What is the labrum of the arm?
The labrum is a cup-shaped rim of cartilage that lines and reinforces the ball-and-socket joint of the shoulder. The shoulder joint is composed of the glenoid (the shallow shoulder “socket”) and the head of the upper arm bone known as the humerus (the “ball”).
Is the labrum in the shoulder a muscle?
The labrum is a type of cartilage found in the shoulder joint. The shoulder is a ball-and-socket joint where the arm meets the body.
Is labrum a muscle or ligament?
This rim of cartilage is called the “labrum”. Ligaments surround and connect the ball to the socket. These ligaments attach directly to the ball but attach to the labrum as opposed to the bone at the socket. The labrum attachment to the bone is the “weak link” of this setup.
Can a torn labrum cause arm pain?
This pain is commonly worse with overhead activities and rotation of the shoulder. Additionally, in throwers, a sensation of a “dead arm” can often be described. Often, superior labral tears (SLAP) are associated with contacture and tightness of the posterior-inferior joint capsule.
What is the function of labrum?
The cartilaginous labrum makes the socket deeper, creating space for the bones to move. The scapula, or ‘wingbone’, is surrounded by the labrum, allowing the bone of the upper arm (the humerus) to fit into the joint.
Is labrum part of rotator cuff?
The shoulder labrum is a piece of soft cartilage in the socket-shaped joint in your shoulder bone. It cups the ball-shaped joint at the top of your upper arm bone, connecting the two joints. A group of four muscles called the rotator cuff helps the labrum keep the ball in the socket.
Can a torn labrum cause bicep pain?
Overuse or sudden injury can cause bicep tendinitis and superior labral tears, which cause pain in the front of the shoulder and down to the biceps muscle.
What is a labrum strain?
Overview. A shoulder labral tear or strain also referred to as a SLAP tear, is often caused by a traumatic shoulder injury, which results in a tear in the labrum. The labrum is the soft cartilage in the socket-shaped joint in the shoulder bone.
Where does labrum hurt?
The primary symptom of a labral tear that is not associated with instability is pain in the area of the injury. Patients often say: the pain is located at the back on top of the shoulder or in the front on top of the shoulder. the pain feels like it is deep inside.
Does a labrum tear affect the bicep?
Is the labrum part of the rotator cuff?
What muscles are affected in labral tear?
A very common labral injury is a tear that occurs on the top of the labrum, extending from the front to the back of the cartilage. This is known as a SLAP tear (“SLAP” is an acronym for superior labral anterior to posterior tear). This injury affects the attachment of the biceps tendon to the glenoid.
How do I know if I re tore my 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’s the difference between a rotator cuff tear and a labrum tear?
A classic overuse injury, swimmer’s shoulder occurs when repetitive overhead motions (like swimming, throwing, etc.) cause inflammation in the rotator cuff, compressed tendons and reduced blood flow. Labral tears, on the other hand, can result from both the wear and tear of repetitive motion or from traumatic injury.
Is your bicep connected to your labrum?
The long head of the biceps tendon connects to the shoulder’s labrum, which acts like a bumper guard or cushion around the rim of the shoulder’s socket.
How do I know if I hurt my labrum?
Symptoms of a Labral Tear
- A dull throbbing ache in the shoulder joint.
- Difficulty sleeping due to shoulder discomfort.
- “Catching” of the shoulder joint with movement.
- Pain with specific activities.
- Dislocations of the shoulder.
Does a torn labrum affect the bicep?
Where is the labrum muscle?