Morphometric Anatomy of Acromion Process: An Observational Study

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Morphometric Anatomy of Acromion Process: An Observational Study

Journal Title: International Journal of Anatomy Radiology and Surgery - Year 2018, Vol 7, Issue 2

Abstract

Introduction: The acromion process is the elongated and flattened process of scapular spine. The scapular morphometry is an important factor related to impingement syndrome of the shoulder joint. Acromion process is classified according to the standard Bigliani’s classification into Type I, II and III. Aim: The aim of the study is to correlate the variations of acromion anatomy in orthopedic surgery of the shoulder joint. Materials and Methods: This was an observational study conducted on 297 adult human scapulae (145 rights and 152 left) of unknown age and sex. Length, breadth and thickness of the acromion process were measured with by Vernier caliper. The distances were measured from the tip of the acromion process to the supra glenoid tubercle and to the tip of the corocoid process. Results: The acromion process was classified into Type 1 (flat) Type 2 (curved) Type 3 (hooked) as per the surface curvature. The average length, breadth and thickness of acromion process on the right and left scapulae were 41.72±5.20 mm, 21.42±3.06 mm, 6.68±1.76 mm and 38.97±4.81 mm, 21.57±2.73 mm, 6.59±1.67 mm respectively. The acromio-coracoid distance, acromio-glenoid distance, height of coraco-acromial arch and angle of acromial inclination in degrees on the right and left side were 37.49±4.87 mm, 26.39±2.64 mm, 21.01±4.06 mm, 43.2±5.94° and 37.23±4.48 mm, 24.20±3.14 mm, 19.52±3.00 mm, 54.86±7.36° respectively. Conclusion: Various anatomical measurements of acromion process will guide the orthopaedic surgeons during shoulder joint surgery and also reveals possible evolutionary changes during the adoption of bipedal gait in human beings in anthropology.

Authors and Affiliations

Tapasa Kumar Panigrahi, Dharma Niranjan Mishra

Keywords

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EP ID EP529855
DOI 10.7860/IJARS/2018/35971:2387
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