Orthopedic Trauma Directions 2008; 6(2): 33-37
DOI: 10.1055/s-2008-1038166
Classic article review
© Georg Thieme Verlag Stuttgart · New York

Fractures of the coronoid process of the ulna

J Bone Joint Surg Am.; 71: 1348 - 1354W.  Regan, B.  Morrey (1989)
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02. April 2008 (online)

Author summary

Three types of fractures of the coronoid process of the ulna were described based on x-ray findings: Type I - avulsion of the tipp of the process; Type II - a fragment involving 50% of the process or less; and Type III - a fragment involving more than 50% of the process. Associated injuries, such as a concurrent dislocation or fracture, were seen in 14%, 56%, and 80% of these patients, respectively. The percentage of patients with excellent or good results (based on an objective elbow-performance index) varied by fracture type: 92% for Type-I-fracture, 73% for Type-II, and 20% for Type III. Reoperation and heterotopic bone formation were most frequent with Type III fractures and least common in patients with Type-I-fractures. For patients with Type-I- or II-fractures, early motion within 3 weeks after injury was recommended. For patients with Type-III-fractures, reduction and fixation, followed by early motion when possible, was considered to be the preferred treatment.