Anterior Capsulectomy Through Humeral Fenestration in Arthroscopic Arthrolysis for Elbow Stiffness Is Safe and Effective.

Purpose: To evaluate arc of motion and complications following transhumeral anterior capsulectomy through a purely posterior approach with the Outerbridge-Kashiwagi procedure in treating elbow stiffness. Methods: Patients who were treated for elbow stiffness between April 2003 and February 2023 were retrospectively identified. The inclusion criteria were an extension/flexion arc deficit of at least 30° and treatment with arthroscopic arthrolysis through posterior and posterolateral portals with humeral fenestration. Elbow joint range of motion and the Mayo Elbow Performance Score were assessed preoperatively, intraoperatively, at 6 weeks, and at final follow-up. The follow-up ended when the elbow became asymptomatic again or when the recovery was considered stable. Postoperative complications were recorded. Results: A total of 30 patients (23 men/7 women; 31 elbows; 1 bilateral/29 unilateral) were included. Mean follow-up was 11.1 months (1-64). Mean joint amplitudes intraoperatively increased in all areas of mobility, including extension/flexion from 86° to 132.6° ( Conclusions: Arthroscopic arthrolysis of a stiff elbow using a purely posterior approach with anterior capsulectomy via the Outerbridge-Kashiwagi procedure was safe and effective. Clinical results showed improvement in joint range of motion in flexion/extension and pronation/supination, both intraoperatively and postoperatively, with no postoperative neurologic complications. Level of Evidence: Level IV, therapeutic case series.