Knee

Lower Extremity positions of the knee

 AP pg302 

 Cassette Size  : 10x12 lengthwise tabletop/bucky

 Position of Patient : supine on the table

 Position of Part : Slightly invert the foot to place the knee in the true ap position, center the middle of the cassette to the knee joint, palpate for the apex of the patella about a half inch below the apex is the knee joint

 Central Ray : Vertically to the knee joint

 Structures Shown : Distal femur proximal tibia and fibula, condyles, spine, spaces o n medial and lateral side

 Lateral Knee pg306 

 Cassette Size : 10x12 lengthwise one exposures tabletop or bucky

 Position of patient : supine on the table

 Position of part : Turn the patient on their side and adjust their knee into the true lateral position, palpate for the patella and adjust the patella to be perpendicular from the IR 20-30 degree knee flexion center the mid cassette to about center from the knee joint

 Central Ray : Angled 5-7 degrees cephalic

 Structures shown : distal femur proximal tib/fib, patella and joint space between the tibial and femoral condyles