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Updated: May 20, 2026
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An in vivo Rodent Model of Contraction-induced Injury and Non-invasive Monitoring of Recovery
Published on: May 11, 2011
Acute muscle strain injuries: a proposed new classification system
Otto Chan1, Angelo Del Buono, Thomas M Best
1Department of Radiology, The London Independent Hospital, 1 Beaumont Square, London, E1 4NL, UK.
Summary
This study proposes a new imaging-based classification for acute muscle strains, moving beyond the traditional grading system. The novel approach aims for more accurate anatomical definition and prognosis for athletes returning to sport.
Area of Science:
- Sports Medicine
- Radiology
- Orthopedics
Background:
- Traditional grading (I, II, III) of acute muscle strains lacks anatomical precision.
- Current classification systems do not reliably predict prognosis or return-to-sport timelines.
- Need for a more detailed and anatomically relevant classification system.
Purpose of the Study:
- To define and classify acute muscle strain injuries more effectively.
- To introduce an imaging-based nomenclature for muscle strains.
- To improve the prediction of prognosis and return-to-sport intervals.
Main Methods:
- Described an imaging (MRI/ultrasound) nomenclature for acute muscle strains.
- Classified injuries based on anatomical site (proximal, middle, distal).
- Distinguished injury types based on anatomical structures involved (intramuscular, myofascial, etc.).
Main Results:
- Proposed a new classification considering anatomical site, pattern, and severity.
- Defined injuries by location: proximal, middle, and distal muscle compartments.
- Identified specific injury patterns: intramuscular, myofascial, myofascial/perifascial, and musculotendinous.
Conclusions:
- The proposed imaging classification requires validation across diverse muscle types and locations.
- Further studies are necessary to establish the general utility and acceptance of this new system.
- This classification aims to enhance diagnostic accuracy and prognostic value for muscle strains.
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