Muscle injury

Last revised by Ashesh Ishwarlal Ranchod on 25 Sep 2023

Muscle injuries is a broad term encompassing many pathologies and these are common injuries in both elite and amateur athletes as well as in the general population. 

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Typically, muscle injuries present with pain and loss of function. Clinically, they can be graded as 1:

  • grade 1: no appreciable muscle tearing, <5% loss of function/strength
  • grade 2: damage to the musculotendinous junction (MTJ); reduced strength; some residual function
  • grade 3: complete tear of the MTJ; loss function +/- a palpable gap

Muscle injuries can consist of 1-3:

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