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Shoulder

Shoulder Instability (Labrum Tears)

What is the labrum?

The labrum is a thick piece of cartilage that lines the rim of the shoulder socket to deepen the socket for shoulder stability. The labrum also functions as an attachment for shoulder ligaments and the bicep tendons.

However, the labrum has no blood supply so it may be difficult for a large tear to heal on its own. A small tear may heal with conservative measures if the patient is able to function and avoid putting stress on the injury.

What are the different of types labrum tears?

The labrum can tear off the bone, along the edges or where the biceps tendon attaches.

  • A tear along the front bottom (anteroinferior) aspect of the shoulder socket (glenoid) is called a Bankart lesion. These tears result from trauma, cause instability and predispose to subsequent shoulder instability. Bankart lesions are especially common in young, active individuals who participate in contact sports.
  • A tear at the top of the shoulder socket is called a SLAP (superior labrum anterior posterior) tear. This injury may be caused by repetitive trauma from overhead motions that fray the labrum. This injury pattern is common in tennis, baseball pitchers, swimmers, golfers and weightlifters.
  • A tear on the back of the shoulder is called a posterior labral tear, or a reverse Bankart lesion.
  • A combination of these tears can involve 270 to 360 degrees of the shoulder socket.

What causes a labral tear?

Labral tears can result from a traumatic event like a fall or a direct blow, repetitive stress and normal wear and tear. A SLAP tear may also occur in conjunction with injuries to the long head biceps tendon. A shoulder subluxation or dislocation and tear the labrum off the bone. Long-term instability caused by lax ligaments or impingement can also cause labral tears.

What are the symptoms of a labral tear?

Symptoms are related to the type of tear.

  • A sharp popping, catching or grinding sensation in the shoulder with certain movements, mostly overhead
  • A deep ache, or no pain at all
  • Loss of strength
  • Decreased range of motion
  • Shoulder instability – subjective, objective or both

How is it diagnosed?

Dr. Godin will take a complete medical history, ask about previous shoulder injuries and evaluate your complaints and symptoms. He will conduct a physical exam, including range of motion, strength, stability and pain testing.

X-rays will be taken to rule out other injuries and to assess for bone loss. Advanced imaging including a MRI and a CT scan allow for further evaluation of the bone and soft tissues.

Dr. Jonathan Godin has successfully treated a large selection of shoulder conditions in professional athletes and everyone else! His expertise is in complex shoulder repairs.  Dr. Godin offers compassionate personalized care and treatment options geared to your needs and goals.


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