Supraglenoid tubercle

Supraglenoid Tubercle

The Supraglenoid Tubercle is a part of the scapula, or shoulder blade, in the human body. It is a small bony projection located on the superior margin of the glenoid cavity. This tubercle serves as the attachment point for the long head of the biceps brachii muscle.

Etymology

The term "Supraglenoid" is derived from the Latin words "supra," meaning above, and "glenoid," referring to the glenoid cavity of the scapula. "Tubercle" is a term used in anatomy to describe a small, rounded projection or protuberance on a bone.

Anatomy

The Supraglenoid Tubercle is located on the superior margin of the glenoid cavity, which is the part of the scapula that forms the ball and socket joint with the humerus. This tubercle is the point of attachment for the long head of the biceps brachii muscle, one of the major muscles of the upper arm.

Clinical Significance

Injuries or abnormalities of the Supraglenoid Tubercle can affect the function of the biceps brachii muscle, potentially leading to weakness or loss of function in the arm. Such conditions may be diagnosed through physical examination or imaging studies such as MRI.

Related Terms

• Scapula
• Glenoid cavity
• Long head of the biceps brachii
• Humerus

See Also

• Anatomy of the scapula
• Biceps brachii muscle
• Shoulder joint

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  Lateral view of left scapula highlighting the supraglenoid tubercle
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  Supraglenoid tubercle of left scapula
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  Animation showing the supraglenoid tubercle of left scapula
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  Supraglenoid tubercle of left scapula
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  Animation of supraglenoid tubercle of scapula
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  Supraglenoid tubercle of scapula