Both Peetrons and Davis used imaging studies to grade the severity of a hamstring injury.
Imaging modality used by Peetrons: ultrasound (US)
Imaging modalilty used by Davis: MRI
Patient selection: clinical diagnosis of posterior thigh muscle injury
(1) percent of muscle measurement involved (volume or cross-sectional area)
(2) physical findngs on clinical examination
Percent of Muscle
0 (no lesion on imaging study)
> 0 and < 5%
5 to 50%
some elongation or swelling
• A complete tear is associated with complete retraction and a palpable mass that has gap between retracted ends.
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Specialty: Surgery, orthopedic