[Cannulated screw combined with buttress plate for the treatment of transarticular shear fractures of the distal humerus]

Hao-Chen Tang, Ming Xiang, Hang Chen, Xiao-Chuan Hu, Shun Yang, Guo-Yong Yang
Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology 2014, 27 (2): 161-4

OBJECTIVE: To investigate the clinical outcomes of cannulated screw combined with buttress plate in treating transarticular shear fractures of the distal humerus.

METHODS: From July 2008 to December 2011, 17 patients with shear fractures of the distal humerus were treated with cannulated screw combined with buttress plate. Among them, included 10 males and 7 females aged from 20 to 59 years old (mean 36.5). All the fractures were classified into type I (8 cases), type II (1 case), type III (3 cases) and type IV (5 cases) according to Bryan-Morrey and McKee classification. According to AO/ASIF classification, 10 cases were type 13B3.1, 7 cases were type 13B3.3; according to Dubberley classification, 5 cases with type 1A, 2 cases with type 1B, 2 cases with type 2A, 2 cases with type 2B, 4 cases with type 3A, 2 cases with type 3B. There were 12 cases with fresh injuries, 4 cases with old injuries. All fractures were closed injuries. Complications and range of motion of elbow were observed, and clinical efficacy were evaluated by Broberg-Morrey standard.

RESULTS: All patients were followed up with a mean time of 21.3 months (ranged, 18 to 24). All fractures obtained bone healing from 10 to 15 weeks with a mean of 12.5 weeks. No malunion or delayed healing occurred. Two cases occurred ossification in lateral collateral ligament attachment. 2 cases occurred heterotopic ossification in the capitellum in front of capsule joint. The range of elbow extension was (16 +/- 7) degrees, flexion was (115 +/- 9) degrees, the average are of pronation and supination was (65 +/- 5) degrees and (60 +/- 5) degrees respectively. According to Broberg-Morrey standard, there were excellent in 7 cases, good in 8 cases, fair in 2 cases, and average score was 92.44 +/- 4.64.

CONCLUSION: For transarticular shear fractures of the distal humerus, classification should be performed according to preoperative X-ray and CT, cannulated screw and buttress plate combined and early function rehabilitation could recover elbow function.

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