1 doctor weighed in:

Why is the suprasipatus muscle the most frequently involved muslce in rotator cuff injuries?

1 doctor weighed in
Dr. Shawn Hennigan
Orthopedic Surgery

In brief: Blood supply

The supraspinatus is most commonly torn for a couple of reasons.
First, the tendon gets blood supply from attachment site on bone, and from muscle. Between these is a watershed area where blood supply is limited. Allows for more rapid tendon degradation. Next, it is subject to pathologic contact with the undersurface of the acromion, known as impingement.

In brief: Blood supply

The supraspinatus is most commonly torn for a couple of reasons.
First, the tendon gets blood supply from attachment site on bone, and from muscle. Between these is a watershed area where blood supply is limited. Allows for more rapid tendon degradation. Next, it is subject to pathologic contact with the undersurface of the acromion, known as impingement.
Dr. Shawn Hennigan
Dr. Shawn Hennigan
Thank
Get help from a real doctor now
Dr. Warren Strudwick
Board Certified, Sports Medicine
26 years in practice
491K people helped
Continue
108,000 doctors available
Read more answers from doctors