FAQ: What Is Glenoid Labrum In Anatomy?

What is a glenoid labrum?

The glenoid labrum is fibrocartilaginous tissue within the glenoid cavity of the shoulder joint. The purpose of the glenoid labrum is to provide stability and shock absorption within the joint.

What is the primary function of the glenoid labrum in the shoulder?

Medical Definition of Glenoid labrum. Glenoid labrum: A ring of fibrocartilage that runs around the cavity of the scapula (wingbone) in which the head of the humerus (the bone in the upper arm) fits. The labrum deepens this cavity (the glenoid cavity) and effectively increases the surface of the shoulder joint.

What is the labrum and what is its purpose?

The shoulder labrum is a thick piece of tissue attached to the rim of the shoulder socket that helps keep the ball of the joint in place. The labrum can tear a few different ways: 1) completely off the bone, 2) within or along the edge of the labrum, or 3) where the bicep tendon attaches.

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What is the glenoid labrum attached to?

The glenoid labrum is a fibrocartilaginous structure that attaches as a rim to the articular cartilage of the glenoid fossa and serves to deepen and increase the surface area.

What is the function of glenoid labrum?

The glenoid labrum is similar to the meniscus of the knee. It is a fibro-cartilaginous rubbery structure which encircles the glenoid cavity deepening the socket providing static stability to the glenohumeral joint. It acts and looks almost like a washer, sealing the two sides of the joint together.

How serious is a torn labrum shoulder?

The labrum is the attachment site for the shoulder ligaments and supports the ball-and-socket joint as well as the rotator cuff tendons and muscles. It contributes to shoulder stability and, when torn, can lead to partial or complete shoulder dislocation.

Can you rehab a torn labrum without surgery?

Your physical therapist can also assess the severity of your injury based on your response to treatment. If you find yourself feeling improvements within three months of physical therapy, chances are your labral tear can be managed without surgical intervention.

How can you prevent glenoid labrum injuries?

  1. Complete a good warm up with stretching before starting your activity.
  2. Strengthen muscles surrounding the shoulder joint, especially rotator cuffs to help create shoulder stability.
  3. Avoid walking on slippery surfaces to decrease the chance of a fall.

What are the six motions of the shoulder?

The human shoulder is the most mobile joint in the body. This mobility provides the upper extremity with tremendous range of motion such as adduction, abduction, flexion, extension, internal rotation, external rotation, and 360° circumduction in the sagittal plane.

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How painful is labrum surgery?

Week of Surgery You will be in pain, and although you can mask that pain with pain medications, you may discover that doing so prevents you from taking care of your responsibilities. Your doctor will give you a sling, which he or she will advise you to wear for anywhere between two and four weeks.

What happens if a labral tear goes untreated?

If left untreated, this may lead to chronic or recurrent shoulder instability, pain, and weakness.

How successful is labrum surgery?

Large labral tears that are the result of trauma generally need to be fixed in surgery. The success rate of this surgery is quite good, with over 90 percent of patients returning to their normal activities without any further dislocations.

How is glenoid labral tear diagnosed?

Symptoms

  1. A sense of instability in the shoulder.
  2. Shoulder dislocations.
  3. Pain, usually with overhead activities.
  4. Catching, locking, popping, or grinding.
  5. Occasional night pain or pain with daily activities.
  6. Decreased range of motion.
  7. Loss of strength.

What are the symptoms of a torn labrum?

The symptoms of a sports-related labral tear in the shoulder can include:

  • Pain when doing overhead activities.
  • Grinding, popping, “sticking” in the shoulder socket.
  • Pain at night.
  • Decreased range of motion in the shoulder.
  • Loss of shoulder strength.

What is the glenoid?

The end of the scapula, called the glenoid, meets the head of the humerus to form a glenohumeral cavity that acts as a flexible ball-and-socket joint. The joint is stabilized by a ring of fibrous cartilage surrounding the glenoid, called the labrum.

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