Injury advice > Lowerleg/Ankle Injuries > Anterior Compartment Syndrome


Anterior Compartment Syndrome

Anterior shin splints

What is a Anterior compartment syndrome?

The tibialis anterior is the big muscle on the outside of the shin, it is surrounded by a sheath. When this muscle gets too big for the sheath, it causes pain and anterior compartment syndrome arises. Compartment syndromes can be acute or chronic.

What are the causes of acute anterior compartment syndrome?

  • Bleeding in the compartment (this will cause swelling) normally caused by an impact.
  • A tear in the muscle causing bleeding.
  • Swelling caused by over use.

What are the symptoms of anterior compartment syndrome?

  • If caused by a blow there will obviously be a sharp pain in the muscle on the outside of the lower leg at that point.
  • Weakness when trying to pull the foot upwards against resistance.
  • The tibialis anterior may be swollen and tender.
  • Pain when the foot and toes are bent downwards.

What can the athlete do?

  • Rest, if possinbble exercise the upper body
  • Cold therapy
  • Visit a sports injury professional

What can a sports injury professional do?

  • Prescribe NSAIDs anti-inflammatory medication e.g. ibuprofen.
  • Correct any biomechanical disfunction with orthotic devices.
  • Operate. They could make a small cut or two in the muscle sheath to allow the muscle to expand out.

What causes chronic anterior compartment syndrome?

  • Over use and over developing the muscle through training.
  • When exercising the blood vessels fill up, increasing pressure on the sheath and causing pain.
  • The sheath becomes inelastic and unable to expand.

What are the symptoms of chronic compatment syndrome?

  • Pain which increases during exercise which eventually makes running impossible.
  • Pain goes after a short rest but comes back again during exercise.
  • Difficulty in lifting the toes and foot up.
  • Pain when pulling the toes and foot downwards.

How can the athlete treat this injury?

  • Rest until there is no pain.
  • Apply sports massage techniques to increase the elasticity of the muscle sheath.
  • Apply heat and use a heat retainer.
  • See a sports injury specialist.

Visiting a sports injury professional.

  • Prescribe diuretics and anti-inflammatory medication.
  • Analyse your training methods, running gait and types of shoe to determine any contributory factors.
  • Use sports massage techniques to stretch the muscle sheath.
  • Operate. They could make a small cut or two in the muscle sheath to allow the muscle to expand out.

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Please see the Virtual Sports Injury Clinic for more information on how to treat Anterior Compartment Syndrome