Version User Scope of changes
Jun 18 2011, 11:36 AM EDT (current) AndyC 5 words added, 5 words deleted
May 28 2011, 2:20 AM EDT AndyC 5 words added


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Radiographic Positioning

Other related pages of interest

Name of projection Subtalar Joint - PA Axial Oblique - Lateral Rotation (Anthosens)
Area Covered Distal tibia and fibula, entire talus and calcaneum, proximal tarsal bones
Pathology shownFractures - in particular the involvement of the anterior and posterior articulations of the subtalar joint, gives an end on image of the sinus tarsi and a view of the lateral malleolus
Radiographic Anatomy
IR Size & Orientation 18 x 24cm
Film / Screen Combination Detail
(CR and DR as recommended by manufacturer)
Bucky / Grid No
Exposure 60 kVp
3.2 mAs
FFD / SID 100cm
Central Ray Direct CR to medial malleolus
Use a double angle of 5° anterior and 23° caudal
Collimation Four sides of collimation
collimate to ankle jont and calcaneum
Markers Proximal and Anterior
Marker orientation AP
Shielding Gonadal (check your department's policy guidelines)
RespirationNot applicable
  • patient'sPatient's leg fully extended on the table
  • patientPatient on affected side
  • placePlace IR under the ankle
  • placePlace the lower leg in true Lateral position
  • footFoot dorsiflexed to 90°
  • CR to medial malleolus
  • Use a double angle of 5° anterior and 23° caudal

  • An open subtalar (talocalcaneal) joint articulations
  • Sinus tarsi
  • Lateral malleolus seen in profile
Area Covered
Special Notes