Study of suprascapular notch converted into a foramen in adult human scapulae in Karnataka region

Abstract

Scapula is a triangular bone present in the back, which articulates with the humerus and clavicle forming the shoulder girdle. In the superior border of the scapula there is a notch called the suprascapular notch, through which the suprascapular nerve pass. The suprascapular nerve can be compressed by the ossified part of the transverse scapular ligament a cause for neuropathies.The present study was done on adult scapulae in department of Anatomy SUIMS & R.C. Shimoga, where the transverse scapular ligament [TSL] was ossified in 10 scapulae out of 127 adult dry scapulae [7.87%] studied of unknown sex. It was also noted that 6 out of 10 scapulae belonged to the right side & 4 to left side showing a slight preponderance to the right side. Incidence of the complete suprascapular foramen varies from one geographical region to other region, work nature of indivisuals and is variable with the samples collected by different workers for the study.The compresssion of the suprascapular nerve is an acquired neuropathy leading to neuromuscular deficits and decrease in the range of motion of the shoulder. Suprascapular nerve blocks are given in this region. The knowledge of this type of nerve compression is helpful for evaluation of patients with neurovascular deficits to orthopedicians, radiologists, anaesthetists and surgeons in their clinical practice.