1.Research progress on valgus impacted proximal humeral fractures.
Bo LI ; Shimin CHANG ; Sunjun HU ; Shouchao DU ; Wenfeng XIONG
Chinese Journal of Reparative and Reconstructive Surgery 2024;38(1):107-112
		                        		
		                        			OBJECTIVE:
		                        			To review the advancement made in the understanding of valgus impacted proximal humeral fracture (PHF).
		                        		
		                        			METHODS:
		                        			The domestic and foreign literature about the valgus impacted PHF was extensively reviewed and the definition, classification, pathological features, and treatment of valgus impacted PHFs were summarized.
		                        		
		                        			RESULTS:
		                        			PHF with a neck shaft angle ≥160° is recognized as a valgus impacted PHF characterized by the preservation of the medial epiphyseal region of the humeral head, which contributes to maintenance of the medial periosteum's integrity after fracture and reduces the occurrence of avascular necrosis. Therefore, the valgus impacted PHF has a better prognosis when compared to other complex PHFs. The Neer classification designates it as a three- or four-part fracture, while the AO/Association for the Study of Internal Fixation (AO/ASIF) categorizes it as type C (C1.1). In the management of the valgus impacted PHF, the selection between conservative and surgical approaches is contingent upon the patient's age and the extent of fracture displacement. While conservative treatment offers the advantage of being non-invasive, it is accompanied by limitations such as the inability to achieve anatomical reduction and the potential for multiple complications. Surgical treatment includes open reduction combined with steel wire or locking plate and/or non-absorbable suture, transosseous suture technology, and shoulder replacement. Surgeons must adopt personalized treatment strategies for each patient with a valgus impacted PHF. Minimally invasive surgery helps to preserve blood supply to the humeral head, mitigate the likelihood of avascular necrosis, and reduce postoperative complications of bone and soft tissue. For elderly patients with severe comminuted and displaced fractures, osteoporosis, and unsuitable internal fixation, shoulder joint replacement is the best treatment option.
		                        		
		                        			CONCLUSION
		                        			Currently, there has been some advancement in the classification, vascular supply, and management of valgus impacted PHF. Nevertheless, further research is imperative to assess the clinical safety, biomechanical stability, and indication of minimally invasive technology.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Bone Plates
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Fracture Fixation, Internal/adverse effects*
		                        			;
		                        		
		                        			Fractures, Comminuted/surgery*
		                        			;
		                        		
		                        			Humeral Fractures
		                        			;
		                        		
		                        			Osteonecrosis
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Shoulder Fractures/surgery*
		                        			;
		                        		
		                        			Treatment Outcome
		                        			
		                        		
		                        	
2.Application of absorbable anchor combined with Kirschner wire in reconstruction of extension function of old mallet finger.
Dongdong CHENG ; Zhengbing ZHOU ; Zixuan LIN ; Hui LIU ; Fan YANG ; Jin WANG ; Shang GUO
Chinese Journal of Reparative and Reconstructive Surgery 2023;37(4):443-446
		                        		
		                        			OBJECTIVE:
		                        			To investigate the feasibility and effectiveness of absorbable anchor combined with Kirschner wire fixation in the reconstruction of extension function of old mallet finger.
		                        		
		                        			METHODS:
		                        			Between January 2020 and January 2022, 23 cases of old mallet fingers were treated. There were 17 males and 6 females with an average age of 42 years (range, 18-70 years). The cause of injury included sports impact injury in 12 cases, sprain in 9 cases, and previous cut injury in 2 cases. The affected finger included index finger in 4 cases, middle finger in 5 cases, ring finger in 9 cases, and little finger in 5 cases. There were 18 patients of tendinous mallet fingers (Doyle type Ⅰ), 5 patients were only small bone fragments avulsion (Wehbe type ⅠA). The time from injury to operation was 45-120 days, with an average of 67 days. The patients were treated with Kirschner wire to fix the distal interphalangeal joint in a mild back extension position after joint release. The insertion of extensor tendon was reconstructed and fixed with absorbable anchors. After 6 weeks, the Kirschner wire was removed, and the patients started joint flexion and extension training.
		                        		
