A Morphological Study of Suprascapular Notch and Incidence of Ossification of Superior Transverse Scapular Ligament in South Indian Dry Scapulae
Introduction: The suprascapular notch is converted into suprascapular foramen by bridging of superior transverse scapular ligament (STSL) on its edges. The structures related to STSL are the suprascapular vessel which passes above and suprascapular nerve which passes below the ligament to reach the supraspinous fossa. The anterior coracoscapular ligament (ACSL) is present below the suprascapular ligament. Ossification of both STSL and ACSL leads to formation of double suprascapular foramen.
Aim: The aim of the present study is to know the incidence of suprascapular foramen and prevalence of different types of suprascapular notch in south Indian dry scapula.
Method and Result: 250 scapulae were examined in the present study. Out of which, 23 (9.2%) showed complete ossification and 13 (5.2%) showed partial ossification of STSL. Presence of both complete and partial foramen was observed in one of the right sided scapula.
Conclusion: The knowledge of variation in shape of suprascapular notch and ossification of both STSL and ACSL is of great concern for anatomist, neurosurgeon, radiologist and orthopaedician to understand the cause of suprascapular nerve entrapment syndrome and for better management of those cases.
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