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BACKGROUND Surgical managements were recommended for unstable distal clavicle fracture owing to the high incidence of nonunion. The present study compared the efficacy of anatomical locking plate with versus without additional suture anchor fixation for the treatment of unstable Neer type II distal clavicle fractures. MATERIAL AND METHODS Between January 2013 to January 2015, 28 consecutive patients with unstable Neer type II  fractures were treated by using anatomical locking plate with or without additional suture anchor fixation. The patients were divided into anatomical locking plate group (group A) and anatomical locking plate combined with suture anchor group (group B) according to the surgical method. The operative-related parameters such as operation time, blood loss, length of hospitalization, union time, functional outcomes (Constant score, UCLA score and DASH score) and CC distance were compared. RESULTS The mean follow-up period of the 28 patients was 19.60 months (21.80 versus 18.39 months, respectively). No statistical differences in general and peri-operative parameters were found between 2 groups. The group B had significant higher Constant score than group A (P=0.004, 91.67 versus 83.10). While no statistical differences were reached in the UCLA score and DASH score between 2 groups (P=0.112 and 0.163, respectively). The group A had longer CC distance than group B (11.67 versus 8.94 mm), while no statistic difference was found (P=0.067). CONCLUSIONS For the treatment of acute unstable Neer type II distal clavicle fractures, both surgical methods could offer satisfactory outcome. However, anatomical locking plate combined with additional suture anchor fixation had a better functional and radiographic outcome than that without additional suture anchor fixation.

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Comparison of Treatment of Acute Unstable Distal Clavicle Fractures Using Anatomical Locking Plates with Versus without Additional Suture Anchor Fixation