What is Dunn view xray?
The Dunn view is a radiographic projection of the hip that demonstrates and examines the hip joint, femoral head, acetabulum, and particularly the relationship of the femoral head and acetabulum.
What is a normal Tonnis angle?
The reference range for normal Tönnis angle is −10° to 10°. A Tönnis angle >10° is indicative of acetabular dysplasia, and a Tönnis angle ≤10° is indicative of a pincer lesion.
What is pistol grip deformity?
The pistol grip deformity is considered a typical radiographic sign of cam-type femoroacetabular impingement. The shape of the proximal femur is reminiscent of a flintlock pistol known from old pirate movies.
What does cam deformity mean?
What is a cam deformity or a cam lesion? The hip is a ball and a socket joint. The ball is called the femoral head and the socket is called the acetabulum. In patients with a cam deformity, the head is not perfectly spherical and does not fit well into the socket.
What is a false profile?
What are Fake Profiles? A fake profile is the representation of a person, organization or company that does not truly exist, on social media. Often these accounts use names and identities that not only look real but are designed to get closer access to specific people and their target audience.
How do you do DUNN view?
The 90° Dunn radiograph is made with the patient supine on the x-ray table. The symptomatic hip is flexed 90° and abducted 20° while being maintained in a position of neutral rotation. The crosshairs of the beam are then directed at a point midway between the anterior superior iliac spine and the pubic symphysis.
What is normal acetabular version?
The normal anteversion of the acetabulum was found to be 17 +/- 6 degrees (mean +/- standard deviation) and of the femoral neck 13 +/- 7 degrees.
Does hip impingement require surgery?
Patients diagnosed with hip impingement syndrome can preserve their hip joint through a combination of nonsurgical and surgical treatment methods. Surgery is often recommended if nonsurgical methods have failed to reduce symptoms.
Why does hip impingement happen?
Hip impingement may be caused by a misshapen femoral head, deformed femoral neck, or a hip socket that covers too much of the femoral head. Over time, repetitive “bumping” or impingement of the femur on the rim of the acetabulum leads to cartilage and labral damage.