Description

Test Criteria

• the radiographs can be performed with the patient in the posteroanterior (PA) erect or supine position
  • PA erect
    •  two radiographs performed with patient at RAO 35-45°  and LAO 35-45°
  • supine
    •  two radiographs performed with patient at RPO 35-45°  and LPO 35-45°
• ensure arms are removed from the region of interest
• using a 45° radiolucent sponge in the supine position will assist the patient in maintaining the correct position, whilst flexing the knees will also provide stability.