| Supraglenoid tubercle | |
|---|---|
Left scapula. Lateral view. Supraglenoid tubercle labeled in red.
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Bones of left shoulder. Supraglenoid tubercle shown in red.
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| Details | |
| Identifiers | |
| Latin | tuberculum supraglenoidale |
| TA98 | A02.4.01.020 |
| TA2 | 1163 |
| FMA | 23263 |
| Anatomical terms of bone | |
The supraglenoid tubercle is a region of the scapula from which the long head of the biceps brachii muscle originates.[1][2] It is a small, rough projection superior to the glenoid cavity near the base of the coracoid process. The term supraglenoid is from the Latin supra, meaning above, and glenoid, meaning socket or cavity.[3]
Biceps tendonitis originates on the long head of the biceps brachii at the supraglenoid tubercle in 30% of cases. The main symptom is generally anterior biceps instability, but the disease can also be characterized by chronic anterior shoulder pain which radiates towards the lateral part of the elbow.[4] In cases of biceps tendinitis, steroids can be injected fluoroscopically at the supraglenoid tubercle to reduce pain associated with the pathology.[5]
The supraglenoid tubercle ossifies separately from the rest of the scapula, so may not be as strong as the rest of the bone. It can be pulled off (avulsed),[6] often after an excessively strong contraction of the biceps brachii.[7] This may also cause a fracture of the surrounding parts of the scapula, particularly the glenoid cavity.[8] This may also occur in horses.[9] This type of bone fracture is quite rare.[10]
This article incorporates text in the public domain from page 205 of the 20th edition of Gray's Anatomy (1918)
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| Shoulder girdle, clavicle |
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| Scapula |
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| Humerus |
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| Forearm |
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| Hand |
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