Anatomy Of Shoulder Labrum

The question on the anatomy of the shoulder may have a better fit with BiologySE. It coats the surface of the socket area with a soft cartilage enabling the shoulder to move more freely and painlessly.

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Important variations in the normal anatomy of the labrum have been identified.

Anatomy of shoulder labrum. There are several types of shoulder labrum tear including. The muscles surrounding the joint undergo reflex spasm in response to pain. The resting tone of these muscles act to compress the humeral head into the glenoid cavity.

In anatomy and physiology the term labrum is used to refer to an edge or a brim. However in bony terms the socket the glenoid fossa of the scapula is quite shallow and small covering at most only a third of the ball the head of the humerus. The socket of the shoulder joint is shallow and the labrum gives the socket more depth and thus more stability.

It deepens the cavity and creates a seal with the head of humerus reducing the risk of dislocation. The labrum is described like a clock face with 12 oclock being at the top 3 oclock at the front 6 oclock at the bottom and 9 oclock at the back. Between the meeting point of these bones lies the labrum a band of fibrocartilaginous tissue that helps to nest the ball of the upper arm bone within the shallow socket formed by the glenoid.

The glenoid labrum is a cartilage-like structure which sits within the shoulder joint glenohumeral fossa. The Glenoid Labrum Glenoid Ligament is a fibrocartilaginous rim attached around the margin of the Glenoid cavity in the Shoulder Blade. High velocity and forceful movements of the arm such as those involved in pitching a baseball or serving a tennis ball can produce extreme forces across the shoulder.

Three distinct variations occur in over 10 of patients. SHOULDER PAIN The synovial membrane capsule and ligaments of the shoulder joint are innervated by the axillary nerve and the suprascapular nerve. The thickened middle GHL should not be confused with a displaced labrum.

The glenoid labrum glenoid ligament is a fibrocartilaginous rim attached around the margin of the glenoid cavity in the shoulder blade. The labrum is a cup-shaped rim of cartilage that lines and reinforces the ball-and-socket joint of the shoulder. Another mechanism of labral damage involves overhead sports such as volleyball baseball raquetball etc.

The shoulder joint is considered a ball and socket joint. Indications for imaging of the shoulder have. It helps provide stability to the shoulder by deepening the socket and serving as a firm attachment point for the ligaments that connect the humerus to the glenoid.

This gives the labrum an appearance in some ways like a meniscus of the knee. However in bony terms the socket the glenoid fossa of the Scapula is quite shallow and small covering only a third of the ball the head of. A cordlike middle glenohumeral ligament without tissue at the anterosuperior labrum.

Glenoid labrum a fibrocartilaginous ridge surrounding the glenoid cavity. Providing feedback to the body about the shoulders movement. Shoulder Anatomy and Normal Variants The shoulder joint is functionally and structurally complex and is composed of bone hyaline cartilage labrum ligaments capsule tendons and muscles.

Superior labrum anterior to posterior SLAP tears or lesions. For a number of reasons outlined in this meta post we can not and will not give medical advice. The labrum also serves as the attachment of a major tendon in the shoulder the biceps tendon.

The anterior labrum is absent in the 1-3 oclock position and there is a thickened middle GHL. The shoulder is primarily a ball and socket joint made up of the humerus ball and the glenoid socket. In the healthy state the humerus sits on the glenoid similar to the way a golfball rests on a tee.

Bankart lesions or tears. The joint is sensitive to pain pressure excessive traction and distension. With regard to building muscular support for the labrum it may be wise to seek the advice of a doctor or licensed physiotherapist.

The Shoulder Joint is considered as a ball and socket joint. Clinicans may reverse the 3 oclock and 9 oclock for left shoulder describing 3 oclock at the back. It serves several purposes which include.

The labrum is a rim of cartilage that surrounds the socket of the shoulder joint. Anatomy of Shoulder Labrum Tears The shoulder is a ball-and-socket joint composed of the upper head of the humerus ball and a pocket-shaped bone known as the glenoid socket. Anatomy of the Shoulder Labrum.

The labrum surrounding the shoulder socket is called the the glenoid labrum. A labral tear occurs when the cartilage is torn. The labrum is a thick fibrous ring that surrounds the glenoid.

The labrum is a ring of fibrous cartilage surrounding the glenoid which helps in stabilizing the shoulder joint. Rotator cuff muscles surround the shoulder joint attaching to the tuberosities of the humerus whilst also fusing with the joint capsule. The shoulder joint is a ball and socket joint.

It links the trunk to the upper limb and plays an important biomechanical role in daily activities. The labrum has an attachment to the biceps muscle that begins within the shoulder joint. A ball at the top of the upper arm bone the humerus fits neatly into a socket called the glenoid which is part of the shoulder blade scapula.

It should always be possible to trace the middle GHL upwards to the glenoid rim and downwards to the humerus. An isolated sublabral foramen A sublabral foramen with a cord-like middle glenohumeral ligament. 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.

Improving the stability of the shoulder joint by deepening the socket. The labrum in the superior half of the joint typically attaches to the edge of the glenoid via strong collagen fibers In the upper half of the glenoid it is very common for there to be no attachment of the labrum to the articular cartilage 5.

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