The Ducroquet view is a radiographic projection of the femoral neck with flexed and abducted affected hip joint.1,4 The view can be used for examining cam-type femoroacetabular impingement (FAI).
Patient position
Patient is supine; the affected hip joint is flexed on pelvis of 90° and abducted of 30°-40° 1(or 45 ° according to other authors).4 The correct technical execution requires providing the patient with adequate support as an aid in maintaining the position and preventing even minimal movements and tremors that could compromise the image quality.2
This position subjects the hip to a certain degree of joint stress; the patient with "femoroacetabular impingement disease" presents usually with a significant pain.2
Technical factors
The direction of the central x-ray is vertical. The incidence point of the central x-ray is the midpoint of the inguinal fold (on the coxofemoral joint). 1,4 The detector’s size is 24 x 30 cm. The exposure data are: 70-80 KVp, 30-40 mAs, 100 cm SID, Potter Bucky. 1
Image technical evaluation
Anatomical entities in evidence: femoral neck, femoral head, femoral head-neck transition and great trochanter. Criterion of correctness: lateral view of femoral neck (Ducroquet profile view).1,4 Radiographic measurement: hip alpha angle (or Nötzli angle). 3
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