Diagnostic Imaging Pediatric bone and joint system was a sub-branch of professional courses.The content was more difficult and learners were not relaxed to master the knowledge alone.It was easy,across time and space,resource sharing and interactive to operate on blackboard teaching platform.We can better accomplish teaching and learning task with pediatric bone and joint diagnostic imaging online course constructed by blackboard platform.

Objective:To compare the conventional percutaneous minimally invasive plate fixation sparing pronator quadratus versus the 3-point positioning percutaneous minimally invasive palmar locking plate fixation sparing pronator quadratus for distal radial fractures.Methods:Between January 2015 and December 2017, 50 patients with distal radius fracture were treated surgically at Department of Orthopaedics, The Second Hospital of Fuzhou by percutaneous minimally invasive plate fixation sparing pronator quadratus. They were 24 males and 26 females, aged from 21 to 71 years. Conventional percutaneous minimally invasive plate fixation was conducted for 25 patients and 3-point positioning minimally invasive plate fixation for the other 25 patients. The 2 groups were compared in terms of fluoroscopic adjustments of the plate under the pronator quadratus, fracture healing time, visual analogue scale (VAS) on days 1, 3 and 7 postoperation, and wrist flexion and extension, forearm rotation and upper limb function by Disabilities of the Arm, Shoulder and Hand(DASH) scores and Gartland-Werley scores at 3 months postoperation.Results:There was no significant difference in the general data between the 2 groups, showing comparability between groups ( P>0.05). The fluoroscopic adjustments of the plate under the pronator quadratus for the conventional group (3.4±0.5) were significantly more than for the 3-point positioning group (1.1±0.3) ( P<0.05). The VAS scores on days 1, 3 and 7 postoperation for the conventional group were significantly higher than for the 3-point positioning group ( P<0.05). At 3 months postoperation, the wrist pronation was respectively 76.6°±1.9° and 82.3°±2.0°, and the Gartland-Werley scores were respectively 3.4±0.5 and 1.9±0.2 for the conventional and 3-point positioning groups, showing significant differences between the 2 groups ( P< 0.05). Conclusions:In the treatment of distal radial fractures, compared with conventional percutaneous minimally invasive plate fixation, the 3-point positioning minimally invasive plate fixation sparing pronator quadratus may minimize the damage to the pronator quadratus, be more minimally invasive, and lead to less early postoperative pain and faster functional recovery.

Objective:To investigate the clinical efficacy of proximal femoral nail anti-rotation (PFNA) assisted by the "3-2-1" surface positioning method in the treatment of femoral subtrochanteric fractures.Methods:A total of 97 patients with subtrochanteric fractures admitted to the Second Hospital of Fuzhou from January 2015 to December 2020 were retrospectively analyzed. They were divided into two groups according to whether the "3-2-1" surface positioning method (3 longitudinal axes, 2 preset incisions, and 1 auxiliary incision) was used. There were 44 patients in the surface positioning group, including 25 males and 19 females, aged 61.59±18.43 years (range, 22-90 years). According to the Seinsheimer classification, there were 13 cases of type II, 11 cases of type III, 6 cases of type IV, and 14 cases of type V. The mechanism of injury was low energy injury in 26 cases and high energy injury in 18 cases. There were 53 patients in the traditional positioning group, including 30 males and 20 females, aged 56.38±17.24 years (range, 24-90 years). According to the Seinsheimer classification, there were 9 cases of type II, 22 cases of type III, 9 cases of type IV, and 13 cases of type V. According to the mechanism of injury, there were 30 cases of low energy injury and 23 cases of high energy injury. The length of incision, operation time, and blood loss were recorded. At 1, 3, 6, and 12 months after operation, the anteroposterior and lateral X-ray films of the hip were taken to evaluate the imaging indicators (neck-shaft angle, anteroposterior and lateral displacement, and angulation), fracture healing, and complications (infection, malunion, loosening and breakage of the internal fixation, and periprosthetic fracture). The Harris hip score and EuroQol five dimensions questionnaire (EQ-5D) were evaluated.Results:All patients successfully completed the operation and were followed up for 15.12±1.54 months (range, 12-18 months). The operation time, incision length, dominant blood loss and hidden blood loss in the surface positioning group were 1.78(1.50, 2.00) h, 8(8, 9) cm, 300(200, 400) ml and 843(629, 1 130) ml, respectively, which were less than 2.10(1.69, 2.38) h, 10(9, 12) cm, 400(300, 500) ml and 1 030(954, 1 266) ml in the traditional positioning group, and the difference was statistically significant ( P<0.05). The neck-shaft angle in the surface positioning group was 135.54°±2.83°, which was larger than 132.33°±3.37° in the traditional positioning group, and the difference was statistically significant ( t=5.02, P<0.001). The anterolateral and lateral displacement and lateral image angle in the surface positioning group were 4.70±1.60 cm, 4.52±1.71 cm and 9.36°±2.94°, respectively, which were lower than 6.14±2.57 cm, 5.98±2.70 cm and 11.46°±4.68° in the traditional positioning group, and the difference was statistically significant ( P<0.05). One year after operation, the Harris hip score and EQ-5D score of the surface positioning group were 92(84, 99) points and 0.90(0.73, 1.00) points, respectively, which were higher than 88(74, 96) points and 0.81(0.72, 0.94) points of the traditional positioning group ( P<0.05). Conclusion:The "3-2-1" surface positioning method assisted PFNA internal fixation in the treatment of femoral subtrochanteric fracture can improve the quality of reduction, reduce intraoperative blood loss, and improve hip function and quality of life.

