The tibialis anterior originates from which of the following?

• A. Head of fibula
• B. Posterior surface of tibia
• C. Medial condyle of femur
• D. Lateral condyle of tibia; proximal, lateral surface of tibia and Interosseous membrane

Answer: (D)

The muscle starts at the upper front part of the leg, from the proximal, lateral surface of the tibia and the interosseous membrane between the tibia and fibula (with attachments near the lateral side). This set of origins places the tibialis anterior along the front of the leg and aligns with its role in dorsiflexion and inversion of the foot.

That’s why the option describing the lateral aspect of the tibia near the proximal region plus the interosseous membrane is the best choice. The head of the fibula, the posterior surface of the tibia, or the medial femoral condyle are not where this muscle originates, so they don’t fit.