Objective:To compare the effects of glenosphere offset positions on the impingement-free range of motion (ROM) in reverse total shoulder arthroplasty (RTSA).Methods:Shoulder joint models were reconstructed using shoulder CT scans of 6 patients with primary osteoarthritis. RTSA was performed virtually according to standard surgical procedures, and shoulder movements were simulated. Reverse shoulder models were constructed with 2 lateral offsets (0 and 4 mm) and 6 positional offsets (center, inferior, posterior, anterior, anterior-inferior, and posterior-inferior). The impingement-free ROM and impingement sites for abduction-adduction, flexion-extension, total rotation (sum of internal and external rotation), and total ROM (sum of ROM in all movement modes) were evaluated.Results:All the 12 combinations of different glenosphere offsets achieved 50% of the original shoulder ROM in all movements. In the abduction-adduction motion with 0 and 4 mm lateral offsets, the anterior-inferior offset provided the largest ROM (94.4°±8.7° and 105.3°±6.9°, respectively), but there was no significant difference between the positions ( P>0.05). In the flexion-extension motion with 0 and 4 mm lateral offsets, the posterior-inferior offset showed the largest ROM (194.1°±6.9° and 196.9°±9.7°, respectively), but there was no significant difference between the positions ( P>0.05). In the total rotation motion with 0 and 4 mm lateral offsets, the anterior-inferior offset had the largest ROM (141.5°±5.9° and 160.6°±8.5°, respectively), showing significant advantages over the center, anterior, and posterior offsets ( P<0.05), but insignificant advantages over the inferior and posterior-inferior offsets ( P>0.05). In total ROM, the anterior-inferior offset provided the largest ROM. When the lateral offset was 0 mm, the anterior-inferior offset provided a ROM of 421.8°±16.4°, showing significant advantages over the center and posterior offsets ( P<0.05). Compared with the lateral glenosphere offset of 0 mm, the lateral glenosphere offset of 4 mm significantly improved total shoulder ROM (122.8°±10.6° versus 145.8°±4.8°) and total ROM (390.9°±11.6° versus 428.4°±19.8°) ( P<0.05). Conclusions:The anterior-inferior, inferior, and posterior-inferior glenosphere offsets can improve ROM in all movement patterns. The position and lateral offset of the glenosphere significantly affect the total rotation and total ROM of the shoulder joint. Specifically, the anterior-inferior and inferior offsets show significant advantages over the center position in total rotation and total ROM of the shoulder joint.

Objective To investigate the effect of early nerve interventional embolization after ruptured intracranial aneurysm(IA)and its effect on nerve function.Methods A total of 100 patients with ruptured IA who underwent neurointerventional embolization in our hospital from January 2020 to January 2023 were selected and divided into two groups according to the timing of surgery.The control group(n=49)underwent surgery 24-72 hours after rupture of 1A,while the study group(n=51)underwent surgery within 24 hours after rupture of IA.The success rate of embolization,serum inflammatory stress factor[interleukin-6(IL-6),tumor necrosis factor-α(TNF-α),D-dimer(D-D),malondialdehyde(MDA)],cerebrovascular spasticity(CVS)related factors[hypoxia-inducing factor 1α(HIF-1α)],soluble intercellular adhesion molecule-1(SICAM-1),cysteine aspartate proteolytic enzyme 3(Caspase-3),neurological function(NIHSS score),capacity of daily living(BI score),complications(cerebral vasospasm)and short-term prognosis were compared between the two groups.Results The success rate of embolization in the study group was 94.12％,which was higher than that in the control group(79.59％)(P＜0.05).The serum IL-6 levels in the study group on day 1,3,and 7 after surgery were(18.06±5.11)ng/L,(17.15±4.60)ng/L,and(16.37±4.35)ng/L,respectively,while those in the control group were(23.18±5.92)ng/L,(21.23±5.54)ng/L,and(20.16±5.29)ng/L,respectively,the TNF-α levels were(32.01±7.19)ng/ml,(30.67±6.85)ng/ml,and(29.45±6.63)ng/ml,respectively,while