S J Pomeranz1, R S Heidt. 1. Department of Radiology, Christ Hospital, Cincinnati, OH 45219.
Abstract
PURPOSE: To correlate morphologic and magnetic resonance (MR) imaging findings in hamstring injury with short-term prognosis and convalescence interval (CI). MATERIALS AND METHODS: A retrospective study of 14 professional athletes with hamstring injury was performed. The injuries were categorized according to muscle group involved, percentage of cross-sectional area affected, location, and signal intensity on T1- and T2-weighted spin-echo images. RESULTS: Longer CIs (> 6 weeks) were seen in injuries with complete transection, greater than 50% cross-sectional muscle involvement, ganglionlike fluid collections (long T1 and T2), hemorrhagelike signal intensity (short T1 and T2), distal myotendinous junction tears, and deep muscular tears. Shorter CIs (< 5 weeks) were seen in superficial muscle injuries and muscle belly injuries that involved small cross-sectional areas of the muscle. CONCLUSION: Prediction of CI for high-performance athletes with complete hamstring injury may be accomplished with use of MR imaging and poor prognostic factors.
PURPOSE: To correlate morphologic and magnetic resonance (MR) imaging findings in hamstring injury with short-term prognosis and convalescence interval (CI). MATERIALS AND METHODS: A retrospective study of 14 professional athletes with hamstring injury was performed. The injuries were categorized according to muscle group involved, percentage of cross-sectional area affected, location, and signal intensity on T1- and T2-weighted spin-echo images. RESULTS: Longer CIs (> 6 weeks) were seen in injuries with complete transection, greater than 50% cross-sectional muscle involvement, ganglionlike fluid collections (long T1 and T2), hemorrhagelike signal intensity (short T1 and T2), distal myotendinous junction tears, and deep muscular tears. Shorter CIs (< 5 weeks) were seen in superficial muscle injuries and muscle belly injuries that involved small cross-sectional areas of the muscle. CONCLUSION: Prediction of CI for high-performance athletes with complete hamstring injury may be accomplished with use of MR imaging and poor prognostic factors.
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