An anatomical study of the superior transverse scapular ligament of Jining population

Morphometry and Contents of the Suprascapular Notch with Potential Clinical Implications: Α Cadaveric Study

“…Traction injuries, direct trauma, compression by ganglion cysts or tumors, variations in the morphology of neighboring soft tissues, or even a hypertrophied subscapular muscle may contribute to its development. 1,8,14,15 Additionally, suprascapular neuropathy development has been associated with autoinflammatory diseases, specifically rheumatoid arthritis and systematic lupus erythematosus. 18,19 SSN neuropathy has been described as a symptomatic syndrome related with weakness of the arm, difficulty in external rotation, and abduction, followed by atrophy of the infra-and supraspinatus muscles and a deep, dull, and chronic pain in the posterior and lateral aspects of the arm and shoulder, with occasional radiation down to the arm or up into the neck.…”

“…However, the courses of the associated suprascapular vessels are subject to significant variation. [7][8][9] The suprascapular vein starts in the infraspinatus fossa, after passing through the spinoglenoid notch enters the supraspinous fossa, and following ascends to the SN. It most commonly crosses the SN running under the STSL along with the SSN and then travels with the suprascapular artery and finally empties into the external jugular vein.…”

“…5,14 Suprascapular neuropathy is a symptomatic syndrome, affecting mainly patients under the age of 35 years, presenting as dull with chronic pain of the shoulder associated with weakness of the arm. 1,8,14 It has been estimated that of all shoulder pains in the whole population, 1 to 2% are due to this syndrome, while in international-level high-performance volleyball players, its occurrence can be as high as 33%. 1,2,5 Many factors have been associated with the etiopathogenesis of suprascapular neuropathy.…”

“…Moreover, repetitive irritation in overhead activities, continuous traction secondary to a rotator cuff tear, or inflammation of the nerve can all result in neuropathy through the "sling effect" which means pressure of a sharply shaped SN's border on the SSN. 1,6,8,15,16 Ossification of the STSL has also been implicated with the development of SSN entrapment syndrome. 8,15 In the present study, we describe our findings after dissection of 31 fresh-frozen cadaveric shoulders.…”

“…1,6,8,15,16 Ossification of the STSL has also been implicated with the development of SSN entrapment syndrome. 8,15 In the present study, we describe our findings after dissection of 31 fresh-frozen cadaveric shoulders. Anatomical variations, middle-transverse diameter of the SN, and ossification of the STSL were recorded.…”