Arthroscopic stabilization in patients with an inverted pear glenoid: results in patients with bone loss of the anterior glenoid.

Background: Recent literature has demonstrated that the success rates of arthroscopic stabilization of glenohumeral instability deteriorate in patients with an anteroinferior glenoid bone deficiency, also known as the "inverted pear" glenoid.

Purpose: This study was conducted to assess the outcomes of arthroscopic stabilization for recurrent anterior shoulder instability in patients with a mean anteroinferior glenoid bone deficiency of 25% (range, 20%-30%).

Study Design: Cohort study; Level of evidence, 3.

Arthroscopic treatment of posterior shoulder instability: results in 33 patients.

Background: Posterior shoulder instability is a relatively rare condition and a surgical challenge. Arthroscopic techniques have allowed for a potential improvement as well as diagnosis and management of this condition.

Purpose: To evaluate the outcomes of arthroscopic posterior shoulder stabilization and to evaluate preoperative and intraoperative variables as predictors of success.