Objective To explore the compound compatibility regulation of oral traditional Chinese medicines (TCM) for the prevention and treatment of infantile repeated respiratory infection.Methods The oral TCM compound literatures for the prevention and treatment of infantile repeated respiratory infection were collected from four databases,including China Biology Medicine disc,CNKI,VIP Periodical and Wanfanf Data.The retrieval time was from January 2006 to July 2006.Then the TCM oral compound prescriptions meeting the requirements were obtained by the literature arrangement and performed the terms standardized processing for extracting the information and establishing Excel table.Then the Kaiyuan software package R i386 3.3.0 was used to conduct the drug frequency,association rules analysis and clustering analysis.Results A total of 311 prescriptions were screened out and 208 kinds of traditional Chinese medicine were analyzed.It was found that the higher compatibility frequencies of TCM were atractylodes,radix glycyrrhizae,windproof,radix astragali,radix pseudostellariae,poria cocos,dried tangerine or orange peel,etc.;the strong association rules prompted that modified Yupinfeng Powder composed of core medicines such as astragalus,atractylodes and windproof was the basic formula for prevention and treatment of infantile repeated respiratory infection;the clusters analysis found some TCM societies such as emembranous Astragalus mongholicus-keel-oysters,Atractylodes-Poria cocos-licorice-Astragalus mongholicus-dangshen.Conclusion The drug frequency,association rules analysis and clustering analysis can reveal the compatibility rules of TCM prescriptions for preventing and treating infantile repeated respiratory to provide reference basis for optimizing the clinical prescription and improving the curative effect.

Objective:To evaluate the reliability and clinical application of a self-established classification system for the lower 1/3 humeral fractures in adults.Methods:A retrospective study was performed to analyze the 88 patients with lower 1/3 humeral fracture who had been admitted to Department of Orthopedics, The Second Hospital of Fuzhou between January 2013 and December 2020. There were 61 males and 27 females with an age of (34.6±12.7) years. The lower 1/3 humeral fractures were classified according to the location of the fracture line, displacement, and bone mass into 3 types: type Ⅰ: transverse and short oblique ones; type Ⅱ: oblique and spiral ones; type Ⅲ: oblique and spiral ones with butterfly-shaped bone mass. After a junior orthopedic surgeon, an intermediate orthopedic surgeon, a senior orthopedic surgeon, and a radiologist had learned this novel classification system, they were asked to classify the lower 1/3 humeral fractures in this cohort independently to assess the reliability of the classification system. Our treatments were based on this novel classification. Open reduction and internal fixation with a unilateral plate through a lateral approach was performed for type Ⅰ fractures, internal fixation with a unilateral plate plus compression screws through a lateral approach for type Ⅱ fractures, and double plate internal fixation through the ulnar and anterolateral approaches for type Ⅲ fractures. The functions of the radial, ulnar, and musculocutaneous nerves and fracture healing time were observed postoperatively. The shoulder and elbow functions were evaluated using Neer shoulder function score and Mayo elbow function score.Results:Of the 88 patients in this cohort, 20 were type Ⅰ, 25 type Ⅱ, and 43 type Ⅲ. The mean Kappa value for inter-observer reliability was 0.878 at the first stage and 0.914 at the second stage, and the mean Kappa value for intra-observer reliability was 0.950. All patients were followed up for (14.1±3.7) months. Iatrogenic injury to the radial nerve was observed in 2 patients, but no injury to the ulnar nerve, the musculocutaneous nerve or important blood vessels or failure of internal fixation was reported. All patients achieved bony union after (12.7±2.0) weeks. The maximum elbow flexion was 137.8°±4.8°, and the maximum elbow extension 2.4°±1.6°. The Mayo elbow function score was (92.0±3.1) points and the Neer shoulder function score (92.2±3.2) points.Conclusions:Our classification system for the lower 1/3 humeral fractures in adults is reliable. As the treatments corresponding to the novel classification system can achieve satisfactory clinical outcomes, the classification system has a clinical value.