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Skeletal Radiol. 1996 Oct;25(7):629-34.

MR arthrography of elbow: evaluation of the ulnar collateral ligament of elbow.

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  • 1Department of Radiology, Osaka University Medical School, Japan.

Abstract

OBJECTIVE:

The purpose of this study was to evaluate ulnar collateral ligament (UCL) injury of the elbow in throwing athletes by MRI and MR arthrography.

DESIGN:

Ten elbows of throwing athletes were examined on both plain MRI and MR saline arthrography and the injuries subsequently surgically proven. Spin-echo (SE) T1-weighted and fast SE T2-weighted coronal images were obtained.

RESULTS:

The UCL was unclear in all ten cases on T1-weighted MRI. In five cases an avulsion fracture was also found on T1-weighted MRI. On T2-weighted MRI, abnormal high-intensity areas were identified in or around the UCL. On T2-weighted MR arthrography images, extracapsular high-intensity areas, which represent extracapsular leakage, were found in four of five cases with avulsion fracture. At surgery, all these four cases showed avulsion fractures with instability; the other case had a fracture but it was stable and adherent to the humerus. On T2-weighted MR arthrography images, an extracapsular high-intensity area was found in one of the five cases without avulsion fracture. At surgery this patient had a complete tear of the UCL itself.

CONCLUSION:

MR arthrography provided additional information for evaluating the degree of UCL injury.

PMID:
8915046
[PubMed - indexed for MEDLINE]
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