Hamstring Strain/Rupture

What is it?

Injury to any of the three (semimembranosus, semitendinosus and biceps femoris) hamstring muscles.

What are the causes?

  • Sudden eccentric contracture (contraction of muscle when it is lengthening) of the group at the end of the swing phase, followed by sudden pain.
  • Predisposing factors to hamstring strains are:
    • Poor flexibility
    • Hamstring weakness
    • Poor rehabilitation from previous tear
    • Lumbar / sacro-iliac joint biomechanical dysfucntion
    • Inadequate warm-up/cold environment

What are the symptoms?

  • Pain and tightness in back of thigh.
  • Limited motion in the leg.
  • Depending on level of strain, muscle weakness may be present

Hamstring Strain/Rupture