		                        			RESULTS:
		                        			The postoperative follow-up ranged from 4 to 24 months (mean, 9 months). The wounds healed by first intention without complications such as skin necrosis, wound infection, and nail deformity. The distal interphalangeal joint was not stiff, the joint space was good, and there was no complication such as pain and osteoarthritis. At last follow-up, according to Crawford function evaluation standard, 12 cases were excellent, 9 cases were good, 2 cases were fair, and the good and excellent rate was 91.3%.
		                        		
		                        			CONCLUSION
		                        			Absorbable anchor combined with Kirschner wire fixation can be used to reconstruct the extension function of old mallet finger, which has the advantages of simple operation and less complications.
		                        		
		                        		
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Fracture Fixation, Internal
		                        			;
		                        		
		                        			Finger Injuries/surgery*
		                        			;
		                        		
		                        			Fractures, Bone/surgery*
		                        			;
		                        		
		                        			Tendon Injuries/surgery*
		                        			;
		                        		
		                        			Fingers
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Finger Joint/surgery*
		                        			
		                        		
		                        	
3.Short-term effectiveness of transverse antecubital incision for failed closed reduction of Gartland type Ⅲ supracondylar humerus fractures in children.
Yinshuan DENG ; Jing BAI ; Rui LIU ; Zhaoming DA ; Weishun YAN ; Zhen CHEN ; Shuo LI ; Tao QU ; Weimin NIU ; Binbin GUO ; Zhiyun YANG ; Guohai LI ; Guoxin NAN
Chinese Journal of Reparative and Reconstructive Surgery 2023;37(5):566-571
		                        		
		                        			OBJECTIVE:
		                        			To investigate the short-term effectiveness of transverse antecubital incision in the treatment of failed closed reduction of Gartland type Ⅲ supracondylar humeral fractures (SHFs) in children.
		                        		
		                        			METHODS:
		                        			Between July 2020 and April 2022, 20 children with Gartland type Ⅲ SHFs who failed in closed reduction were treated with internal and external condylar crossing Kirschner wire fixation through transverse antecubital incision. There were 9 boys and 11 girls with an average age of 3.1 years (range, 1.1-6.0 years). The causes of injuries were fall in 12 cases and fall from height in 8 cases. The time from admission to operation ranged from 7 to 18 hours, with an average of 12.4 hours. The healing of the incision and the occurrence of complications such as nerve injury and cubitus varus were observed after operation; the elbow flexion and extension range of motion after removing the gypsum, after removing the Kirschner wire, and at last follow-up were recorded and compared, as well as the elbow flexion and extension and forearm rotation range of motion at last follow-up between healthy and affected sides; the Baumann angle was measured on the X-ray film, and the fracture healing was observed. At last follow-up, the effectiveness was evaluated according to the Flynn elbow function evaluation criteria.
		                        		
		                        			RESULTS:
		                        			All incisions healed by first intention, and there was no skin necrosis, scar contracture, ulnar nerve injury, and cubitus varus. Postoperative pain occurred in the radial-dorsal thumb in 2 cases. The gypsum was removed and elbow flexion and extension exercises were started at 2-4 weeks (mean, 2.7 weeks) after operation, and the Kirschner wire was removed at 4-5 weeks (mean, 4.3 weeks). All the 20 patients were followed up 6-16 months, with an average of 12.4 months. The fracture healing time was 4-5 weeks, with an average of 4.5 weeks, and there was no complication such as delayed healing and myositis ossificans. The flexion and extension range of motion of the elbow joint gradually improved after operation, and there were significant differences between the time after removing the gypsum, after removing the Kirschner wire, and at last follow-up ( P<0.017). There was no significant difference in the flexion and extension of the elbow joint and the forearm rotation range of motion between the healthy and affected sides at last follow-up ( P>0.05). There was no significant difference in Baumann angle between the time of immediate after operation, after removing the Kirschner wire, and at last follow-up ( P>0.05). According to Flynn elbow function evaluation standard, 16 cases were excellent and 4 cases were good, the excellent and good rate was 100%.
		                        		
