Artikel
Anterolateral fractures of the coronoid process of the ulna
Suche in Medline nach
Autoren
Veröffentlicht: | 22. Oktober 2019 |
---|
Gliederung
Text
Objectives: This study aimed to describe the incidence of anterolateral coronoid fractures in a level 1 trauma center and their fragment sizes. We hypothesized that anterolateral coronoid fractures occur regularly in cases of injured elbows.
Methods: Patients treated for a coronoid process fracture at our institution and receiving a computer-tomography scan between 06/2011 and 07/2018 were included. We excluded patients <18 years, with arthritic changes or previous operative treatment to the elbow, and with complex elbow injuries. In patients with anterolateral fractures to the coronoid process coronoid height and fragment size (antero-posterior, medio-lateral, and craniocaudal) were measured and correlated to elbow function at final clinical follow-up.
Results: 72 patients (mean age: 47 years; ±17.6) could be included in the study. 15 patients (20.8%) had an anterolateral facture. The mean antero-posterior fragment length was 7 ± 2.3 mm. The fragment affected a mean of 44 ± 13.0% of the coronoid height. The mean mediolateral size of the fragment was 9 ± 4.3 mm, the mean cranio-caudal size was 6 ± 2.5 mm. 14 of these 15 patients were treated operatively, with 9 cases of osteosynthesis of the coronoid. Mean follow-up after operation was 17 ± 12.3 months. Mean range of motion for flexion/extension was 121 ± 20.3° and 152 ± 26.2° for pronation/supination.
Conclusion: Coronoid fractures regularly include the anterolateral facet, possibly affecting the annular ligament insertion.