The lateral intermuscular septum runs from the inner fascia lata to the lateral femoral linea aspera, separating the anterior (quadriceps) from the posterior (hamstring) compartment laterally.
| Location | Lateral side of the thigh, deep to the iliotibial tract |
|---|---|
| Boundaries |
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Divides the anterior and posterior thigh compartments on the lateral side; it is an important landmark in the lateral surgical approach to the femur.
The septum is divided during lateral femoral approaches for fracture fixation. Perforating vessels through it must be controlled to prevent haematoma.
Division of the lateral intermuscular septum during lateral femoral shaft approach for ORIF, with control of perforating vessels.
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