		                        			CONCLUSION
		                        			The treatment of Gartland type Ⅲ SHFs in children with failed closed reduction by internal and external condylar crossing Kirschner wire fixation through transverse antecubital incision has the advantages of complete soft tissue hinge behind the fracture for easy reduction and wire fixation, small incision, less complications, fast fracture healing, early functional recovery, reliable reduction and fixation, and can obtain satisfactory results.
		                        		
		                        		
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Child
		                        			;
		                        		
		                        			Child, Preschool
		                        			;
		                        		
		                        			Calcium Sulfate
		                        			;
		                        		
		                        			Humerus
		                        			;
		                        		
		                        			Humeral Fractures/surgery*
		                        			;
		                        		
		                        			Plastic Surgery Procedures
		                        			;
		                        		
		                        			Fracture Fixation, Internal/methods*
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Fracture Healing
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Range of Motion, Articular
		                        			
		                        		
		                        	
4.Effectiveness of suture anchor fixation combined with Nice knot strapping via longitudinal patellar drilling in treatment of patellar inferior pole fracture.
Xin ZHANG ; Jianmin YUAN ; Guozheng DING ; Nengfeng MA ; Wenjing CHENG
Chinese Journal of Reparative and Reconstructive Surgery 2023;37(6):675-680
		                        		
		                        			OBJECTIVE:
		                        			To investigate effectiveness of suture anchor fixation combined with Nice knot strapping via longitudinal patellar drilling in the treatment of patellar inferior pole fractures.
		                        		
		                        			METHODS:
		                        			A clinical data of 37 patients with unilateral patellar inferior pole fracture who met the selection criteria between June 2017 and June 2021 was retrospectively analyzed. Among them, 17 cases were treated with the suture anchor fixation combined with Nice knot strapping via longitudinal patellar drilling (group A), and 20 cases were treated with the traditional Kirschner wire tension band technique (group B). There was no significant difference in terms of gender, age, body mass index, fracture side, combined medical disease, and preoperative hemoglobin between the two groups ( P>0.05). Operation time, intraoperative blood loss, postoperative complications, fracture healing time, knee range of motion, and knee function Bostman score (range of motion, pain, daily work, muscle atrophy, walking aids, knee effusion, soft leg, and stair climbing) and grading were recorded in both groups at last follow-up.
		                        		
		                        			RESULTS:
		                        			There was no significant difference in operation time and intraoperative blood loss between the two groups ( P>0.05). All incisions healed by first intention. All patients were followed up 1-2 years, with an average of 1.7 years. X-ray films reexamination showed that all fractures in group A healed, while 2 cases in group B did not heal. There was no significant difference in bone healing time between the two groups ( P>0.05). At last follow-up, the knee range of motion, the range of motion score of Bostman score, total score and effectiveness grading in group A were significantly better than those in group B ( P<0.05). There was no significant difference in the other items of Bostman scores between the two groups ( P>0.05). During follow-up, 2 cases of internal fixation failure and 1 case of internal fixator irritation occurred in group B, and no complication related to internal fixation occurred in group A. The occurrence of complications was significantly lower in group A than in group B ( P<0.05).
		                        		
