Objective To compare the clinical outcomes of mini-invasive plate osteosynthesis ( MIPO ) and conventional open plating for complex fractures of midshaft clavicle. Methods The authors retrospec-tively reviewed the data of complex fractures of midshaft clavicle ( AO/OTA types 15-B2 and 15-B3 ) which had been treated with MIPO or conventional open plating between January 2010 to February 2016. Forty-one patients were treated with MIPO and 43 with conventional open plating. The 2 groups were compared in terms of incision length, hospital stay, bone union time, postoperative Constant score and Disabilities of the Arm, Shoulder and Hand ( DASH ) score, patients'satisfaction and complications. Results The average follow-up was 21. 2 ± 9. 2 months for MIPO group and 23. 1 ± 11. 8 months for conventional open plating group. The incision length ( 4. 3 ± 0. 5 cm ) , hospital stay ( 7. 7 ± 1. 9 d ) and union time ( 10. 6 ± 3. 2 w ) in the MIPO group were signifi-cantly shorter than those in the conventional open plating group ( 8. 4 ± 1. 3 cm, 9. 6 ± 3. 1 d and 12. 3 ± 3. 9 w, respectively ) ( P <0. 05 ) . The MIPO group had significantly lower incidences of hypertrophic scarring and dysesthesia in the area of incision but significantly higher patients'satisfaction than the conventional open plating group ( P <0. 05 ) . There were no significant differences in the Constant score or DASH score at 3 months, 6 months and the final follow-up ( P > 0. 05 ) . Conclusion In the treatment of complex fractures of midshaft clavicle, although both MIPO and conventional open plating can lead to similar functional outcomes, MIPO may be advantageous over conventional open plating in smaller surgical incision, more rapid fracture union, shorter hospital stay and higher patients'satisfaction.

Objective To evaluate the clinical outcomes of split fractures of humeral greater tuberosity treated by our self-designed new type of anatomical locking plate.Methods From September 2012 to February 2017,23 patients were treated for acute split fracture of the humeral greater tuberosity using our self-designed new type of anatomical locking plate.They were 13 males and 10 females with a mean age of 52.8 years (range,from 25 to 81 years).Of them,6 were beyond 60 years old, 12 had comminuted fracture,10 were complicated with glenohumeral dislocation,and 12 with rotator cuff tear.The patients were evaluated clinically with Constant-Murley score,visual analog scale (VAS),range of motion and complications at the last follow-ups.Results This series were followed up for 12 to 30 months (mean,23.2 months).All the fractures healed after an average time of 10.6 weeks (range,from 8 to 12 weeks).Their mean Constant-Murley Score was 92.1 points (range,from 70 to 100 points),giving an excellent and good rate of 95.7％ (22/23);their VAS scores averaged 0.8 points (range,from 0 to 4 points).Their forward flexion averaged 160.6°,abduction 157.8°,external rotation 46.4°,and internal rotation up to the T11 level,respectively.Their complications rate was 17.4％ (4/23).One case of axillary nerve injury,one case of relapse of glenohumeral dislocation at sports,and 2 cases of stiff shoulder were observed.Conclusion Split fractures of the humeral greater tuberosity can be successfully treated with our new type of anatomical locking plate which serves as a new alternative treatment.

Radiocarpal fracture-dislocation (RFD) is a rare injury normally associated with the destruction of bones, joints and ligaments. The improper diagnosis and treatment of RFD will cause severe complications and affect the long-term function of wrist joints. The difficulties of clinical diagnosis and treatment lie in the accurate diagnosis, identification and reconstruction of the structure of specific injury. As the foreign and domestic literatures are mainly case analyses or systemic case reports rather than large-scale reports, there still lacks a systemic knowledge of the standard diagnosis and treatment of RFD clinically, thus leading to problems such as missed diagnosed or misdiagnosed, improper application of treatment methods and incomplete reconstruction. Therefore, the authors reviewed relevant literatures about the features, diagnosis and treatment of RFD, in order to provide references for the clinical diagnosis and treatment of RFD.

Objective To evaluate the clinical and radiographic outcomes of locking plate plus endosteal fibular allograft augmentation for unstable proximal humeral fractures with comminuted medial column.Methods We retrospectively analyzed the 48 patients who had been treated by locking plate plus endosteal fibular allograft augmentation and fully followed up for unstable proximal humeral fractures with comminuted medial column between June 2014 and March 2016.They were 12 men and 36 women,with an average age of 64.3 years (from 33 to 87 years).By the Neer classification,7 cases were two-part fractures,21 three-part fractures and 20 four-part fractures.Postoperative assessments included Constant-Murley scores,shoulder scores of Quick Disabilities of the Arm,Shoulder and Hand (Quick DASH),Short Form Health Survey (SF12),humeral head height loss,change in humeral neck shaft angle,postoperative complications and revision rate.Results Their follow-ups averaged 16.7 months (from 12 to 30 months).Their final follow-ups showed a mean Constant score of 83.3 (from 67 to 98),a mean DASH shoulder score of 18.9 (from 6.6 to 49.9),and a mean SF12 of 82.8 (from 56 to 98).Postoperatively,the humeral head height loss averaged 1.2 mm (from 0.1 to 3.4 mm) and the neck-shaft angle 3.1° (from 0.1° to 9.1°).Complications happened in 5 cases (10.4％):loss of reduction in one and screw penetration out of the articular surface in 4.Conclusion Locking plate along with endosteal fibular strut allograft augmentation is a promising technique for the treatment of proximal humeral fractures with comminuted medial column because fibular strut allograft may enhance mechanical stability of the humeral head,maintain fracture reduction,reduce humeral head height loss and complications to ensure good clinical outcomes.