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Journal of the Korean Shoulder and Elbow Society 1999;2(2):151-156.
Published online December 30, 1999.
Humeral, Glenoid Retroversion and Bicipital Groove Distance of the Normal Korean A
Jin Sub Kim, Jung Han Yoo, Joo Hyuk Park
Department of Orthopaedic Surgery, School of Medicine, Hallym University
정상 한국 성인의 상완골과 관절와의 후경각 및 개방적 수술의 비교
김진섭, 유정한, 박주혁
한림대학교 의과대학 강남성심병원 정형외과학교실
: Average humeral head retroversion was showed significant wide range from literatures based on variable measuring technique, We performed computed tomography(CT) study in an effort to define the specific anatomy relationships and evaluate their use. Materials and Methods : Two hundreds shoulders and distal humeri CT scan with no known pathology were examined. The study population was divided to 10 groups by gender and age (from third to seventh decade). The number of each group was twenty. Retroversion of proximal humerus and glenoid were measured using the lines that were connected the central axis of humeral head, central points of the humeral epicondyles paralleling to the trochlea, paralled to the glenoid surface, midpoint between the transverse glenoid diameter and medial edge of the scapular. We also measured the bicipital groove distance from the humeral central axis and scapulothoracic angle. Results: Retroversion of proximal humerus was highly variable, ranging in this study from 13 to 58 degrees(mean 28.73) These values correlated with sex, not age, height or hand dominance. Glenoid retroversion at the inferior sections showed average 1.3 degree, did not signigicant differences. The central axis was an average of l0mm(5-15mm) posterior to the posterior margin of the bicipital groove. Scapulothoracic angle was average 43 degrees(25-53 degrees) Conclusion: Anatomical reconstruction of retroversion angle should be individualized and bicipital groove could be useful as landmark for the lateral fin of the prosthesis to be positioned an average of 10mm posteriorly.
Key Words: Shoulder; Normal variation; Retroversion; Bicipital groove distance
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