Sesamoids - Oblique

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Sesamoids - Oblique
Area Covered	Head of the first metatarsal, sesamoid bones
Pathology shown	Extent of injury to sesamoid bones
Radiographic Anatomy	Foot Radiographic Anatomy
IR Size & Orientation	18cm x 24 cm Landscape
Film / Screen Combination	Detail (CR and DR as recommended by manufacturer)
Bucky / Grid	No
Filter	No
Exposure	50 kVp 2 mAs
FFD / SID	100cm
Central Ray	CR directed to the prominence of the first metatarsophalangeal joint at an angle of 40° towards the heel
Collimation	Four sides of collimation Collimate closely to area of interest
Markers	Distal and lateral Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Not applicabe
Positioning	Patient in a lateral recumbent position on the unaffected side Partially extend the limb being examined and put support under knee and foot Adjust height of support under knee to place the foot in the lateral position with the first metatarsophalangeal joint perpendicular to the horizontal Place IR under metatarsal region CR directed to the prominence of the first metatarsophalangeal joint at an angle of 40° towards the heel
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes