Comparison of Curved and Straight Anchor Insertion for Bankart Repair

Abstract

The quality of Bankart repair may be compromised by the presence of glenoid perforation during suture anchor placement. The purpose of this study was to compare the rate of glenoid perforation and biomechanical strength of antero-inferior suture anchors placed with a curved vs a traditional straight technique through an anteroinferior portal. Ten bilateral pairs of fresh human cadaveric shoulders were randomized to either a curved or a straight suture anchor insertion technique. An anteroinferior portal was used to place a 1.5-mm soft anchor in the anteroinferior glenoid (5:30 position for right shoulders). Anatomic dissection was performed, and the maximum load of each anchor was measured using a materials testing system. The overall rate of glenoid perforation by the anteroinferior anchor was 50%. The rate of glenoid perforation was 40% in the straight group and 60% in the curved group ( P =.41). The median maximum load was 86 N in the straight group and 137 N in the curved group ( P =.23). The median maximum load of the anchors that did perforate the glenoid was 102 N and of those that did not was 118 N ( P =.72). The mode of failure was suture anchor pullout in all except one specimen. The curved guide was not superior to the traditional straight guide in terms of the rate of glenoid perforation or the maximum load of the suture anchors. Anterior cortical perforation of the glenoid during anteroinferior suture anchor placement is common with both techniques. [ Orthopedics . 2019; 42(2):e242–e246.]

Morphological classification and measurement of the glenoid cavity using three-dimensional reconstruction in a Chinese population

“…Numerous studies have established that understanding the anatomical characteristics of the glenoid cavity is conducive to choosing the proper therapies for shoulder dislocation, scapular fractures and glenohumeral arthritis [1][2][3][4] and especially for improving the surgical treatment for Bankart injury or anterior shoulder dislocation 5 . The morphology of the glenoid cavity should be considered when selecting the ideal anchor insertion angle for a Bankart repair 6 . The morphological structure of the glenoid cavity affects some common shoulder operative methods, such as total shoulder arthroplasty, in addition to associated diseases [7][8][9][10] .…”