Muscle strain is a frequent event among great sportsmen, especially among sprinters, dancers, circus performers and footballers, but also in many sports when the hamstring muscles stretch at low speed. or during their eccentric contractions. Breakdown is not limited to athletes, however: it can occur during everyday tasks.

The injury readily affects the hamstrings, quadriceps, adductors or even the medial gastrocnemius. However, it can affect all muscles, even those that appear to be well protected such as the sphincters, the perineum or those which animate and control the eyeball.