		                        			CONCLUSION
		                        			Compared with the traditional Kirschner wire tension band technique, the suture anchor combined with Nice knot strapping via longitudinal patellar drilling for the patellar inferior pole fractures has the advantages of simple operation, reliable fixation, early flexion and extension activity, and better functional recovery of knee joint.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Blood Loss, Surgical
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Fracture Fixation, Internal/methods*
		                        			;
		                        		
		                        			Fractures, Bone/surgery*
		                        			;
		                        		
		                        			Knee Injuries
		                        			;
		                        		
		                        			Patella/surgery*
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Suture Anchors
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			
		                        		
		                        	
5.Efficacy of micro steel plate and Kirschner needle oblique and transverse internal fixation of adjacent metacarpal bone in the treatment of metacarpal diaphyseal oblique fracture.
Li-Qi SHI ; Yang-Hua TANG ; Xiang-Jun LI ; Jun ZHAO ; Jie LIU
China Journal of Orthopaedics and Traumatology 2023;36(5):440-444
		                        		
		                        			OBJECTIVE:
		                        			To compare the clinical efficacy of micro steel plate and Kirschner needle oblique and transverse internal fixation of adjacent metacarpal bone in the treatment of metacarpal diaphyseal oblique fracture.
		                        		
		                        			METHODS:
		                        			Fifty-nine patients with metacarpal diaphyseal oblique fractures admitted between January 2018 and September 2021 were selected as the study subjects and divided into the observation group (29 cases) and the control group (30 cases) based on different internal fixation methods. The observation group was treated with Kirschner wire oblique and transverse internal fixation of adjacent metacarpal bones, while the control group was treated with micro steel plate internal fixation. Postoperative complications, operation time, incision length, fracture healing time, treatment cost, and metacarpophalangeal function were compared between the two groups.
		                        		
		                        			RESULTS:
		                        			No incision or Kirschner wire infections occurred in the 59 patients, except for one in the observation group. No fixation loosening, rupture, or loss of fracture reduction occurred in any of the patients. The operation time and incision length in the observation group were (20.5±4.2) min and (1.6±0.2) cm, respectively, which were significantly shorter than those in the control group (30.8±5.6) min and (4.3±0.8) cm (P<0.05). The treatment cost and fracture healing time in the observation group were (3 804.5±300.8) yuan and (7.2±1.1) weeks, respectively, which were significantly lower than those in the control group (9 906.9±860.6) yuan and (9.3±1.7) weeks (P<0.05). The excellent and good rate of metacarpophalangeal joint function in the observation group was significantly higher than that in the control group at 1, 2, and 3 months after operation (P<0.05), but there was no significant difference between the two groups at 6 months after operation (P>0.05).
		                        		
		                        			CONCLUSION
		                        			Micro steel plate internal fixation and Kirschner wire oblique and transverse internal fixation of adjacent metacarpal bones are both viable surgical methods for treating metacarpal diaphyseal oblique fractures. However, the latter has the advantages of causing less surgical trauma, shorter operation time, better fracture healing, lower cost of fixation materials, and no need for secondary incision and removal of internal fixation.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Metacarpal Bones/injuries*
		                        			;
		                        		
		                        			Fractures, Bone/surgery*
		                        			;
		                        		
		                        			Fracture Fixation, Internal/methods*
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Bone Plates
		                        			;
		                        		
		                        			Treatment Outcome
		                        			
		                        		
		                        	
6.Comparison of the efficacy of three types of Kirschner wire tension bands for ulnar olecranal fracture.
Jia-Ru CHEN ; Zhe-Fei MOU ; Jun-Ju ZHENG
China Journal of Orthopaedics and Traumatology 2023;36(7):607-613
		                        		
		                        			OBJECTIVE:
		                        			To compare the clinical effect of three types of Kirschner wire tension band for olecranon fracture.
		                        		