those in the control group were(39.01±8.20)ng/ml,(36.22±7.53)ng/ml,and(35.01±7.12)ng/ml,respectively,the D-D levels were(27.19±4.89)μg/ml,(26.20±4.71)μg/ml,and(25.81±4.39)μ g/ml,respectively,while those in the control group were(32.06±5.94)μg/ml,(31.18±5.49)μg/ml,and(30.26±5.61)μg/ml,respectively,the MDA levels were(2.81±0.83)μmol/ml,(2.53±0.75)μmol/ml,and(2.46±0.71)μmol/ml,respectively,while those in the control group were(4.02±1.01)μmol/ml,(3.84±0.91)μmol/ml,and(3.59±0.86)μmol/ml,respectively,and the differences between the two groups were statistically significant(P＜0.05);on postoperative day 1,3,and 7,the serum HIF-1α levels in the study group were(95.16±8.21)pg/ml,(93.25±7.94)pg/ml,and(92.54±7.80)pg/ml,respectively,while those in the control group were(102.31±8.56)pg/ml,(100.27±8.19)pg/ml,and(99.65±7.92)pg/ml,respectively,the SICAM-1 levels were(620.15±78.92)ng/ml,(616.37±75.28)ng/ml,and(610.92±73.69)ng/ml,respectively,while those in the control group were(683.19±80.24)ng/ml,(680.24±78.51)ng/ml,and(675.31±75.92)ng/ml,respectively,the caspase-3 levels were(645.13±88.61)mg/ml,(640.21±85.76)mg/ml,and(633.79±82.65)mg/ml,respectively,while those in the control group were(720.13±90.54)mg/ml,(717.03±88.65)mg/ml,and(712.81±85.04)mg/ml,respectively,and there were significant differences between the two groups(P＜0.05);the NIHSS scores of the study group at 1 month and 3 months after surgery were(5.20±1.37)scores and(5.03±1.32)scores,respectively,while those of the control group were(6.31±1.50)scores and(6.17±1.45)scores,respectively,the BI scores were(78.01±5.73)scores and(79.12±5.81)scores,respectively,while those of the control group were(72.69±5.50)scores and(73.24±5.72)scores,respectively,and the difference between the two groups was statistically significant(P＜0.05).The incidence of complications in the study group was 7.84％,which was lower than that of the control group(22.45％)(P＜0.05).The good prognosis rate in the study group was 82.35％,which was higher than that of the control group(61.22％)(P＜0.05).Conclusion Neurological intervention and embolization within 24 hours after rupture of IA has significant therapeutic effects and can more effectively improve patients'neurological function and prognosis.

Objective:To study the clinical efficacy of modified open elbow arthrolysis in the treatment of traumatic elbow stiffness.Methods:A retrospective analysis was performed on 120 patients who underwent modified open elbow arthrolysis in Beijing Jishuitan Hospital from January 2018 to December 2020. The age of the included patients was (37.7±12.4) years (ranged 18-64 years), including 54 males and 66 females. The medical records were reviewed, the range of motion (ROM) and functional status of the patients before operation and at the last follow-up were compared including visual analogue scale (VAS), Mayo elbow performance score (MEPS), Disabilities of the arm, shoulder and hand (DASH) score. Complications and secondary operations were also recorded. Measurement data with normal distribution were presented as mean ± standard deviation( ± s) and comparison between groups was conducted using the t-test; Measurement data of skewed distribution were expressed as M ( Q1, Q3), and Rank-sum test was used for inter-group comparison. Results:The preoperative extension of 120 patients was 43.6° (33.8°, 60.1°), the flexion was 78.7° (59.8°, 98.1°), and the flexion-extension ROM was 25.6° (0.0°, 54.5°); the preoperative pronation was 51.8° (33.0°, 67.0°), the supination was 85.1° (65.7°, 90.0°), and the rotation ROM was 136.9° (99.1°, 157.5°). Postoperative extension was 14.2° (7.0°, 24.8°), flexion was 129.5° (120.0°, 138.1°), flexion-extension ROM was 115.5° (94.4°, 127.3°); postoperative pronation was 65.0° (47.1°, 75.0°), the supination was 88.3° (78.6°, 90.0°), and the rotation ROM was 151.9° (131.7°, 163.4°). Postoperative extension, flexion, flexion-extension ROM, pronation, supination, and rotation ROM were all higher than those before operation, and the differences were statistically significant ( P<0.001). The VAS of 120 patients was 1.0 (0.0, 3.0) scores