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Fibular Osteosynthesis: Surgery, Technique & Recovery

Fibular osteosynthesis is a surgical procedure to stabilize fractures of the fibula using metal implants such as plates, screws, or nails.

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Things worth knowing about "Fibular osteosynthesis"

Fibular osteosynthesis is a surgical procedure to stabilize fractures of the fibula using metal implants such as plates, screws, or nails.

What is Fibular Osteosynthesis?

Fibular osteosynthesis is a surgical technique used to treat fractures of the fibula, the smaller of the two bones in the lower leg. Metal implants such as plates, screws, or intramedullary nails are used to hold the bone fragments in their correct anatomical position, allowing stable and proper bone healing. The fibula plays a key role in stabilizing the ankle joint, making accurate fracture fixation essential for restoring normal function.

Causes and Indications

Fibular osteosynthesis is indicated when conservative treatment such as casting is insufficient to maintain proper bone alignment. Common indications include:

Ankle fractures (e.g., Maisonneuve fractures, Weber B and Weber C fractures)
Displaced or unstable fibular fractures
Trimalleolar fractures involving the fibula
Open fractures or fractures associated with ligament or vascular injuries
Fractures resulting from accidents, falls, or sports injuries

Surgical Techniques and Implants

The choice of technique depends on the fracture type and location:

Plate Osteosynthesis

Plate osteosynthesis involves placing a metal plate (typically titanium or stainless steel) along the fibula and securing it with screws. This is the most commonly used method for distal fibular fractures near the ankle and provides excellent stability.

Screw Fixation

For simple oblique or spiral fractures, lag screw fixation alone may be sufficient. The bone fragments are compressed and held together by one or more screws.

Intramedullary Nailing

Intramedullary nailing is used in specific fracture patterns where a thin nail is inserted through the medullary canal of the fibula. This approach is less invasive than plate fixation.

Syndesmotic Screw

When the syndesmosis (the ligamentous connection between the fibula and tibia) is also injured, an additional positional screw is placed to restore the correct anatomical relationship between the two bones.

Diagnosis and Preoperative Planning

Before surgery, imaging studies are used to assess the fracture in detail:

X-rays of the ankle in multiple planes as standard diagnostic imaging
Computed tomography (CT) for complex or intra-articular fractures to evaluate bone fragment positions
Magnetic resonance imaging (MRI) if associated ligament or cartilage injuries are suspected

Based on the imaging findings, the fracture is classified using systems such as the Weber classification or the AO classification, which guides the choice of surgical approach and implant selection.

Surgical Procedure

The operation is typically performed under spinal or general anesthesia. Through an incision on the lateral side of the lower leg, the bone fragments are exposed, reduced (repositioned), and fixed with the appropriate implants. Depending on complexity, the procedure takes between 30 and 90 minutes.

Postoperative Care and Rehabilitation

Structured postoperative care is essential for a successful outcome:

Immediately after surgery: elevation of the leg and cooling to reduce swelling
Partial weight-bearing with crutches for several weeks (typically 6 weeks), depending on construct stability
Regular follow-up X-rays to monitor bone healing progress
Physical therapy to restore range of motion, strength, and coordination of the ankle
Gradual return to full weight-bearing once bony consolidation is confirmed

Metal implants generally remain in place for at least 12 to 18 months. In younger, physically active patients or those experiencing discomfort from the hardware, implant removal may be considered at a later stage.

Possible Risks and Complications

As with any surgical procedure, complications can occur, although they are generally uncommon:

Wound or implant infections
Wound healing problems, particularly in patients with diabetes or poor circulation
Nerve or vascular injuries in the surgical area
Implant failure (e.g., plate breakage or screw loosening)
Delayed bone healing (delayed union) or nonunion (failure to heal)
Deep vein thrombosis or pulmonary embolism due to immobilization

Prognosis

For uncomplicated fibular fractures that are surgically treated correctly, the prognosis is generally excellent. Most patients achieve full restoration of ankle function following completed rehabilitation. More complex injuries involving multiple structures may require a longer recovery period.

References

Müller M. E. et al. - AO Principles of Fracture Management. 3rd edition, Thieme, 2021.
Rammelt S., Zwipp H. - Fractures and dislocations of the foot and ankle. Unfallchirurg, 2013; 116(12): 1087-1102.
Herscovici D., Sanders R. W. - The effects of fibular osteosynthesis on ankle stability. Foot and Ankle International, 2000; 21(9): 758-762.

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