title: Biomechanics of the Bankart repair: the relationship between glenohumeral translation and labral fixation site.
abstract: The specific aim of this study was to quantify glenohumeral translations in cadaveric shoulders after repair of the superior and middle regions of a surgically created Bankart lesion and after repair of the superior, middle, and inferior regions of the same lesion. Anterior-posterior, superior-inferior, and medial-lateral translations in nine cadaveric specimens were tested with shoulders in 0 degree, 45 degrees, and 90 degrees of humeral abduction and varying degrees of humeral rotation. There was statistically significantly less anterior and inferior translation after three-site labral repair compared with after two-site labral repair, and this effect was greatest at 90 degrees of glenohumeral abduction. The decreased translations demonstrated with three-site repair emphasized the importance of careful repair of the labrum to the inferior glenoid rim during a Bankart reconstruction and suggested that failure to do so may be a contributing factor to recurrent instability after anterior shoulder reconstruction.
authors.affiliation: Department of Orthopaedics and Rehabilitation, Pennsylvania State University College of Medicine, Hershey 17033, USA.
authors.forename: K P
authors.initials: KP
authors.lastname: Black
authors.forename: D J
authors.initials: DJ
authors.lastname: Schneider
authors.forename: J R
authors.initials: JR
authors.lastname: Yu
authors.forename: C R
authors.initials: CR
authors.lastname: Jacobs
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D002102:Cadaver; D005260:Female; D006801:Humans; D006811:Humerus / Q000502:physiology; D008023:Ligaments, Articular / Q000601:surgery*; D008297:Male; D016059:Range of Motion, Articular; D012783:Shoulder Dislocation / Q000601:surgery*