Ankle Fracture Fixation (ORIF)

Why this approach — at MOS

My pre-operative evaluation for ankle fractures includes standard ankle X-rays (AP, mortise, and lateral views) and a gravity stress or manual stress mortise view to determine stability. CT scan is added for complex fractures — especially when the posterior malleolus is involved or comminution is present — to characterize fragment anatomy before surgery.

Fibula fixation is my primary concern for most bimalleolar patterns because restoring fibula length and rotation restores the ankle mortise. Medial malleolus fixation is added when that fragment is displaced. I test the syndesmosis after fixation — if it remains unstable after bony repair, I use a suture-button device (rather than a rigid screw) because it allows physiologic motion of the syndesmosis and does not require routine removal.

Patients in Montgomery County who present with ankle fractures sometimes ask whether surgery is truly necessary or whether a good cast would do. My answer is honest and evidence-based: stable fractures without mortise disruption can often be managed without surgery and do well. But displaced fractures with an unstable mortise — even a millimeter of talar shift changes the contact mechanics of the ankle joint enough to cause early arthritis. Surgery protects the long-term joint.

Who is a candidate?

Indications

• Displaced fibula fracture with medial clear space widening on stress X-rays (unstable mortise)
• Bimalleolar or trimalleolar ankle fracture with displacement
• Ankle fracture-dislocation
• Open (compound) ankle fracture — urgent surgical debridement and stabilization
• Posterior malleolus fragment involving more than 25–33% of the articular surface
• Fracture in a diabetic patient with peripheral neuropathy (higher risk of malunion with conservative treatment)

Contraindications

• Stable isolated lateral malleolus fracture with intact medial side — treated non-operatively in many cases
• Significant soft-tissue swelling from the acute injury — surgery is typically delayed 5–10 days until "wrinkle sign" returns (skin wrinkles again when pinched, indicating swelling has resolved enough for safe wound closure)
• Active local or systemic infection
• Non-ambulatory patient where the risks of surgery outweigh the benefits

Conservative Treatment First

Stable, non-displaced ankle fractures — particularly isolated lateral malleolus fractures without mortise widening — can be managed without surgery. A short leg cast or controlled ankle motion (CAM) boot for 6 weeks allows bone healing in a well-aligned position. X-ray follow-up at 1–2 weeks confirms that alignment is maintained. Non-operative treatment requires that the fracture be verified as stable on stress X-ray, which is performed with the ankle stressed to assess whether the medial side opens.

Unstable fractures — those where the ankle mortise widens with stress — cannot be reliably held in correct position with a cast alone, and surgery is recommended to prevent malunion (healing in a malaligned position) and post-traumatic arthritis.

The procedure

What Is Ankle Fracture Fixation (ORIF)?

Ankle fracture fixation (ORIF — open reduction internal fixation) is surgery to realign and stabilize broken ankle bones using plates, screws, or rods. It is needed when an ankle fracture is displaced, unstable, or associated with joint dislocation — injuries that cannot be reliably treated with a cast alone.

The ankle joint (tibiotalar joint) depends on a precise bony architecture — the "ankle mortise" — formed by the tibia above, the fibula laterally, and the medial malleolus (the inner ankle bump) medially. When bones break, the talus can shift out of its normal position, leading to malalignment, joint incongruence, and early arthritis if left incorrectly aligned.

Ankle fractures are classified by which bones are broken. Isolated fibula (lateral malleolus) fractures are the most common and are often stable enough for non-surgical management. Bimalleolar fractures (fibula + medial malleolus) and trimalleolar fractures (fibula + medial malleolus + posterior tibia) are more complex and usually unstable, requiring surgery. Fracture-dislocations — where the ankle is both broken and the joint is out of position — are urgent injuries requiring timely treatment.

What Happens During Ankle Fracture ORIF?

Surgery is performed at an ambulatory surgery center as an outpatient procedure for most fractures.

Timing: If significant swelling is present at the time of injury, surgery is often delayed 5–10 days to allow swelling to decrease. A temporary splint is applied and the patient is made non-weight-bearing until surgery.

Anesthesia: General anesthesia or a popliteal sciatic nerve block with sedation. The nerve block also provides post-operative analgesia.

Positioning: Supine with the operative leg prepared and draped. A thigh tourniquet controls bleeding. The C-arm fluoroscopy unit is positioned for intraoperative imaging.

Fibula fixation (lateral malleolus): A lateral incision over the fibula is made. The fracture is reduced — bone ends brought back into alignment — under direct vision and confirmed on fluoroscopy. A low-profile locking plate is contoured to the fibula and secured with screws above and below the fracture. For high fibula fractures, an intramedullary nail or long plate may be used.

Medial malleolus fixation (if fractured): A medial incision over the medial malleolus. The fracture is reduced and held with one or two partially threaded lag screws that compress the fragment back onto the tibia. Small comminuted fragments may require a tension band wire technique.

Posterior malleolus fixation (if indicated): Large posterior fragments (>25–33% of the articular surface) are fixed with screws placed from anterior to posterior or through a separate posterior approach.

Syndesmosis assessment: The stability of the syndesmosis (the fibrous joint binding the tibia and fibula just above the ankle) is tested intraoperatively. If unstable, a syndesmotic screw or suture-button device is placed.

Closure: Layered closure of each incision. Splint and compressive dressings.

Recovery timeline

Frequently Asked Questions