Hamstring Strain Ultrasound Case Series: Dominant Semitendinosus Injuries in National Collegiate Athletic Association Division I Athletes

Author:

Hassid Brandon V.1,Warrick Alexandra E.1,Ray Jeremiah W.2

Affiliation:

1. Department of Physical Medicine and Rehabilitation, University of California Davis School of Medicine, Sacramento

2. Sports Medicine, Hoag Physician Partners, Foothill Ranch, CA

Abstract

Authors of previous studies of patients with acute hamstring strains have reported injury to the biceps femoris and semitendinosus (ST) in 50% to 100% and 0% to 30%, respectively. This retrospective case series of hamstring injuries in National Collegiate Athletic Association Division I collegiate athletes exhibited an injury pattern on ultrasound imaging that differed from what would be expected based on prior literature. We examined ultrasound images of 38 athletes with acute hamstring strains for injury location (proximal muscle, proximal myotendinous junction, midportion of muscle, distal muscle) and affected muscles (biceps femoris, ST, or semimembranosus). Twenty-six athletes (68.4%) injured the ST, and 9 athletes (23.7%) injured the biceps femoris long head. Most athletes (23, 60.5%) injured the proximal portion of the muscle or myotendinous junction. Though this study had many limitations, we demonstrated more frequent involvement of the ST and less frequent involvement of the biceps femoris than reported in the literature.

Publisher

National Athletic Trainers' Association

Reference27 articles.

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2. The Football Association Medical Research Programme: an audit of injuries in professional football—analysis of hamstring injuries;Woods,2004

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4. Identifying the time of occurrence of a hamstring strain injury during treadmill running: a case study;Heiderscheit,2005

5. Acute first-time hamstring strains during high-speed running: a longitudinal study including clinical and magnetic resonance imaging findings;Askling,2007

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