before operation and 0.0 (0.0, 1.0) scores after operation. The MEPS was 60.0 (50.0, 75.0) scores before operation and 100.0 (85.0, 100.0) scores after operation. The preoperative DASH was 37.5 (20.1, 51.3) scores, and the postoperative DASH was 7.9 (3.3, 13.3) scores. The postoperative VAS, MEPS, and DASH were significantly improved compared with those before operation, and the differences were statistically significant ( P<0.001). Residual ulnar nerve symptoms occurred in 18 cases, recurrence of heterotopic ossification in 42 cases, and hematoma in 3 cases. Conclusions:Modified open elbow arthrolysis is a safe and effective surgical method for the treatment of traumatic elbow stiffness. It can significantly improve the function of the patient, reduce the occurrence of elbow instability, avoid the use of external fixators, and reduce the cost of the patient.

Objective:To analyze the compliance with enhanced recovery after surgery (ERAS) protocol in geriatric patients with fresh fracture.Methods:A retrospective study was conducted on the data of the patients with fresh extremity fracture which had been included in the ERAS perioperative protocol database during May 2019 and January 2022 at Department of Orthopaedic Trauma, Beijing Jishuitan Hospital. The patients ≥65 years were selected as a study group which was matched by a control group of the patients < 65 years in sex, fracture type and date frame of hospitalization at a ratio of 1∶1. The 2 groups were compared in the compliance with the 14 ERAS core perioperative elements.Results:The study group and the control group each included 66 patients who were matched in sex and fracture type. 62.1% (41/66) of the patients in the study group had combined diseases, significantly more than that [16.7% (11/66)] in the control group( P<0.001). Altogether, the compliance with the 14 ERAS core perioperative elements was 78.6 (71.4, 85.7) % in both groups, showing no significant difference between them ( P>0.05). Respectively, the compliance with the postoperative oral intake in the study group (80.3%, 53/66) was significantly lower than that in the control group (92.4%, 61/66) ( P<0.05); the compliance with the other 13 elements showed no statistically significant difference between the 2 groups ( P>0.05). Conclusion:The ERAS perioperative protocol can be carried out smoothly in geriatric patients with fresh fracture whose compliance may be comparable to that of the none-elderly patients.

Objective:To investigate the efficacy of TiRobot navigation for hinged external fixation in elbow arthrolysis.Methods:The 11 patients were retrospectively analyzed who had been treated by elbow arthrolysis at Department of Traumatology and Orthopedics, Beijing Jishuitan Hospital using TiRobot navigation for hinged external fixation. There were 9 males and 2 females with a mean age of 39.3 years (from 21 to 66 years). Their elbow range of motion (ROM) was compared between preoperation and the final follow-up. Their visual analogue scale (VAS) and Mayo elbow performance score (MEPS) and complications were documented at the final follow-up.Results:The rotation axis of the elbow joint was positioned with the aid of intraoperative robot navigation in 11 patients.The deviation of entry point averaged 0.21 mm (from 0.05 to 0.41 mm) and the deviation of exit point 0.23 mm (from 0.06 to 0.38 mm). The follow-up time for the 11 patients averaged 25.8 months (from 16 to 32 months). Their elbow flexion and extension was 133.0° (134.9°, 138.7°) and rotation 164.6° ±17.5° at the final follow-up, significantly improved compared with their preoperative values [0.8°(0°, 33.7°) and 122.9°±49.0°] ( P<0.05). Their VAS averaged 0.2 (from 0 to 1) and MEPS 96.8 (from 85 to 100) at the final follow-up, giving 9 excellent and 2 good cases. There was no case of radial nerve injury, pin instability, pin breakage, pin infection or peri-pin fracture. Conclusion:When TiRobot navigation is used for hinged external fixation in elbow arthrolysis, the axis of rotation can be accurately located, leading to satisfactory functional outcomes for the patients.

