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KMID : 0361620130480050359
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Journal of the Korean Orthopaedic Association
2013 Volume.48 No. 5 p.359 ~ p.365
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Structural Analysis of Proximal Humerus in Korean
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Yoo Jeong-Hyun
Chung Soo-Tae
Jo Byung-Chae
Hyung Jae-Won
Paik Doo-Jin
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Abstract
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Purpose: Third generation shoulder arthroplasty is widely performed nowadays; however, few studies on the anatomy of the proximal humerus in the Korean population have been reported. The authors have attempted to review the anatomy of the proximal humerus.
Materials and Methods: The study sample consisted of 100 humeri of patients with a mean age of 48 years (range of 17 to 83 years) who underwent computed tomography imaging between January 2009 and October 2011 at Myongji Hospital. Diameter of the articular surface, head thickness, radius of curvature, head inclination, head to tuberosity height, bicipital groove-shaft angle, lateral angle, medial offset and posterior offset were analyzed. Results were compared depending on age and gender.
Results: Mean values of diameter of the articular surface was 42.70±3.57 mm, head thickness was 14.3±2.0 mm, and radius of curvature was 22.50±1.97 mm; these three variables showed significant sex differences. Head inclination was measured as 130.00±4.28 degrees, head to tuberosity height was 7.50±0.99 mm, bicipital groove-shaft angle was 6.60±0.92 degrees, and lateral angle was 163.40±4.05 degrees. Mean medial and posterior offset were 5.2±2.1 mm and 3.1±1.8 mm, respectively.
Conclusion: Based on the results of this study, the measurement values of Korean humeri can be used in design of the arthroplasty prosthesis, and this will lead to more accurate anatomical reconstruction of the shoulder joint.
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KEYWORD
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Korean, proximal humerus, anatomy, shoulder arthroplasty
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