What potential cause could lead to gait disturbance after an anterior inferior iliac bone graft?

• A. Damage to the femoral nerve
• B. Stripping of tensor fascia lata
• C. Infection at the graft site
• D. Dislocation of the hip joint

Answer: (B)

The correct answer indicates that gait disturbance after an anterior inferior iliac spine (AIIS) bone graft is potentially caused by stripping of the tensor fascia lata.

When a bone graft is harvested from the AIIS region, it is often necessary to detach or manipulate the tensor fascia lata (TFL). This muscle plays a crucial role in stabilizing the hip and facilitating proper gait mechanics. If the TFL is stripped or manipulated excessively during the grafting procedure, it can lead to weakness or dysfunction of the muscle. This, in turn, can result in altered hip mechanics and cause gait disturbances, as the patient may struggle with stabilization and propulsion during walking due to the compromised function of the TFL.

Understanding the importance of the TFL provides insight into why its stripping is a significant concern post-surgery. Rehabilitation and therapy often focus on restoring the function of this muscle to improve gait and mobility in affected patients.