Objective:To study the locational distribution characteristics of the heterotopic ossification (HO) following traumatic elbow stiffness and the risk factors for HO development at different locations.Methods:Consecutively included according to our inclusion criteria in the present study were the patients who had been admitted to Department of Orthopaedic Trauma, Beijing Jishuitan Hospital from January 2018 to December 2018 for elbow release due to traumatic elbow stiffness but developed postoperative HO. Their baseline data and CT data were collected and processed using Mimics 20.0. The HO distribution for each patient was characterized at the anteromedial, anterolateral, posteromedial, posterolateral, posterior, medial, lateral, and proximal radioulnar locations. The patient's original injury was categorized into 5 types: distal humerus fracture, olecranon fracture, radial head fracture, coronoid fracture, and elbow dislocation. After the univariate analysis with the HO occurrence at a specific location as the dependent variable and the original injury and baseline data as the independent variables, the factors with P value less than 0.1 were included in the logistic regression analysis to determine the risk factors for HO at each location.Results:A total of 91 patients were included in this study. Of them, 88 had posteromedial HO (96.7%, 88/91), 62 posterior HO (68.1%, 62/91), 60 posterolateral HO (65.9%, 60/91), 41 anteromedial HO (45.1%, 41/91), 26 anterolateral HO (28.6%, 26/91), 13 proximal radioulnar HO (14.3%, 13/91), 8 lateral HO (8.8%, 8/91), and 7 medial HO (7.7%, 7/91). Logistic regression analysis showed that presence of ulnar nerve symptoms ( OR=4.354, P=0.017) and presence of original elbow dislocation ( OR=2.927, P=0.042) were the independent risk factors for the anteromedial HO development and that presence of original olecranon fracture ( OR=0.277, P=0.023) was the protective factor for the anteromedial HO development. Presence of original radial head fracture was the independent risk factor for the anterolateral HO development ( OR=2.891, P=0.033) and the posterolateral HO development ( OR=3.123, P=0.043). Conclusions:HO development in patients with post-traumatic elbow stiffness is closely related to their original injury. Posteromedial HO may develop in almost all the patients. Patients with ulnar nerve symptoms and original elbow dislocation are more prone to anteromedial HO development, but patients with original olecranon fracture are less likely to develop anteromedial HO. Patients with original radial head fracture are more likely to develop anterolateral and posterolateral HO.

Objective:To compare the outcomes between hook thin plate compression technique and conventional screw-plate fixation in the treatment of adolescent tibial tubercle avulsion fractures.Methods:A retrospective analysis was performed of the 43 adolescent patients with tibial tubercle avulsion fracture who had been treated at Department of Orthopedics and Traumatology, Beijing Jishuitan Hospital from January 2018 to October 2020. There were 42 males and one female, aged from 13 to 17 years. According to their treatment methods, they were divided into an observation group (9 cases) treated with hook thin plate compression technique and a control group (34 cases) treated with fixation with cannulated screws alone or in addition with a 1/3 tube plate. The maximum range of knee flexion, B?stman score, and cases returning to school at one month after operation, as well as fracture union time, B?stman score and cases with complications at the last follow-up were compared between the 2 groups.Results:There were no significant differences in the preoperative general data between the 2 groups, showing comparability ( P>0.05). By the postoperative one month, the maximum range of knee flexion [90.0° (85.0°, 102.5°)], B?stman score [21.0 (18.5, 21.0)] and cases returning to school (7) in the observation group were significantly better than those in the control group [22.5° (15.0°, 30.0°), 11.0 (10.0, 13.0), and 0] ( P<0.001). The last follow-up revealed no significant differences between the 2 groups in frature union time [(2.7±0.5) months versus (2.8±0.5) months], B?stman score [30.0 (30.0, 30.0) versus 30.0 (30.0, 30.0), 30.0)] or cases with complications (1 versus 2) ( P>0.05). Conclusion:In the treatment of adolescent tibial tubercle avulsion fractures, compared with conventional fixation with cannulated screws alone or in addition with a 1/3 tube plate, hook thin plate compression technique may lead to better outcomes, because it allows early rehabilitation to shorten the postoperative immobilization time and promote early functional recovery.

