External Fixation

External fixation is used when a fracture (broken bone) cannot be safely managed with a cast alone, or when open surgery to insert metal plates or rods inside the body would be too risky at that moment. It is especially common in emergency and trauma settings.

• Open fractures, where the broken bone has pierced through the skin and wound infection is a concern.
• Severely comminuted fractures, where the bone has shattered into many pieces that need precise, adjustable alignment.
• Fractures in patients who are too unstable for lengthy internal fixation surgery, for example after major blood loss or multiple injuries.
• Pelvic fractures that are causing life-threatening bleeding and need immediate stabilisation.
• Fractures near badly damaged skin, burns, or infected wounds, where internal hardware could become infected.

External fixation is generally considered a safer option than open internal surgery in emergency situations, but like any surgical procedure it carries recognised risks.

• Pin site infection: the most common complication, ranging from minor redness and discharge around the pin to deeper infection in the bone (osteomyelitis). Regular pin site care reduces this risk.
• Pin loosening: pins can gradually loosen from the bone, especially if infection develops or if the patient puts weight on the limb too early.
• Neurovascular injury: the pins can, in rare cases, irritate or damage nearby nerves or blood vessels, causing numbness, tingling, or circulation problems.
• Malunion or delayed union: the bone may heal in a slightly wrong position, or healing may be slower than expected.
• Compartment syndrome: a build-up of pressure inside the muscle compartments of the limb, which is a surgical emergency requiring immediate release.

Because external fixation is often performed urgently after a traumatic injury, there may be little time for preparation. When the procedure is planned in advance, the team will give specific instructions, but the general principles below apply in most settings.

Patients are usually asked to stop eating solid food for at least six hours before surgery and to stop drinking clear fluids two hours before, in line with anaesthesia (the medicine that keeps you asleep or numbed during surgery) guidelines. Blood thinners and certain other medications may be paused by the medical team if the situation allows. Smoking slows bone healing and wound healing, so patients are advised to stop as early as possible.

The team will typically run several tests to understand the fracture and plan pin placement safely. Common assessments include X-rays of the affected bone, a CT scan (computed tomography, a detailed three-dimensional image) if the fracture is complex, blood tests to check for infection, clotting ability, and general health, and sometimes an angiogram (imaging of blood vessels) if damage to arteries near the fracture is suspected.

• Step 1: You are given anaesthesia, which may be general (fully asleep), regional (the limb is numbed), or, in very limited situations, local sedation. The anaesthesia team will decide based on your overall condition.
• Step 2: The skin over the pin entry points is cleaned and prepared with antiseptic solution.
• Step 3: The surgeon makes small stab incisions (tiny cuts) at precisely planned locations and drills the pins or wires into the healthy bone above and below the fracture.

Recovery from external fixation varies considerably depending on which bone was involved, how severe the injury was, and whether additional surgeries are needed. Most patients spend at least one to several nights in hospital after trauma-related fixation, while planned procedures may allow shorter stays.

• Pin site care: the skin around each pin is cleaned daily with a saline (salt water) solution or as directed by the nursing team, to prevent infection. The care routine will be demonstrated before discharge.
• Weight bearing: whether you can put weight on the limb depends entirely on which bone is fixed and how stable the construct is. Your surgeon will set specific restrictions.
• Frame integrity checks: the frame and its clamps should be checked regularly for any looseness. The orthopaedic team will show you what to look for.
• Wound monitoring: watch for increasing redness, warmth, swelling, or discharge around any pin site or wound. These can be early signs of infection.
• Pain management: discomfort is expected in the days after surgery and is managed with prescribed pain relief. The level of pain usually decreases as the initial swelling settles.

The cost of external fixation can differ greatly from one patient to another because the procedure is used across a wide spectrum of situations, from a straightforward temporary stabilisation before a planned second surgery, to months of ongoing frame management for limb lengthening or severe open fractures.

• Fracture complexity and severity: a simple single-bone fracture requiring a basic frame costs far less than a comminuted or multi-bone injury needing a custom or circular fixator (a ring-shaped frame used for complex reconstructions).
• Type of external fixator used: basic uniplanar frames are less expensive than modular or circular systems such as an Ilizarov or Taylor Spatial Frame, which use many rings, wires, and struts.
• Length of time the frame is worn: a temporary frame placed for days before internal surgery involves far fewer clinic visits than a fixator worn for several months during bone transport or lengthening.
• Hospital class and country: costs vary significantly between private and public hospitals, and between countries. Specialist trauma centres with dedicated orthopaedic units typically charge more than general hospitals.
• Operating room and anaesthesia fees: the length and complexity of the surgery directly affect these charges.