Subtalar Joint - AP Axial Oblique - Lateral Rotation (Isherwood)

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Radiographic Positioning


Adult
Other related pages of interest

Name of projection Subtalar Joint - AP Axial Oblique - Lateral Rotation (Isherwood)This is a featured page
Area Covered Distal tibia and fibula, entire talus and calcaneum, proximal tarsal bones
Pathology shownPosterior subtalar articulation, subtalar joint in profile
Radiographic Anatomy
IR Size & Orientation 18 x 24cm
Landscape
Film / Screen Combination Detail
(CR and DR as recommended by manufacturer)
Bucky / Grid No
FilterNo
Exposure 60 kVp
3.2 mAs
FFD / SID 100cm
Central Ray CR directed to a point 2cm distal to the medial malleolus with an angle of 10° cephalad
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)
RespirationNot applicable
Positioning
  • Patient semi supine / seated
  • Patient's leg fully extended on the table
  • Place IR under the ankle
  • Rotate lower leg laterally 60°
  • Foot dorsiflexed to 90°
  • CR directed to a point 2cm distal to the medial malleolus
  • CR angled 10° cephalad
Critique

Positioning
Area Covered
Collimation
Exposure
Special Notes

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