What is X-RAY FOOT AP OBLIQUE?

The medial oblique projection is part of the three view series examining the phalanges, metatarsals and tarsal bones that make up the foot.

Indications

This view demonstrates the location and extent of fractures in the foot and joint space abnormalities. It is also used in the determination of osteomyelitis and examination of foreign bodies.

Patient position

• the patient may be supine or upright depending on comfort
• the affected leg must be flexed enough that the plantar aspect of the foot is resting on the image receptor
• the foot is medially rotated until the plantar surface sits at a 45° angle to the image receptor

Technical factors

• AP projection
• Centering point
  • x-ray beam centered to the base of the 3rd metatarsal
  • the beam will be perpendicular to the image receptor
• Collimation
  • lateral to the skin margins
  • anterior to the skin margins of the distal phalanges
  • posterior to the skin margins of the calcaneum
• Orientation
  • portrait
• Detector Size
  • 18 cm x 24 cm
• Exposure
  • 50-55 kVp
  • 3-4 mAs
• SID
  • 100cm
• Grid
  • no