Bony landmark · Shoulders
Lesser tubercle
Tuberculum minus
Reviewed by Dr. Ryan Rietz, D.P.T. and Dr. John Breyman, D.C.
The lesser tubercle is the smaller knob on the front of the top of the arm bone, separated from the greater tubercle by a groove. The subscapularis inserts here — the fourth rotator cuff muscle, and the only one that comes from the front of the shoulder blade. Its attachment completes the cuff's grip all the way around the head of the humerus.
Also known as
- lesser tuberosity