		                        			METHODS:
		                        			The clinical data of 64 patients with olecranon fracture treated by Kirschner wire tension band fixation from March 2016 to May 2020 were retrospectively analyzed. Among them, 19 patients were treated with intramedullary K-wires fixation(group A) including 8 males and 11 females with an average of (48.2±18.3) years old, 3 patients were typeⅠ, and 16 patients were typeⅡ according to Mayo classification;20 patients were treated with transcortical K-wires fixation (group B) including 13 males and 7 females with an average of (43.5±20.4) years old, 3 patients were typeⅠand 17 patients were typeⅡ according to Mayo classification;25 patients were treated with perforated Kirschner wire(group C) including 15 males and 10 females with an average of (55.2±17.5) years old, 4 patients were typeⅠand 21 patients were typeⅡ according to Mayo classification. The operative time, intraoperative blood loss, times of Intraoperative fluoroscopy, fracture healing time and complications of 3 groups were compared. At the final follow-up, elbow function was assessed using the Mayo Elbow Function Scale.
		                        		
		                        			RESULTS:
		                        			There were differences in operative time, intraoperative fluoroscopy times, postoperative VAS and soft tissue irritation among the three groups(P<0.05). The operative time, intraoperative fluoroscopy times in group A and C was better than that in group B. The postoperative VAS score, skin irritability in group C was better than that of group B. The difference was statistically significant on Mayo elbow function score at the final follow-up among three groups(P<0.05), the scores of group A and C were higher than that of group B.
		                        		
		                        			CONCLUSION
		                        			Compared with transcortical K-wires screw fixation, both intramedullary K-wires screw fixation and perforated Kirschner wire fixation, which can significantly reduce the occurrence of soft tissue irritation, reduce surgical complications and shorten the operation time.
		                        		
		                        		
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Young Adult
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Fracture Fixation, Internal
		                        			;
		                        		
		                        			Ulna Fractures/surgery*
		                        			;
		                        		
		                        			Olecranon Process/surgery*
		                        			;
		                        		
		                        			Inflammation
		                        			;
		                        		
		                        			Treatment Outcome
		                        			
		                        		
		                        	
7.Clinical effect of Kirschner wire intramedullary fixation in the treatment of pediatric both-bone forearm fractures at high altitude area.
Dunzhu PUBU ; Pingcuo ZHAXI ; Ouzhu DANZENG ; Sang GE ; Jie LUO ; Duo MEI ; Jun YUAN ; Xin-Jun ZHANG ; Xiao-Gang HUANG ; Lei DAI ; Chao LIU
China Journal of Orthopaedics and Traumatology 2023;36(7):619-622
		                        		
		                        			OBJECTIVE:
		                        			To explore the clinical effect of Kirschner wire intramedullary fixation in the treatment of both-bone forearm fractures in children of high altitude area.
		                        		
		                        			METHODS:
		                        			From August 2020 to December 2021, 19 children were treated with Kirschner wire intramedullary fixation including 11 males and 8 females, aged from 4 to 13 years old with an average of (8.16±2.71) years old. The course of disease was 1 to 10 days, with a mean of (4.11±2.51) d. First, close reduction was performed. If the reduction was unsuccessful, limited open reduction was performed, followed by Kirschner wire intramedullary fixation of the radius and ulna. The fracture healing was evaluated by X-ray after operation, and the curative effect was evaluated by Anderson forearm function score standard.
		                        		
		                        			RESULTS:
		                        			The wound healed well after operation, 2 cases had clinical manifestations of needle tail irritation after operation, and the symptoms disappeared after removing the internal fixation. The average follow-up time was(7.68±3.50) months (3 to 14 months). X-ray showed that all fracture healing in follow-up, Anderson forearm function score showed excellent in 16 cases, good in 2 cases and fair in 1 case at the final follow-up.
		                        		
		                        			CONCLUSION
		                        			Children with fractures in plateau areas often have delayed medical treatment, lack of medical conditions and insufficient compliance. Based on these characteristics, Kirschner wire intramedullary fixation for the treatment of children's double forearm fractures has the advantages of small injury and rapid recovery. It is a kind of operation method that can be popularized.
		                        		