Objective:To explore the characteristics and clinical values of preoperative imaging signs and intraoperative stress test in the surgery of the Weber type B fracture without medial malleolar fracture.Methods:The data of 52 patients were reviewed who had been treated at Orthopaedic Trauma Department, Beijing Jishuitan Hospital for Weber type B ankle fracture without medial malleolar fracture from January 2018 to December 2021.They were assigned into 2 groups depending on their results of intraoperative stress test. In the positive group of 21 cases showing a positive intraoperative stress test, there were 19 males and 2 females with an age of (34.4±10.2) years; in the negative group of 31 cases showing a negative intra operative stress test, there were 22 males and 9 females with an age of (39.5±14.8) years. The 2 groups were compared in terms of the medial clear space, tibiofibular clear space and vertical length of the fibular fracture on the preoperative X-ray film, as well as the relative size of the posterior malleolar fracture fragment on the preoperative CT. The imaging characteristics of intraoperative stress tests were also observed.Results:There was no significant difference between the 2 groups in the preoperative general data, showing comparability between groups ( P>0.05). The medial clear space (7.2±2.5) mm and the vertical length of the fibular fracture [49.2 (33.7, 58.7) mm] in the positive group were significantly larger than those in the negative group [(4.5±1.7) mm and 29.6 (24.7, 36.0) mm] ( P<0.05). There was no significant difference between the 2 groups in the lower tibiofibular space [(6.0±1.9) mm versus (5.2 ± 1.4) mm] or in the relative size of posterior malleolar fracture measured by CT [15.8% (6.9%, 19.1%) versus 12.7% (0%, 18.9%)] ( P>0.05). The intraoperative stress test imaging data of a total of 22 cases were collected from the 2 groups (11 cases from each of the 2 groups). During the stress test, only the medial clear space was widened with no widening of the inferior tibiofibular space was found in 7 cases (5 cases in the positive group and 2 cases in the negative group). Conclusions:A routine stress test is recommended for Weber B ankle fracture without medial malleolus fracture, because instability sometimes exists after fibular fixation. Patients with a wider medial clear space and a longer fibular fracture line on X-ray after injury are more likely to be afflicted by instability after fibular fixation. In the patients with a widened medial clear space but without a widened inferior tibiofibular clear space during an intraoperative stress test, it calls for further study whether it is necessary to fix the inferior tibiofibular joint.

Objective:To compare the clinical outcomes between OTA/AO-C open and closed fractures of the distal humerus treated by open reduction and internal fixation.Methods:The clinical data were retrospectively analyzed of the 70 patients who had been treated at Department of Traumatology and Orthopedics, Beijing Jishuitan Hospital for OTA/AO-C fractures of the distal humerus from January 2014 to June 2017. Of them, 22 suffered from open fractures (Gustilo types Ⅰ/Ⅱ) and 48 closed fractures. There were 18 males and 4 females with an age of (42.6±13.0) years in the open group and 21 males and 27 females with an age of (42.2±17.1) years in the closed group. Analyzed were interval from injury to surgery, hospitalization time, injury energy and functional outcomes which included range of motion (ROM) in elbow flexion and extension, ROM in elbow rotation, Mayo elbow performance score (MEPS), Disabilities of the Arm, Shoulder and Hand (DASH), complications and rate of secondary surgery.Results:There was no significant difference between the 2 groups in age, injury energy or interval from injury to surgery ( P>0.05), but there were significantly more males in the open group than in the closed group ( P=0.011). The follow-up time for all the patients averaged 34.0 months (from 25 to 54 months). There were no statistically significant differences between the 2 groups in hospitalization time [9.5(6.0, 