Ankle

Lower Extremity positions of the ankle

 AP-pg286 

 Cassette Size  : 10x12 crosswise two exposures

 Position of Patient : supine on the table

 Position of Part : extend the knee and place the ankle in the AP position, dorsiflex the toes up so that the plantar surface is perpendicular to IR, center the ankle joint to the middle of the half cassette, slightly invert the foot(open the talofibular joint)

 Central Ray : Vertically to the middle of the ankle joint

 Structures Shown : distal tibia and fibula, talus, ankle(mortise) joint, malleoli

 AP Medial Oblique pg289 

 Cassette Size : 10x12 crosswise two exposures

 Position of patient : supine on the table

 Position of part : Elevate the hip and rotate the entire extremity medially and adjust the ankle into a 45o oblique, dorsiflex toes up, center the ankle to the middle of the half cassette

 Central Ray : Vertically to the middle of the ankle joint

 Structures shown : Same as AP

 Lateral-mediolateral-286 

 Cassette Size : 8x10 lengthwise one exposure

 Position of patient : supine on the table

 Position of part : rotate the patient on to their side and place the lateral surface against the IR, center the ankle to middle of the cassette, adjust the ankle in the true lateral position, plantar surface perpendicular

 Central Ray : Vertically to the middle of the ankle joint

 Structures shown : distal tibia and fibula superimposed, ankle joint, talus,

 Lateromedial projection-288 

 Cassette Size: 8x10 lengthwise one exposure

 Position of Patient: supine on the table

 Position of Part: turn patient so that the medial surface is touching the IR, adjust the ankle in the lateral position, plantar surface perpendicular, center the foot to the middle of the cassette

 Central Ray:  Vertically to the middle of the ankle joint

 Structures shown:  Same as mediolateral Best lateral projection