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Address for Correspondence: Dr. Krishna Gopal, Associate Professor, Department of Anatomy, Sri Guru Ram Rai Medical College and Hospital, Patel Nagar, Dehradun. Uttaranchal, India. E-Mail: dr.krish2007@gmail.com Introduction: The scapula (shoulder blade) is a triangular flat bone that lies on the posterolateral aspect of the thorax. The scapula bears various angles namely superior, inferior, lateral, medial, acromial and coracoid angle. The three borders meet strategically to form the referenced three angles (lateral, superior, and inferior. Its lateral angle, truncated and broad, bears the glenoid cavity which articulates with the head of the humerus at the glenohumeral joint. The morphology of the glenoid cavity is highly variable. The glenoid rim presents a notch in its upper and front part Materials and Methods: This study included thorough observation of 120 dry human scapulae, 67 from left side and 53 from right side, obtained from department of Anatomy, Sri Guru Ram Rai Institute of medical and health sciences Dehradun following standard guidelines. All the metric and non metric parameters were observed and recorded in tabulated form. Results: The mean length of scapula of left side was observed as 127.35±12.35 and right side was 128.10±11.21.The total mean value for length of scapula was noted as 130.21±12.65 . The mean breadth of scapula was recorded as 96.98±7.62mm. The mean value of scapular index was listed as 68.47±3.98 . The mean of infraspinous length was recorded as 99.14±9.54 and the infraspinous index was 99.65±8.32.The mean AP glenoid diameter 1 was 24.54±2.65mm, the mean AP glenoid diameter 2 was 16.56±2.45mm and the mean AP glenoid diameter 3 was 17.09±2.75 The shape of the glenoid cavity was recorded as type 1(oval) 17.50%, Type2 (pear) 48.14%, Type3(inverted coma) and Type4(other). Conclusion: To summarize, the present study provides a base line data of different scapular dimensions on the left and right sides. Knowledge of the measurements and indices of various parameters of scapula such as length, width and various parameters of glenoid cavity can be used for comparative anatomy and also for defining the race.

MORPHOMETRIC EVALUATION OF GLENOID CAVITY AND OTHER DIMENSIONS OF DRY HUMAN SCAPULAE