Internal fixation (osteosynthesis)
Surgeries/Orthopedic/Internal fixation

Internal fixation (osteosynthesis)

Surgical fixation of fractures using plates, screws, nails or pins, to allow bone healing under good conditions.

What is it?

Internal fixation (osteosynthesis) consists of stabilizing a fracture using surgical hardware: screwed plates, intramedullary nails, screws or pins. This fixation holds the bone fragments in a correct anatomical position throughout the healing period, which promotes quality healing and rapid functional recovery. It is indicated when the fracture is displaced, unstable or articular, or when treatment with a cast would not achieve a good result. It often allows early mobilization of the neighboring joint, thereby limiting the stiffness and muscle wasting associated with prolonged immobilization. The choice of hardware and technique depends on the bone involved, the type of fracture and the patient's profile. The operation is performed under intra-operative radiological guidance, guaranteeing precise positioning of the implants. The hardware is generally well tolerated and is only removed if it becomes bothersome. At Clinique Pasteur Tunis, internal fixation procedures are performed in operating theaters equipped with fluoroscopic imaging and a complete range of fixation hardware, by an orthopedic team available for emergencies as well as scheduled surgery.
Internal fixation (osteosynthesis)

When is it indicated?

Displaced or unstable fractures of the limbs

When the bone fragments are displaced or at risk of moving under a simple cast, fixation with a plate, screws or a nail holds them in a good position during healing.

Articular fractures requiring anatomical reduction

A fracture that crosses a joint must be reconstructed with great precision to prevent premature wear of the joint.

Fractures of the femoral neck or the hip region

These frequent fractures, particularly after a fall, most often require prompt surgical fixation so the patient can get up and walk again as soon as possible.

Fractures that cannot be treated effectively with a cast

Certain locations or types of fracture heal poorly in a cast: surgical fixation then offers more reliable stability and faster mobilization.

Nonunion (failure of an old fracture to heal)

When an old fracture has never healed and remains painful, a new fixation, often combined with a bone graft, restarts the healing of the bone.

Preparation

1Precise radiological assessment of the fracture (X-rays, CT scan if needed)
2Anesthesia consultation, as an emergency or scheduled depending on the context
3Pre-operative laboratory work-up
4Remain fasting before the operation according to the team's instructions

Procedure

1

General or regional anesthesia depending on the location

2

Reduction of the fracture under radiological guidance

3

Fixation with a plate, nail, screws or pins depending on the type of fracture

4

Radiological verification of the construct and its stability

5

Closure and dressing

6

Supervised early mobilization according to the surgeon's instructions

Duration

45 minutes to 2 hours depending on the fracture

Aftercare & Recovery

Fixation most often allows early mobilization and greater comfort than prolonged immobilization. Bone healing is achieved in a few weeks to a few months, monitored by regular X-rays, with appropriate rehabilitation to regain strength and mobility.

Risks and side effects

Surgical site infection, rare thanks to asepsis protocols
Discomfort related to the hardware, which may justify its removal at a later stage
Delayed bone healing, uncommon and monitored during radiological follow-up

These risks remain rare. Your surgeon will inform you in detail before the procedure.

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At a glance

Duration: 45 minutes to 2 hours depending on the fracture
Preparation: Required
Dedicated specialist team