J Shoulder Elbow Surg 2002 Jan-Feb;11(1):72-9
Glenoid osteophyte and rotator cuff tears: an anatomic study.
Konno N, Itoi E, Kido T, Sano A, Urayama M, Sato K.
of Orthopedic Surgery, Akita University School of Medicine, Hondo 1-1-1, Akita
The purpose of this study was to determine the
morphologic characteristics of the glenoid osteophyte and its relationship to
rotator cuff tears. Eighty-six cadaveric shoulders were studied. After
inspection of cuff pathology, the glenoid was examined with soft x-rays.
Histologically, degenerative changes of the articular cartilage and the labrum
were assessed. There were 30 shoulders with rotator cuff tears (35%). Two
types of glenoid osteophyte were identified: angular and hooked. Both
osteophytes were commonly observed in the anterior to inferior portions of the
glenoid. The length of hooked osteophytes was significantly greater in
shoulders with full-thickness tears (2.7 +/- 2.2 mm [mean plus minus SD]) than
in those with other cuff conditions (P =.0058). The hooked osteophyte was more
commonly observed in shoulders with full-thickness tears (43%) and associated
with degenerative changes of the cartilage and labrum. We conclude that the
hooked osteophyte of the glenoid is characteristic in shoulders with
full-thickness tears of the rotator cuff.