Muscle injuries is a broad term encompassing many pathologies. They are common injuries in elite and amateur athletes as well as in the general population.
Clinical presentation
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 musculotendinous junction; loss of function +/- a palpable gap
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