Convergent dislocation of the elbow in adults: A retrospective study.

Backgrounds: This study aims to evaluate the surgical treatment and clinical outcomes of convergent dislocation of the elbow (CDE) in adults.

Methods: Between January 2017 and September 2022, we performed a retrospective study of patients with CDE presenting in XXX and XXX Hospital and receiving operative treatments after failed closed reductions. The elbow and the forearm's range of motion (ROM) were measured and compared using a paired t-test between pre- and post-operation. Furthermore, the Mayo Elbow Performance Score (MEPS) assessed objective elbow evaluation and functional outcomes.

Results: Eleven patients were followed up for an average period of 9.8 months. Four males and seven females were enrolled, aged 31.5 ± 9.0 years. The average ROM of flexion-extension at the elbow was significantly improved after surgery (27.3 ± 12.3° vs. 116.8 ± 23.7°, p < 0.001). The average pronation-supination also showed a similar increase (21.8 ± 9.3° vs. 106.4 ± 23.4°, p < 0.001). The MEPS of the final follow-up was 95.9 ± 7.0 points. However, seven cases were found to have varying degrees of elbow stiffness. Furthermore, secondary procedures were performed in three cases, including the elbow arthrolysis and the anterior transposition of the ulnar nerve.

Conclusions: Our study showed several operative methods following failed closed reduction attempts where anatomical reduction of humeroulnar and proximal radioulnar joints and instant rehabilitation obtained relatively satisfactory clinical outcomes.