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The subscapularis: anatomy, injury, and imaging

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Abstract

The subscapularis is the largest and most powerful of the rotator cuff muscles and fulfills an important role in glenohumeral movement and stability. The spectrum and implications of subscapularis muscle or tendon injury differ from injury to other rotator cuff components because of its unique structure and function. Diagnosing subscapularis injury is clinically difficult and assessment of subscapularis integrity may be limited during arthroscopy or open surgery. Diagnostic imaging plays an important part in diagnosing and evaluating the extent of subscapularis injury. The radiologist should be aware of the anatomy of the subscapularis, the variations in muscle or tendon injury, and the potential implications for treatment and prognosis.

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Acknowledgements

The authors thank Anne Phillips for her work on the illustrations.

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Authors and Affiliations

  1. Department of Radiology, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI, 48109-0302, USA

    Yoav Morag, David A. Jamadar, Qian Dong & Jon A. Jacobson

  2. Department of Orthopaedics, University of Michigan, 1500 E. Medical Center Drive, Ann Arbor, MI, 48109-0302, USA

    Bruce Miller

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  1. Yoav Morag
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Correspondence to Yoav Morag.

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Morag, Y., Jamadar, D.A., Miller, B. et al. The subscapularis: anatomy, injury, and imaging. Skeletal Radiol 40, 255–269 (2011). https://doi.org/10.1007/s00256-009-0845-0

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