		                        		
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Child
		                        			;
		                        		
		                        			Child, Preschool
		                        			;
		                        		
		                        			Adolescent
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Forearm
		                        			;
		                        		
		                        			Altitude
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Fractures, Bone/surgery*
		                        			;
		                        		
		                        			Fracture Fixation, Internal/methods*
		                        			;
		                        		
		                        			Radius Fractures/surgery*
		                        			;
		                        		
		                        			Fracture Fixation, Intramedullary/methods*
		                        			
		                        		
		                        	
8.PACS and Photoshop assisted isosceles triangle osteotomy and Kirschner wire tension buckle fixation in the treatment of cubitus varus in children.
Chuan-Wei ZHANG ; Xing-Po DING ; Deng-Shan CHEN ; Lei WANG
China Journal of Orthopaedics and Traumatology 2023;36(2):181-184
		                        		
		                        			OBJECTIVE:
		                        			To investigate the clinical efficacy of picture archiving and communication system (PACS) and Photoshop assisted isosceles triangle osteotomy and Kirschner wire fixation with tension band in the treatment of cubitus varus in children.
		                        		
		                        			METHODS:
		                        			The clinic data of 20 children with cubitus varus treated with isosceles triangle osteotomy of distal humerus and Kirschner wire fixation with tension band from October 2014 to October 2019, were retrospectively analyzed. There were 13 males and 7 females, aged from 3.2 to 13.5 years old, the median age was 6.65 years old. PACS system was applied for the osteotomy design preoperatively, simulating and measuring the side length of isosceles triangle osteotomy. Then, Photoshop system was used to simulate the preoperative and postoperative osteotomy graphics, which could guide precise osteotomy during operation.
		                        		
		                        			RESULTS:
		                        			All the 20 patients were followed up for 20 to 24 months, with a median of 22.5 months. At the last follow-up, the carrying angle of the affected limb was 5 ° to 13 °, with a median of 8.3 °. The clinical efficacy was evaluated according to the Flynn elbow function score:excellent in 16 cases, good in 2 cases, and fair in 2 cases.
		                        		
		                        			CONCLUSION
		                        			The treatment of cubitus varus in children by isosceles triangle osteotomy and Kirschner wire fixation with tension band assisted by PACS and Photoshop system has shown good clinical outcome.
		                        		
		                        		
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Child
		                        			;
		                        		
		                        			Child, Preschool
		                        			;
		                        		
		                        			Adolescent
		                        			;
		                        		
		                        			Humeral Fractures/surgery*
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Humerus/surgery*
		                        			;
		                        		
		                        			Treatment Outcome
		                        			;
		                        		
		                        			Elbow Joint/surgery*
		                        			;
		                        		
		                        			Osteotomy
		                        			;
		                        		
		                        			Joint Deformities, Acquired/surgery*
		                        			;
		                        		
		                        			Range of Motion, Articular
		                        			
		                        		
		                        	
9.Double-pulley combined with suture bridge technique for fixation of comminuted fractures of distal patella pole.
China Journal of Orthopaedics and Traumatology 2023;36(3):247-250
		                        		
		                        			OBJECTIVE:
		                        			To investigate the clinical effect of double pulley combined with suture bridge in the treatment of comminuted fracture of the lower pole of the patella.
		                        		
		                        			METHODS:
		                        			From January 2018 to June 2020, 15 patients with comminuted fracture of the lower pole of the patella were treated with double pulley and suture bridge technology, including 9 males and 6 females, aged 28 to 68 years old with an average of (42.4±9.6) years old. All patients had obvious knee joint pain and limited movement after injury. All knee joints were examined by X-ray and CT, which confirmed that they were all comminuted fractures at the lower level of the patella. After operation, X-ray films of the knee joint were taken regularly to understand the fracture healing, the Insall Salvati index was measure, the range of motion of the joint was recorded, and the function of the knee joint was evaluateed by the Bostman scoring system.
		                        		
