A crush injury of the lower limb happens when the leg or foot is compressed between heavy objects, damaging skin, muscle, bone, nerves and blood vessels. Moderate and severe crush injuries are emergencies. Treatment includes urgent assessment, fasciotomy if needed, debridement, fracture fixation and soft tissue cover, often in stages.
- AnaesthesiaGeneral or spinal
- Hospital stayUsually days to weeks, depending on severity
What is crush injuries of the lower limb?
A crush injury is caused by compression between two hard objects, damaging bone and soft tissue. Simple injuries include heavy objects falling on the foot; moderate injuries occur in road accidents; severe injuries include heavy machinery running over a foot or natural disasters such as earthquakes. Injuries may include cuts, bruising, fractures, nerve damage and blood vessel injury.
Symptoms include severe pain, swelling, numbness or tingling, change in skin colour, and a cold leg or foot. Moderate to severe injuries need immediate care because tissue can die from poor blood supply. Two serious complications are compartment syndrome, where pressure builds within the muscle compartments and can cause tissue death, and crush syndrome (rhabdomyolysis), where damaged muscle releases substances that can cause kidney failure, irregular heartbeat, disability or death.
Diagnosis involves examination, an account of how the injury happened, X-rays for fractures, MRI or CT for soft tissue damage, and blood tests for blood loss and rhabdomyolysis. The treatment plan depends on the extent of damage to the limb.
Who is crush injuries of the lower limb for?
- People with leg or foot injuries from road accidents, falling objects or machinery
- Patients with degloving injuries where skin has been torn off the deeper tissues
- Patients with signs of compartment syndrome needing urgent fasciotomy
- Surgery is performed as an emergency once the patient is haemodynamically stable
How is it done?
- Emergency fasciotomy if compartment syndrome or rhabdomyolysis is present
- Debridement: removing devitalised tissue, keeping viable structures and clearing contamination
- Early bone fixation to stabilise the limb
- Soft tissue cover with grafts or flaps for tissue loss or exposed structures
- Reconstruction is often staged over several operations
What is recovery like?
- The limb is elevated for about 24 to 48 hours to reduce swelling and pain
- Further surgery may be needed to remove muscle that dies after the injury
- Antibiotics and other medicines are taken as prescribed
- Physiotherapy for stretching and strengthening; avoid smoking and alcohol
- Mild to moderate pain at the surgical site is expected early on
What are the risks?
- Blood clots, the most common complication
- Infection or skin sloughing
- Muscle weakness or damage
- Nerve or blood vessel injury
- Scarring, and in severe cases amputation
Why choose Dr. Jithendran?
- Dual training in orthopaedics (MS) and plastic surgery (MCh, DNB), with hand and microsurgery experience from Ganga Hospital, Coimbatore
- Consults at five hospitals across Bengaluru, with 24×7 availability for emergencies
- Clear explanations in English, Tamil, Hindi and Telugu, and time to answer every question
- Strict sterilisation and patient-privacy standards
Frequently asked questions
Is a crush injury of the foot an emergency?
Moderate and severe crush injuries are emergencies. Tissue can die from poor blood supply, and complications such as compartment syndrome and crush syndrome can threaten the limb, the kidneys and even life. Seek hospital care immediately after a significant crush injury.
What is compartment syndrome?
Compartment syndrome is a dangerous build-up of pressure within the muscle compartments of the limb after injury, which cuts off blood flow. Warning signs include severe pain out of proportion to the injury, tightness and numbness. It is treated urgently with a fasciotomy, which opens the compartments to relieve pressure.
Why are several operations often needed?
Crushed tissue can continue to die over the first few days, so repeated debridement may be needed before the wound is clean. Bone is stabilised early, and soft tissue cover with grafts or flaps follows once the wound is ready. Staging gives the best chance of saving the limb.
When should I contact the surgeon after going home?
Contact the surgeon immediately for severe pain not relieved by painkillers, skin that turns blue or feels cold and numb, increasing swelling, or difficulty moving the limb. These can be signs of circulation problems or infection.
