Supraglenoid tubercle
| Supraglenoid tubercle | |
|---|---|
 Left scapula. Lateral view. Supraglenoid tubercle labeled in red. | |
| Error creating thumbnail: Bones of left shoulder. Supraglenoid tubercle shown in red. | |
| Details | |
| Identifiers | |
| Latin | tuberculum supraglenoidale |
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| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of bone [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
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]
Clinical relevance
[edit | edit source]Biceps tendonitis
[edit | edit source]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]
Avulsion
[edit | edit source]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]
Additional images
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Position of supraglenoid tubercle (shown in red). left scapula.
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Still image. Left scapula, lateral view.
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Position of supraglenoid tubercle (shown in red). Animation.
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Still image.
See also
[edit | edit source]References
[edit | edit source]Error creating thumbnail: This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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External links
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- lesson1bonesofpostshoulder at The Anatomy Lesson by Wesley Norman (Georgetown University)
- radiographsul at The Anatomy Lesson by Wesley Norman (Georgetown University) (xrayleftshoulder)
- Anatomy photo:03:os-0115 at the SUNY Downstate Medical Center
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