RT Journal
A1 Mochizuki, Tomoyuki
A1 Sugaya, Hiroyuki
A1 Akita, Keiichi
T1 Humeral Insertion of the Supraspinatus and Infraspinatus
JF The Journal of Bone & Joint Surgery
JO The Journal of Bone & Joint Surgery
YR 2009
FD May 1
VO 91
IS 5
SP 1276
OP 1276
DO 
UL http://dx.doi.org/
AB 
Regarding the border between the supraspinatus and infraspinatus muscles, Dr. Park states that several studies have observed that the oblique fibers of both the supraspinatus and the infraspinatus fuse or interdigitate as they converge onto the greater tuberosity1-4. In our study, we removed the overlying coracohumeral ligament and the loose connective tissues, which enabled us to detect a distinct border between the supraspinatus and the infraspinatus and to separate them by precisely tracing the anterior margin of the superior tendinous portion of the infraspinatus. We did not observe interdigitated fibers between the supraspinatus and infraspinatus. We discussed in our paper that these observations, which differ from previous reports, were attributable to the differences in dissection methods. Recently, we reconfirmed the validity of our findings by examining histological sections around the insertion of the supraspinatus and infraspinatus. We will report these histological findings in another paper.