Subtalar Joint - PA Axial Oblique (Anthosens)

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

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 shown	Fractures - 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 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	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)
Respiration	Not applicable
Positioning	Patient's leg fully extended on the table Patient on affected side Place IR under the ankle Place the lower leg in true Lateral position Foot dorsiflexed to 90° CR to medial malleolus Use a double angle of 5° anterior and 23° caudal
Critique PACEMAN	Positioning An open subtalar (talocalcaneal) joint articulations Sinus tarsi Lateral malleolus seen in profile Area Covered Collimation Exposure
Special Notes