Foot - Lateral Oblique

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Foot - Oblique (Lateral Rotation)
Area Covered	Entire foot from distal phalanges to the calcaneus, and the talus
Pathology shown	Fractures, dislocation, foreign body, joint space abnormalities
Radiographic Anatomy	Foot Radiographic Anatomy
IR Size & Orientation	24 x 30cm Portrait, divided in two can usually fit 2 views, use lead masking for unused area
Film / Screen Combination	Detail (CR and DR as recommended by manufacturer)
Bucky / Grid	No
Filter	Yes - when using film a thin filter covering phalanges and distal metatarsals
Exposure	57 kVp 3.2 mAs
FFD / SID	100cm
Central Ray	Directed at base of the 3rd metatarsal Perpendicular to the IR
Collimation	Outer skin margins of the foot on four sides
Markers	Distal and Lateral Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Not applicable
Positioning	Patient supine on the X-ray table or barouche Flex the knee of the affected leg Place IR under foot parallel to its long axis Externally (lateraly) rotate the leg until the plantar surface is at a 45° angle to the IR Use a sponge for stabilising the foot in this position
Critique PACEMAN	Positioning Area Covered The entire foot should be demonstrated to show all phalanges, metatarsals, calcaneum and proximal talus Collimation Centre: The base of the third metatarsal Shutter A: Open to include the outer skin margins of the lateral and medial sides of the foot Shutter B: Open to include the soft tissue of the toes and the proximal calcaneus Exposure Bony trabecular patterns and cortical outlines are sharply defined Soft tissues are visualised Correct use of a filter will give uniform density of phalanges and metatarsals
Special Notes