- Volkmann's ischemic contracture
Compartment syndrome occurs when blood supply is dramatically reduced to muscles in a closed body space, known as a compartment. Compartments are found in the hand, forearm, upper arm, abdomen, buttock, and leg. The muscles most frequently involved are those on the front of the lower leg or the palm side of the forearm.
What is going on in the body?
A muscle group is surrounded by a tough, fibrous membrane called the fascia. Small blood vessels supply the muscle with oxygen and other essential nutrients. Insufficient blood supply to tissues and compartment syndrome can occur if:
- the muscle compartment size is reduced, as when a cast is too tight
- the muscle compartment contents are increased, such as by swelling or bleeding associated with injury
If the affected muscles are deprived of blood supply for more than 6 hours, nerve and muscle tissue can be permanently damaged or destroyed.
What are the causes and risks of the condition?
Some common causes of compartment syndrome include:
- bleeding, from a bone fracture
or other injuries
- casts applied to treat bone fractures or other abnormalities
- a crush injury
- intense exercise
- leaking of intravenous fluid or injections into the compartment
- repeated use of a muscle group
that involve the muscles in the compartment
- swelling of the muscle itself
What can be done to prevent the condition?
Acute compartment syndrome can sometimes be avoided by early stabilization of a fracture. This may involve splinting, elevating the injured limb on a pillow, and applying ice to reduce swelling.
If a person has a cast, circulation to the area below the cast needs to be checked frequently. If circulation is impaired or the person has severe pain, the healthcare professional may choose to cut the cast to relieve pressure.
How is the condition diagnosed?
Diagnosis of compartment syndrome begins with a medical history and physical exam. The raised pressure within the compartment can be measured with specialized instruments.
Long Term Effects
What are the long-term effects of the condition?
If compartment syndrome is untreated, death of the muscles can occur. Muscles can become inactive and excessively tight. Toes or fingers may become fixed in a curled position with permanent numbness. Severe tissue death may lead to the need for amputation of the affected limb.
What are the risks to others?
Compartment syndrome is not contagious and poses no risk to others.
What are the treatments for the condition?
Diagnosis must be made accurately and promptly to assure a good outcome. Initial treatment consists of elevating the limb above the level of the heart. If a cast has been applied, it is removed.
In more severe cases, a surgical procedure known as a fasciotomy may be used to open the membrane leading to the affected muscles. Pressure is relieved, and the blood flow can return to normal. Often the skin needs to be left open for a few days. It can be closed with sutures or a skin graft after the swelling goes down.
What are the side effects of the treatments?
Surgery can be complicated by bleeding, infection, or reactions to anesthesia. The muscle and nerves may not return to normal after recovery.
What happens after treatment for the condition?
A scar may appear where the skin was left open following surgery.
How is the condition monitored?
Any new or worsening symptoms should be reported to the healthcare professional.