MRI appearance does not change in the first 7 days after acute hamstring injury—a prospective study

BackgroundThe optimal timing of MRI following acute hamstring injury is not known and is mainly based on expert opinions.AimsTo describe the day-to-day changes in the extent of oedema and investigate the optimal timing for detection of fibre disruption on MRI following acute hamstring injuries.Study...

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Bibliographic Details
Published in:British journal of sports medicine 2017-07, Vol.51 (14), p.1087-1092
Main Authors: Wangensteen, Arnlaug, Bahr, Roald, Van Linschoten, Robbart, Almusa, Emad, Whiteley, Rodney, Witvrouw, Erik, Tol, Johannes L
Format: Article
Language:English
Subjects:
Adult
Athletes
Athletic Injuries - diagnostic imaging
Edema
Edema - diagnostic imaging
Hospitals
Humans
Leg Injuries - diagnostic imaging
Magnetic Resonance Imaging
Male
Medicine
Middle Aged
Muscle, Skeletal - diagnostic imaging
Muscle, Skeletal - injuries
Musculoskeletal system
Pain
Patient assessment
Professional soccer
Prospective Studies
Soft Tissue Injuries - diagnostic imaging
Sports injuries
Sports medicine
Studies
Thigh - diagnostic imaging
Thigh - injuries
Time Factors
Young Adult
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Summary:BackgroundThe optimal timing of MRI following acute hamstring injury is not known and is mainly based on expert opinions.AimsTo describe the day-to-day changes in the extent of oedema and investigate the optimal timing for detection of fibre disruption on MRI following acute hamstring injuries.Study designProspective, descriptive study.MethodsWe performed standardised MRI (1.5T) ≤1 day after injury in male athletes with acute hamstring injury. If initial MRI revealed positive signs of injury (increased signal intensity on fluid sensitive sequences), consecutive MRIs were obtained daily throughout the subsequent week (ie, 7 times). The MRI parameters (day 1–7) were scored by a single radiologist using a standardised scoring form. The day-to-day changes in the extent of oedema (distance from tuber, craniocaudal length, mediolateral width and anteroposterior depth) and the presence and extent of fibre disruption (tear) were assessed with descriptive statistics and repeated measures using analysis of variance of log-transformed data. The overall main effect for time was reported with a significance level set at p
ISSN:0306-3674
1473-0480
DOI:10.1136/bjsports-2016-096881