Torn Rotator Cuffs are a Common Shoulder Injury

Author: Howard J. Luks, MD- Posted in: Sports Medicine 1 Comment

Torn rotator cuffs are a frequently encountered problem identified in my office on a daily basis. Sadly, far too many patients are under the assumption that because something is torn, it must therefore be fixed. Luckily, many of you with torn rotator cuffs will not require surgery.  Let’s dive a little deeper in the shoulder and the subject of rotator cuff tears.

The rotator cuff are four small muscles which control our shoulder stability and motion. These are small muscles which are easily overcome by repetitive stress, age related degeneration or a traumatic injury.    In order to guide you further, let’s answer the following questions.

Torn Rotator Cuffs Questions

  • Why are torn rotator cuffs so common?

    Torn Rotator Cuffs

    Normal Rotator Cuffs

  • What caused my torn rotator cuff?
  • Do all torn rotator cuffs require surgery?
Torn Rotator Cuffs

Torn Rotator Cuff

The rotator cuff is composed of tendon tissue.  A tendon is the structure which connects a muscle to the bone.  In the pictures to the right the rotator cuff is the white tissue you see attaching to the ball which is the top of the arm bone.

Most of our tendons are very thick and very strong.  They also have a very firm grasp of the bone they are attached to.  Our bodies are very “smart”.  The more we use a tendon, the stronger and thicker it gets.  Similarly, the less we use it, the weaker it becomes.

Most torn rotator cuffs are not caused by an injury such as a fall.  Some torn rotator cuffs are caused by trauma, and I’ll discuss that later.  The vast majority of rotator cuff tears involve the tendon of the supraspinatus muscle.  Because of how the shoulder works, the supraspinatus is subject to very little stress… therefore the tendon can become thin; its attachment becomes weak, and eventually a hole develops.  Many torn rotator cuffs have a degenerative origin, much like the front of your knee on your favorite pair of blue jeans.  This hole is unfortunately called a tear — and many of you believe you have actually torn your rotator cuff.  We refer to these common tears as “degenerative rotator cuff tears” .  That’s implies that the tendon simply wore out.

Does all Torn Rotator Cuffs Need Surgery?

There is a lot of recent literature or scientific evidence that many torn rotator cuffs  do not become larger and the majority of torn rotator cuffs will not require surgery.  Contrary to the studies I just mentioned, there is literature showing that the number of torn cuffs being treated surgically has also risen dramatically. The authors speculate that our fee-for-service reimbursement system is to blame.

The majority of people with a degenerative and torn rotator cuffs can be managed quite effectively with physical therapy, injections, rest from certain overhead activities for a while and patient observation :-(.  We do recommend an annual visit to your doctor so they can assess your level of function, pain and perhaps image your rotator cuff with an Ultrasound or MRI to look to see if the tear has become larger.  In patients who fail to improve with non-surgical measures, or in patients whose tear becomes much larger, then rotator cuff surgery is indicated.


I mentioned before that most torn rotator cuffs occur due to the fact that our tissues simply wears out.  Another (far less common) source of a tear in your rotator cuff is trauma or an injury.  Torn rotator cuffs  generally requires a significant injury to cause a tear.  Most shoulder docs would agree.  In patients with acute (recent), traumatic tears, surgery is generally indicated to repair the tear and sew it back to the bone it tore from. PRP or Stem cells for the treatment of torn rotator cuffs is controversial at present… and is the subject of significant investigation.

Torn Rotator Cuff 2

Torn Rotator Cuff


Torn Rotator Cuff Repaired

Repaired Rotator Cuff Tear




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One Response to “Torn Rotator Cuffs are a Common Shoulder Injury”

  1. Reply Why Do Shoulders Snap or Pop? Howard Luks, MD Westchester County NY says:

    […] If the rotator cuff tendons are injured then there is a loose edge within the shoulder that can catch on other ligaments or structures in the shoulder.  This may lead to painful snapping or popping. Click here to help determine if you have a rotator cuff tear?   Click here to learn more about rotator cuff tears.  […]

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