Supraglenoid_tubercle

Supraglenoid tubercle

Supraglenoid tubercle

Region of the scapula from which the long head of the biceps brachii muscle originates

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]

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Clinical relevance

Biceps tendonitis

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

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

  • Position of supraglenoid tubercle (shown in red). left scapula.
  • Still image. Left scapula, lateral view.
  • Position of supraglenoid tubercle (shown in red). Animation.
  • Still image.

See also

References

Public domain This article incorporates text in the public domain from page 205 of the 20th edition of Gray's Anatomy (1918)

  1. [1]
    Zwingenberger, Allison; Benigni, Livia; Lamb, Christopher R. (2015-01-01), Mattoon, John S.; Nyland, Thomas G. (eds.), "Chapter 14 - Musculoskeletal System", Small Animal Diagnostic Ultrasound (Third Edition), St. Louis: W.B. Saunders, pp. 517–540, doi:10.1016/b978-1-4160-4867-1.00014-3, ISBN 978-1-4160-4867-1, retrieved 2020-10-25
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    DeCamp, Charles E.; Johnston, Spencer A.; Déjardin, Loïc M.; Schaefer, Susan L. (2016-01-01), DeCamp, Charles E.; Johnston, Spencer A.; Déjardin, Loïc M.; Schaefer, Susan L. (eds.), "10 - The shoulder joint", Brinker, Piermattei and Flo's Handbook of Small Animal Orthopedics and Fracture Repair (Fifth Edition), W.B. Saunders, pp. 260–297, doi:10.1016/b978-1-4377-2364-9.00019-7, ISBN 978-1-4377-2364-9, retrieved 2020-10-25
  3. [3]
    brainSPIN. "Structure Detail". anatomyEXPERT. Retrieved 2012-03-04.
  4. [4]
    "Biceps Tendonitis". Eorif.com. Retrieved 2012-03-04.
  5. [5]
    Mitra, Raj; Nguyen, Andrew; Stevens, Kathryn J. (2011). "Fluoroscopically Guided Supraglenoid Tubercle Steroid Injections for the Management of Biceps Tendonitis". Pain Practice. 11 (4): 392–6. doi:10.1111/j.1533-2500.2010.00424.x. PMID 21114615. S2CID 28274754.
  6. [6]
    Roush, James K. (2006-01-01), Birchard, Stephen J.; Sherding, Robert G. (eds.), "Chapter 102 - Fractures of the Shoulder", Saunders Manual of Small Animal Practice (Third Edition), Saint Louis: W.B. Saunders, pp. 1071–1076, doi:10.1016/b0-72-160422-6/50104-2, ISBN 978-0-7216-0422-0, retrieved 2020-10-25
  7. [7]
    DeCamp, Charles E.; Johnston, Spencer A.; Déjardin, Loïc M.; Schaefer, Susan L. (2016-01-01), DeCamp, Charles E.; Johnston, Spencer A.; Déjardin, Loïc M.; Schaefer, Susan L. (eds.), "9 - Fractures of the scapula", Brinker, Piermattei and Flo's Handbook of Small Animal Orthopedics and Fracture Repair (Fifth Edition), W.B. Saunders, pp. 251–259, doi:10.1016/b978-1-4377-2364-9.00018-5, ISBN 978-1-4377-2364-9, retrieved 2020-10-25
  8. [8]
    McIlwraith, C. Wayne; Nixon, Alan J.; Wright, Ian M. (2015-01-01), McIlwraith, C. Wayne; Nixon, Alan J.; Wright, Ian M. (eds.), "Chapter 13 - Bursoscopy", Diagnostic and Surgical Arthroscopy in the Horse (Fourth Edition), Mosby, pp. 387–406, doi:10.1016/b978-0-7234-3693-5.00013-8, ISBN 978-0-7234-3693-5, retrieved 2020-10-25
  9. [9]
    Nelson, Brad B.; Goodrich, Laurie R. (2014-01-01), Hinchcliff, Kenneth W.; Kaneps, Andris J.; Geor, Raymond J. (eds.), "18 - Elbow and Shoulder", Equine Sports Medicine and Surgery (Second Edition), W.B. Saunders, pp. 343–365, doi:10.1016/b978-0-7020-4771-8.00018-1, ISBN 978-0-7020-4771-8, retrieved 2020-10-25
  10. [10]
    Fortier, Lisa A. (2019-01-01), Auer, Jörg A.; Stick, John A.; Kümmerle, Jan M.; Prange, Timo (eds.), "Chapter 98 - Shoulder", Equine Surgery (Fifth Edition), W.B. Saunders, pp. 1699–1709, doi:10.1016/b978-0-323-48420-6.00098-3, ISBN 978-0-323-48420-6
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