Subtalar Joint - AP Axial Oblique - Medial Rotation

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Subtalar Joint - AP Axial Oblique - Medial Rotation (Broden) (Clarks)
Area Covered	Distal tibia and fibula, entire talus and calcaneum, proximal tarsal bones
Pathology shown	Shows posterior articular surface of the calcaneus to determine presence of joint involvement in fractures
Radiographic Anatomy
IR Size & Orientation	18 x 24cm Landscape
Film / Screen Combination	Detail (CR and DR as recommended by manufacturer)
Bucky / Grid	No
Filter	No
Exposure	60 kVp 3.2 mAs
FFD / SID	100cm
Central Ray	CR directed to a point 2 cm caudoanteriorly to the lateral malleolus Obtain four images with the CR angled cephalad at 40° - shows anterior portion of articulation 30° - shows middle portion of articulation 20° - shows middle portion of articulation 10° - shows posterior part of posterior articulation
Collimation	Four sides of collimation collimate to ankle jont and calcaneum
Markers	Distal and lateral Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Not applicable
Positioning	Patient supine Patient's leg fully extended on the table Place IR under the ankle Rotate lower leg medially 45° Foot dorsiflexed to 90° CR directed to a point 2 cm caudoanteriorly to the lateral malleolus Obtain four images with the CR angled cephalad at 10°, 20°, 30°, 40°
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes