Pelvis series

The pelvis series is comprised of an anteroposterior (AP) with additional projections based on indications and pathology. The series is used most in emergency departments during the evaluation of multi-trauma patients due to the complex anatomy the AP projection covers.

The pelvis series examines the main pelvic ring, obturator foramina, sacroiliac joints, symphysis pubis, acetabulum, sacral foramina, and the proximal femur.

The AP pelvis has a diagnostic yield of ~94% in severely injured patients 2-3.

See an approach to the pelvic radiograph.

Indications

Pelvic radiographs are performed for a variety of indications including 1-4

  • blunt trauma 
  • generalised hip pain 
  • arthropathy
  • post operative follow up after THR 
  • Paget's disease 
  • fall 

Projections

Standard projections
  • AP
    • demonstrates the pelvis in the natural anatomical position
    • arcuate, ilioischial, iliofemoral and Shenton lines  (figure 7-10) are examined against this view
Modified trauma projections
  • horizontal beam lateral hip
    • utilised on patients with suspected hip fracture or dislocation
    • demonstrates the neck of femur in the true lateral projection
    • obtained with minimal patient movement
  •  Clements-Nakayama view 6
    • modfied view that requires no lower limb movement and minimum discomfort 
    • used for patients that have suspected bilateral neck of femur fractures or significant bilateral lower limb injuries
    • demonstrates the neck of femur in the true lateral projection
    • utilised on patients with suspected hip fracture or dislocation
Additional projections
  • inlet view
    • caudal projection to best demonstrates the main pelvic ring and associated pathology
    • the best view for evaluation of the posterior displacement of both the main pelvic ring and fractures of the pubic symphysis  
  • outlet view  
  • Judet view (oblique)
    • for evaluation of the superior, medial, lateral, and posterior surfaces of the acetabulum 5 

 

Radiographic views
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rID: 44862
Section: Radiography
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Cases and figures

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    Figure 1: female pelvis AP
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    Figure 2: male pelvis AP
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    Figure 3: judet view (RPO - left hip elevated)
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    Figure 4: judet view (LPO - right hip elevated)
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    Figure 5: inlet view of a normal pelvis
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    Figure 6: outlet view of a normal pelvis
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    Bony pelvis anter...
    Figure 7: labeled anterior pelvis
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    Pelvic ligaments....
    Figure 8: labeled posterior pelvis
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    Figure 9: iliofemoral line
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    Figure 10: pelvic ring lines
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    Figure 11: Shenton's line
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    Figure 12: arcuate lines
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    Figure 13: annotated obturator oblique view
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    Figure 14: annotated iliac oblique view
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    Figure 15: normal radiographic anatomy of the hip
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