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Stress Distribution Patterns Across the Shoulder Joint in Gymnasts : A Computed Tomography Osteoabsorptiometry Study
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| Title: | Stress Distribution Patterns Across the Shoulder Joint in Gymnasts : A Computed Tomography Osteoabsorptiometry Study |
| Authors: | Momma, Daisuke Browse this author | | Iwamoto, Wataru Browse this author | | Endo, Kaori Browse this author | | Sato, Kazuki Browse this author | | Iwasaki, Norimasa Browse this author →KAKEN DB |
| Keywords: | gymnast | | shoulder | | CT osteoabsorptiometry | | stress distribution |
| Issue Date: | Nov-2020 |
| Publisher: | SAGE Publications |
| Journal Title: | Orthopaedic journal of sports medicine |
| Volume: | 8 |
| Issue: | 11 |
| Start Page: | 2325967120962103 |
| Publisher DOI: | 10.1177/2325967120962103 |
| Abstract: | Background: The distribution pattern of subchondral bone density is an indicator of stress distribution over a joint surface under long-term physiologic loading. The biomechanical characteristics of the articular surfaces of the shoulder joint in gymnasts can be determined by measuring this distribution pattern. Purpose: To evaluate the distribution of subchondral bone density across the shoulder joint in male collegiate gymnasts and to determine the effects of gymnastic activities on its articular surfaces under long-term loading conditions using computed tomography osteoabsorptiometry (CTOAM). Study Design: Descriptive laboratory study. Methods: CT image data were obtained from both shoulders of 12 asymptomatic male collegiate gymnasts (gymnast group; mean age, 19.4 years; range, 18-22 years) and 10 male collegiate volunteers (control group; mean age, 20.2 years; range, 18-22 years). The distribution pattern of subchondral bone density across the articular surfaces of each shoulder joint was assessed by CTOAM. Quantitative analysis was performed of the locations and percentages of high-density areas on the articular surface. Results: Stress distribution patterns over the articular surfaces differed between the gymnasts and the controls. In the gymnasts, high-density areas were detected on the posterosuperior articular surface of the humeral head and the anterosuperior and/or posterosuperior articular surface of the glenoid. Mean bone density was greater in the gymnasts than in the controls (P < .0001). Conclusion: Stress distribution over the articular surfaces of the shoulder joint was affected by gymnastic activities. Stress was concentrated over the superior part of the glenohumeral joint in male collegiate gymnasts. |
| Rights: | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/80158 |
| Appears in Collections: | 国際連携研究教育局 : GI-CoRE (Global Institution for Collaborative Research and Education : GI-CoRE) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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