Pelvis (Judet view)

Mr Andrew Murphy et al.

The oblique pelvis otherwise known as the Judet view is an additional projection to the pelvic series when there is suspicion of an acetabular fracture.

The Judet view is comprised of two projections, first the iliac oblique for assessment of the posterior column and anterior wall of the acetabulum; secondly, the obturator oblique view demonstrating the anterior column of the pelvis along with the posterior wall of the acetabulum.

  • iliac oblique
    • patient is supine
    • the unaffected side is rotated roughly 45°anterior, generally aided with a 45° sponge
    • it is advisable the patient is central on the table and at no risk of over rolling
  • obturator oblique
    • patient is supine
    • the affected side is rotated roughly 45° anterior, generally aided with a 45° sponge
    • ensure the patient is central on the table and at no risk of over rolling
  • anteroposterior projection
  • centring point
    • iliac oblique
      • 5 cm distal and 5 cm medial of the ASIS closest to the image receptor
    • obturator oblique
      • 5 cm distal and 5 cm medial of the ASIS that is rolled up anterior to the image receptor
  • collimation
    • superior to the level of the ASIS
    • inferior to the proximal femur
    • laterally to the skin margins
    • medially to the pubic symphysis
  • orientation  
    • portrait
  • detector size
    • 24 cm x 30 cm
  • exposure
    • 70-80 kVp
    • 10-20 mAs
  • SID
    • 100 cm
  • grid
    • yes

The iliac oblique projection should demonstrate the anterior rim of the acetabulum as well as the posterior ilioischial column. The iliac wing, as it is 'flatten' out on the image should be well demonstrated.

The obturator oblique projection should confidently show the posterior rim as well as the anterior ilioischial line, as per the name the obturator foramen is well demonstrated.

The 'Judet view' is a two-part view of the acetabulum, the collimation of the Judet views is departmentally dependent.

Some institutions will advise the Judet views are done as a full two view oblique pelvis (see figure 1 and 2), in this case, it would be a landscape projection with a full-sized detector, with the same centring parameters as the AP pelvis.

Radiographic views
Share article

Article Information

rID: 45308
Section: Radiography
Tag: refs
Synonyms or Alternate Spellings:
  • Oblique pelvis
  • Judet projection

Support Radiopaedia and see fewer ads

Cases and Figures

  • Drag
    Hip bone. Image s...
    Figure 1: annotated pelvic anatomy
    Drag here to reorder.
  • Drag
    Figure 2: Judet view (LPO - right hip elevated)
    Drag here to reorder.
  • Drag
    Figure 3: Judet view (RPO - left hip elevated)
    Drag here to reorder.
  • Drag
    Case 1: posterior acetabular fracture
    Drag here to reorder.
  • Drag
    Figure 4: annotated Iliac oblique view
    Drag here to reorder.
  • Drag
    Figure 5: annotated obturator oblique view
    Drag here to reorder.
  • Updating… Please wait.
    Loadinganimation

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.