13.0) d versus 8.5 (6.0, 11.0) d], ROM in flexion and extension [120.0° (100.0°, 137.8°) versus 128.5° (110.0°, 140.0°)], ROM in rotation [155.0° (151.3°, 155.0°) versus 155.0° (155.0°, 155.0°)], MEPS [95.0 (80.0, 100.0) versus 95.0 (80.0, 100.0)] or DASH [2.6 (0.63, 9.2) versus 1.7 (0.0, 8.5)] ( P>0.05). There were no statistically significant differences between the 2 groups either in rate of secondary surgery [36.4% (8/22) versus 33.3% (16/48)], ulnar nerve symptoms [54.5% (12/22) versus 60.4% (29/48)], local irritability in the region of internal fixation [9.1% (2/22) versus 6.3% (3/48)] or elbow stiffness [13.6% (3/22) versus 10.4% (5/48)] ( P>0.05). Conclusion:Open reduction and internal fixation can lead to similar clinical outcomes in the treatment of both open (Gustilo types Ⅰ/Ⅱ) and closed distal humeral fractures of OTA/AO-C, with no significant differences in postoperative ROM, functional scores or complications.

Objective:To compare two different methods for the harvest of the costal cartilage cortical slice with perichondrium preserved for rhinoplasty patients, and to explore a simple and less invasive method for the costal cartilage cortical slice.Methods:From September 2019 to December 2020, the rhinoplasty patients using the techniques of nasal tip "double arch" stent combined with prosthesis were selected in Shanghai Time Plastic Surgery Hospital, they were randomly divided into observation group and control group. In the observation group, only the cortical slice of costal cartilage with perichondrium was cut and the continuity of costal cartilage was preserved. While in the control group, with the superficial perichondrium preserved, the whole costal cartilage was dissected first, and then pruned it and harvested the cortical slice of costal cartilage with perichondrium. The operation were performed by the same clinicians in both groups. Different variables were compared between the two groups, including the operation time, intraoperative blood loss, length of incision, the degree of chest pain after postoperative 6, 24, 72 h, 1 week, the incidence of intraoperative complications and so on. The severity of chest pain was assessed by visual analogue scale (VAS). The measurement data of the two groups were analyzed by t-test, and the enumeration data were analyzed by χ2 test. Results:For both observation group and the control group, 61 patients were included. In the observation group, there were 3 males (4.9%) and 58 females (95.1%), aged (28.6±5.4) years old, and BMI (21.76±1.65) kg/m 2. In the control group, there were 2 males (3.3%) and 59 females (96.7%), aged (45.8±5.7) years old, and BMI (22.25±1.47) kg/m 2. There were no significant differences in gender composition, age and BMI between the two groups ( P>0.05). The double arch stent of nasal tip could be made by the costal cartilage cortical slices obtained in the two groups. In the control group, two cases of pleural rupture occurred and their prognosis was good after effective treatment, with no complications such as hematoma, infection or pleural injury. In the observation group, there were no complications such as hematoma, infection or pleural injury. The operation time, incision length and intraoperative blood loss in the observation group were significantly lower than those in the control group [(18.54±3.62) min vs. (25.75±3.75) min; (1.68±0.26) cm vs. (2.16±0.32) cm; (16.79±7.86) ml vs. (25.46±8.49) ml; P<0.05]. The VAS score in the observation group was lower than that in the control group after postoperative 6, 24, 72 h, 1 week [(2.76±0.62) vs. (3.87±0.68)scores; (2.37±0.45) vs. (3.12±0.55) scores; (1.76±0.45) vs. (2.57±0.53) scores; (1.17±0.44) vs. (1.85±0.51) scores; P<0.05]. Conclusions:Compared with the conventional method of whole costal cartilage harvest, the method of harvesting the costal cartilaginous cortical slice with the costal perichondrium preserved and preserving the continuity of the costal cartilage can reduce the trauma and bleeding, shorten the operation time, simplify the operation process, and significantly reduce the postoperative chest pain.