The black arrows in Figure A identify the rotator cable, while the asterix identifies the rotator cresent.
The rotator crescent and rotator cable are two anatomic structures closely associated with the rotator cuff that form the shoulder's "suspension bridge." The rotator crescent is a thin, crescent-shaped sheet of rotator cuff comprising the distal portions of the supraspinatus and infraspinatus insertions. The crescent is bounded at its proximal margin by a thick bundle of fibers called the rotator cable, and thickened portion of supraspinatus. This cable-crescent spans the insertions of supraspinatus and infraspinatus tendons. The rotator cable is over 2.5 times thicker than the rotator crescent as measured by digital micrometer.
Clark and Harryman describe the complex anatomy of the rotator cuff including the "suspension bridge" of the rotator cuff and crescent in their anatomical sectioning of 32 grossly intact cuffs.
Burkhart and Lo review the anatomy, biomechanics, surgical techniques, and outcomes of the arthroscopic rotator cuff repair. They emphasize that achieving a biomechanically stable construct is critical to biologic healing, and discuss the different variables to obtain such a construct.
Illustration A shows an arthroscopic photo annotated with the rotator cable (arrows), rotator cresent (asterix), biceps tendon (BT), and humeral head (HH). Illustration B illustrates the relationship between the rotator cresent (CRES) and rotator cable (Label C). Illustration C shows a coronal cut of the suprespinatus, and how a thickened portion contributes to the rotator cable.
1) Middle glenohumeral ligament - anterior shoulder capsular thickening which provides resistance to anterior translation with the arm in 45 degrees of abduction
2) Rotator interval - the "space" between the anterior leading edge of the supraspinatus tendon and the superior border of the subscapularis tendons.
3) Coracoid process - the "light-house" of the shoulder, a bone projection off the anterior portion of the scapula, just medial to the glenoid.
5) Rotator crescent - thin sheet of rotator cuff comprising the distal portion of the supraspinatus and infraspinatus tendon insertions.
Clark JM, Harryman DT 2nd. Tendons, ligaments, and capsule of the rotator cuff. Gross and microscopic anatomy. J Bone Joint Surg Am. 1992 Jun;74(5):713-25.
PMID:1624486 (Link to Abstract)
Burkhart SS, Lo IK. Arthroscopic rotator cuff repair. J Am Acad Orthop Surg. 2006 Jun;14(6):333-46. Review
PMID:16757673 (Link to Abstract)