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Abstract

Background

There has been no research examining the magnetic resonance imaging findings, and in turn the prognosis, for a series of acute quadriceps muscle strains.

Hypothesis

The magnetic resonance imaging findings of acute quadriceps muscle strain injuries are helpful in predicting their prognosis.

Study Design

Causal-comparative study.

Method

Forty professional players of Australian Rules football were followed over 3 years. Magnetic resonance imaging examinations were performed within 24 to 72 hours of muscle-strain injury. Imaging features of muscle strain injury included the anatomical location, size (cross-sectional area and length), and site (proximal, middle, or distal). The time from injury to return to full training was termed the rehabilitation interval.

Results

25 clinical quadriceps muscle strain injuries occurred, with 15 cases involving the rectus femoris. The rectus femoris injuries could be further categorized into cases with straining about the central tendon (n = 7, mean rehabilitation interval = 26.9 days) or cases with straining in the periphery (n = 8, mean rehabilitation interval = 9.2 days). Six cases involved one of the vastus muscles (mean rehabilitation interval = 4.4 days). Three players had normal magnetic resonance imaging examinations (mean rehabilitation interval = 5.7 days).

Conclusions

The rectus femoris–central tendon injury is the red flag diagnosis associated with a significantly longer rehabilitation interval.

Clinical Relevance

Magnetic resonance imaging is helpful in predicting the prognosis for acute quadriceps strains.

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Information

Published In

Article first published: April 2004
Issue published: April 2004

Keywords

  1. central tendon
  2. rehabilitation interval

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© 2004 American Orthopaedic Society for Sports Medicine.
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History

Published online: April 1, 2004
Issue published: April 2004
PubMed: 15090389

Authors

Affiliations

Thomas M. Cross, MBBS, Dip Child Health
North Syndey Orthopaedic & Sports Medicine Centre, Sydney Sports Medicine Centre, Olympic Park, Crows Nest, North Sydney, Australia
Nathan Gibbs, MBBS, FACSP, Grad Dip Sports Sc
Sydney Swans Football Club, Moore Park, Australia
Michael T. Houang, MBBS, FANZCR
Sydney CT and MR, Australia
Matthew Cameron, BAppSci (Physio), Post Grad Dip (Sports Physio)
Sydney Swans Football Club, Moore Park, Australia

Notes

*
North Sydney Orthopaedic & Sports Medicine Centre, 272 Pacific Highway, Crows Nest, NSW, 2065, Sydney, Australia

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