Thesupraglenoid tubercle is a region of thescapula from which the long head of thebiceps brachii muscle originates.[1][2] It is a small, rough projection superior to theglenoid cavity near the base of thecoracoid process. The term supraglenoid is from the Latinsupra, meaning above, andglenoid, meaning socket or cavity.[3]
Bicepstendonitis originates on thelong 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 anteriorshoulder pain which radiates towards the lateral part of theelbow.[4] In cases of biceps tendinitis,steroids can be injectedfluoroscopically at the supraglenoid tubercle to reduce pain associated with the pathology.[5]
The supraglenoid tubercleossifies 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 strongcontraction of the biceps brachii.[7] This may also cause afracture of the surrounding parts of the scapula, particularly theglenoid cavity.[8] This may also occur inhorses.[9] This type of bone fracture is quite rare.[10]
^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,ISBN978-1-4377-2364-9, retrieved2020-10-25
^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,ISBN978-1-4377-2364-9, retrieved2020-10-25
^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,ISBN978-0-323-48420-6
This article incorporates text in thepublic domain frompage 205 of the 20th edition ofGray's Anatomy(1918)
