AbstractIntroduction: In scapula, the acromium process projects forwards almost at right angles from the lateral end of the spine. The coracoacromial ligament lies between tip of acromian and coracoid process and it forms coraco-acromial arch. Below the arch thre is space it gives passage to the tendons of muscles forming musculo- rotator cuff. The morphometric study of the acromion process of the scapula is an important factor implicated in impingement syndrome of the shoulder joint. Methodology: This study was carried out on the 100 dry human scapulae of unknown age and sex, 50 were from the right side, and 50 were from the left. Measurements were taken using a vernier calliper and recorded in millimeters. Result: In this study shows the mean values of acromian length were 44.8mm. The acromian width mean values were 21.7mm.The acromian thickness was 5.7mm. The distances between acromian and coracoid processes were measured at two points. The distance taken from tip of the acromian process to tip of the coracoid process was found 36.5mm. The distance taken at the base of the coracoids to the tip of the acromian process mean value was 23.6mm. The acromio-glenoid distance observed 26,2mm. The three types of acromion process according to slope, flat was seen in 28 (28%), type II curved in 49 (49%) and type III hooked in 23(23%) of the total samples and also it was found the inferior surface of the acromian smooth in 74 (74%) and rough in 26 (26%) samples. Morphological shapes of the tip of the acromion were recorded as: cobra-shaped, square tip and intermediate-shaped Conclusion: Knowledge of the morphometeric values of scapula and acromian process is important for clinicians in understanding andcuring shoulder joint ailments.
Keywords: Scapula; Acromian Process; Morphometry.
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