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KMID : 0361620160510050403
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Journal of the Korean Orthopaedic Association
2016 Volume.51 No. 5 p.403 ~ p.410
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Surgical Outcomes after Olecranon Plating with Retrograde Coronoid Process Screw Fixation through the Plate Hole in the Bifocal Fracture of the Proximal Ulna
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Byun Seong-Eun
Lee Ho-Jae
Kim Jun-Hyun
Lee Sang-June
Kim Uk
Han Soo-Hong
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Abstract
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Purpose: Bifocal fracture of the proximal ulna is a fracture of the olecranon accompanied by fracture of the coronoid process. The purpose of the current study was to analyze the clinical results of the author's technique in bifocal fracture of the proximal ulna.
Materials and Methods: Fifteen patients (10 men, 5 women) treated at CHA Bundang Medical Center from April 2006 to October 2014 were analyzed retrospectively. All patients underwent internal fixation using a locking compression plate (LCP) with retrograde screw fixation of the coronoid process through a screw hole of the plate. Mean age of the patients was 42.6 years and the mean follow-up period was 18.6 months. Comminuted coronoid fractures with hard to screw fixation, complex injuries combined with open damage, and complete ligament rupture were excluded. Fracture union and articular congruity were examined on the follow-up radiographs. Range of motion, disability of the arm, shoulder and hand (DASH) score, and Mayo elbow performance score were evaluated for functional analysis.
Results: Fracture union was achieved and articular step off was less than 2 mm in all patients on the follow-up radiographs. The mean value of modified Mayo elbow score was 92.14 (80?100) and DASH score was 7.11 at last follow-up. The mean range of motion of elbow was 128o. There was one case of small heterotopic ossification as a radiographic complication which had no functional deficit.
Conclusion: Internal fixation of bifocal multifragmentary articular fractures of the proximal ulna with anatomically contoured LCP olecranon plate and retrograde long screws could be a recommendable surgical procedure. This study showed that the precontoured plate with retrograde coronoid process screw fixation can produce good clinical and radiographic outcomes in bifocal fractures of the proximal ulna. We recommend this procedure in this type of fracture.
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KEYWORD
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proximal ulna fracture, olecranon fracture, coronoid process fracture, internal fixation
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