Biomechanics of the Bankart repair: the relationship between glenohumeral translation and labral fixation site

Am J Sports Med. 1999 May-Jun;27(3):339-44. doi: 10.1177/03635465990270031201.

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.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Biomechanical Phenomena
  • Cadaver
  • Female
  • Humans
  • Humerus / physiology
  • Ligaments, Articular / surgery*
  • Male
  • Range of Motion, Articular
  • Shoulder Dislocation / surgery*