		                        			RESULTS:
		                        			All the 15 patients were followed up for 7 to 24 months with an average of (11.4±4.2) months, and there was no obvious anterior knee pain. At the last follow-up, the knee joint range of motion of the affected limb was 105° to 140° with an average of (128.5±12.8) °, and the Insall Salvati index was 0.79 to 1.12 with an average of (0.92±0.18). The X-ray film showed that the patella was bone healing, and no anchor fell off, broken, or displaced fracture block was found. Bostman patellar fracture function score was 27.85±2.06, 13 cases were excellent, 2 cases were good.
		                        		
		                        			CONCLUSION
		                        			Double pulley technique combined with suture bridge technique is reliable for reduction and fixation of comminuted fracture of the lower pole of patella, and patients can start functional exercise early after operation.
		                        		
		                        		
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Fractures, Comminuted/surgery*
		                        			;
		                        		
		                        			Fracture Fixation, Internal/methods*
		                        			;
		                        		
		                        			Patella/injuries*
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Fractures, Bone/surgery*
		                        			;
		                        		
		                        			Sutures
		                        			;
		                        		
		                        			Treatment Outcome
		                        			
		                        		
		                        	
10.Comparative study on effectiveness of ultrasound- and arthrography-assisted Kirschner wire fixation in treatment of Jakob type Ⅱ lateral condylar humerus fractures in children.
Xiwei SUN ; Hailong MA ; Fang LIU ; Zhiye GUAN ; Sicheng ZHANG ; Jun SUN
Chinese Journal of Reparative and Reconstructive Surgery 2023;37(8):952-957
		                        		
		                        			OBJECTIVE:
		                        			To compare the effectiveness of ultrasound- and arthrography-assisted Kirschner wire fixation in the treatment of Jakob type Ⅱ lateral condylar humerus fracture (LCHF) in children.
		                        		
		                        			METHODS:
		                        			A clinical data of 101 children with Jakob type Ⅱ LCHF, who met the selection criteria and were admitted between April 2021 and April 2022, was retrospectively analyzed. Of them, 47 cases were treated with ultrasound-assisted Kirschner wire fixation (group A), and 54 cases with arthrography-assisted surgery (group B). There was no significant difference in gender, age, cause of injury, fracture side, and disease duration between groups (P>0.05). Intraoperative fluoroscopy times, operation time, and hospital stay, Flynn elbow joint function score, and postoperative complications were recorded and compared between groups. X-ray examination was performed to observe the healing of fracture, and measure the carrying angle and the shaft-condylar angle (SCA).
		                        		
		                        			RESULTS:
		                        			The success rate of closed reduction was significantly higher in group A than in group B (P<0.05), and the intraoperative fluoroscopy times was significantly less in group A than in group B (P<0.05). There was no significant difference in operation time and hospital stay between groups (P>0.05). All children in both groups were followed up 12-18 months, with an average of 13.6 months. X-ray reexamination showed that the fractures of both groups healed, and the difference in healing time was not significant (P>0.05). At last follow-up, there was no significant difference in carrying angle and SCA between unaffected side and affected side in both groups and between groups A and B in affected side (P>0.05). There was no significant difference in Flynn elbow joint function score between groups (P>0.05). There were 18 cases of lateral spurs formation in group A, 1 case of pinning infection and 26 cases of lateral spurs formation in group B, and there was no significant difference in the incidence of the above complications (P>0.05).
		                        		
		                        			CONCLUSION
		                        			Compared with the arthrography, the ultrasound-assisted Kirschner wire fixation in the treatment of Jakob type Ⅱ LCHF in children can avoid the open reduction and decrease the number of intraoperative fluoroscopy, and obtain the good effectiveness.
		                        		
		                        		
		                        		
		                        			Child
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Arthrography
		                        			;
		                        		
		                        			Bone Wires
		                        			;
		                        		
		                        			Humeral Fractures/surgery*
		                        			;
		                        		
		                        			Humerus
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Female
		                        			
		                        		
		                        	
            
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