The patient is either supine or sitting upright with both legs straight on the xray table. The ankle is dorsiflexed. The limb is rotated medially until the medial and lateral malleoli are equidistance from the cassette.
Size: 14’’x17’’ Orientation: Portrait or diagonal as per length of limb
Centering is towards the middle of the cassette with the central ray at 90° angle to both the long axis of the tibia and an imaginary line joining the malleoli.
Collimate laterally to the skin margins, superiorly to the knee joint and inferiorly to the ankle joint.