Anatomic Study of Subcoracoid Morphology in 418 Shoulders: Potential Implications for Subcoracoid Impingement

Orthopaedic Journal of Sports Medicine
Anthony J DugarteLutul D Farrow

Abstract

Subcoracoid impingement has been implicated as a cause of anterior shoulder pain and subscapularis tendon tears. The purpose of this study was to evaluate the bony anatomy of the coracoid process and the subcoracoid space. We hypothesized that age-related changes that may contribute to subcoracoid impingement occur in the subcoracoid space. Descriptive laboratory study. In total, 418 skeletal shoulder specimens were included in this study. We utilized 214 shoulders from a young cohort (25-35 years of age) and 204 shoulders from an older cohort (>55 years of age) for comparison. We evaluated several morphological characteristics of the coracoid process and the subcoracoid space: coracoid width, coracoid shape, coracoid thickness, and subcoracoid distance. Each coracoid was observed for the presence of spurring or other morphological changes. The mean anteroposterior (AP) thickness of the coracoid tip was 7.9 and 9.4 mm in our young female and male cohorts, respectively, while the mean AP thickness was 8.1 and 9.7 mm in our older female and male cohorts, respectively. The coracoid tip was hooked in 31 of 108 young female shoulders compared with 55 of 102 older female shoulders, and the coracoid tip was hooked in 25 of 106 young m...Continue Reading

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Citations

Dec 16, 2019·Orthopaedics & Traumatology, Surgery & Research : OTSR·Joong-Bae SeoJaesung Yoo
Dec 17, 2020·The Journal of the American Academy of Orthopaedic Surgeons·Michael J McKernanSalvatore J Frangiamore
May 7, 2021·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Sizheng ZhuHong Chen

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