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MRI of HAGL Lesions: Four Arthroscopically Confirmed Cases of False-Positive Diagnosis

¹ Department of Orthopaedics, University of Pennsylvania, Philadelphia, PA.
² Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, PA.
³ Present address: Department of Radiology, Lucile Packard Children's Hospital, Stanford University, Palo Alto, CA.
⁴ University of Pennsylvania School of Medicine, Philadelphia, PA.
⁵ Department of Orthopaedic Surgery, The Children's Hospital of Philadelphia, University of Pennsylvania, Wood Bldg., Floor 2, 34th St. and Civic Center Blvd., Philadelphia, PA 19104-4399.

OBJECTIVE. The purpose of this article is to present the cases of four consecutive patients with preoperative MR diagnosis of humeral avulsion of the glenohumeral ligament (HAGL) who had no evidence of HAGL at arthroscopy.

CONCLUSION. These four cases suggest that the diagnosis of HAGL should be reserved for arthroscopy and illustrate the difficulty in distinguishing HAGL from other abnormalities of the inferior glenohumeral ligament complex with MRI. Thus, MRI findings classically associated with HAGL should be more broadly described as defects of the inferior glenohumeral ligament complex. This terminology more accurately describes the abnormalities of the inferior glenohumeral ligament complex that may be depicted by MRI.

Keywords: anterior shoulder instability • arthroscopy • humeral avulsion of the glenohumeral ligament (HAGL) • MRI • shoulder dislocation

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This article has been cited by other articles:

				D. T. Murphy, G. C. Koulouris, A. G. Gopez, and E. C. Kavanagh Humeral Avulsion of the Glenohumeral Ligament Am. J. Roentgenol., July 1, 2009; 193(1): W74 - W75. [Full Text] [PDF]

				J. S. Melvin, J. D. MacKenzie, B. J. Sennett, and L. Wells Reply Am. J. Roentgenol., July 1, 2009; 193(1): W76 - W76. [Full Text] [PDF]