No association between fibrosis on magnetic resonance imaging at return to play and hamstring reinjury risk

The American Journal of Sports Medicine
Gustaaf ReurinkMario Maas

Abstract

Connective tissue scar (fibrosis) is a common finding on magnetic resonance imaging (MRI) after recovery from acute hamstring injuries. Fibrosis has been suggested as a predisposing factor for reinjury, but evidence from clinical studies is lacking. The aim of this study was to examine the association between the presence of fibrosis on MRI at return to play after an acute hamstring injury and the risk of reinjury. The hypothesis was that fibrous tissue on MRI was associated with an increased reinjury risk. Cohort study; Level of evidence, 3. Magnetic resonance images were obtained from 108 consecutive athletes with modified Peetrons classification grade 1 or 2 hamstring injuries within 5 days of injury and within 7 days of return to play. The presence and extent of abnormally low signal intensity in the intramuscular tissue on MRI, suggestive of fibrosis, were assessed on both T1- and T2-weighted images. Reinjuries were recorded over a 1-year follow-up period. The association between fibrosis and reinjury risk was analyzed with a Cox proportional hazards model. The MRIs of the initial injury showed 45 (43%) grade 1 and 63 (57%) grade 2 injuries. Median time of return to play was 30 days (interquartile range [IQR], 22-42 days)....Continue Reading

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Citations

Feb 22, 2017·Radiology·Ali GuermaziMichel D Crema
Sep 23, 2016·The Journal of Bone and Joint Surgery. American Volume·Brian NoehrenBruce Damon
Mar 10, 2017·Medicine and Science in Sports and Exercise·Jurdan MendiguchiaAlberto Mendez-Villanueva
Mar 16, 2017·British Journal of Sports Medicine·Gustaaf Reurink
Mar 2, 2017·British Journal of Sports Medicine·Mattia ZambaldiAlison Rushton
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Mar 6, 2017·British Journal of Sports Medicine·Moniek van HeumenGustaaf Reurink
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Oct 8, 2020·Insights Into Imaging·Jaime Isern-KebschullGil Rodas
Aug 16, 2021·Journal of Bodywork and Movement Therapies·Tomonori KawaiItsumu Bito

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NCT01812564

Software Mentioned

SPSS

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