Abstract
Tack location within the anteroinferior aspect of the glenoid when performing simulated repairs of anteroinferior capsulolabral avulsions (Bankart lesions) was evaluated anatomically and radiographically. Arthroscopy was performed on six fresh-frozen cadaveric shoulders, and bioabsorbable tacks were placed through an accessory anteroinferior portal coming into the joint just above the subscapularis tendon using an outside-in technique. Tack location was studied after removal of all soft tissues. In addition to their position on the glenoid, the tacks were also evaluated for being partially or completely within bone. The tacks were recannulated with guide pins and anteroposterior, axillary, and en face glenoid radiographs of each specimen were obtained. This study provides quantitative data about the inferior placement limitations of the insertion angle and location of fixation devices within the anteroinferior glenoid through the anteroinferior accessory portal.
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