What is the teardrop on a hip xray?
The pelvic teardrop, also known as U-figure or Köhler teardrop, is a radiographic feature seen on pelvic x-rays and results from the end-on projection of a bony ridge running along the floor of the acetabular fossa.
What is the acetabular teardrop?
The teardrop is located inferomedially in the acetabulum, just superior to the obturator foramen. The lateral lip is the exterior, and the medial lip is the interior of the acetabular wall. The ilioischial line projects over the medial acetabulum only fortuitously on the straight anteroposterior (AP) roentgenogram.
What makes up the tear drop?
What is Tonnis angle?
The Tönnis angle is also known as the acetabular roof angle of Tönnis, the weight-bearing acetabular index, Lequesne’s acetabular index, the acetabular roof obliquity and the horizontal toit externe angle (7,16,17). This angle measures the weight-bearing surface of the acetabulum or sourcil.
Where is the acetabular notch?
the hip bone
The acetabular notch is a deep notch in the acetabulum of the hip bone. The acetabular notch is continuous with a circular non-articular depression, the acetabular fossa, at the bottom of the cavity: this depression is perforated by numerous apertures, and lodges a mass of fat. Right hip bone.
What is Ilioischial line?
The ilioischial line, also known as the Köhler line, is a radiologic feature seen in the AP pelvis view and serves to assess the posterior acetabular column 1-4.
What is acetabular fossa?
The acetabular fossa, also known as the cotyloid fossa, is the central aspect of the medial wall of the acetabulum that hosts the ligamentum teres and the fibrofatty pulvinar. It is the nonarticular portion inside the U-shaped labrum that extends to the acetabular notch 1.
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 Tonnis grade of osteoarthritis?
Tonnis grading system is commonly used to describe the presence of osteoarthritis in the hips with grading as follows: • Grade 0: no signs of osteoarthritis • Grade 1: sclerosis of the joint with minimal joint space narrowing and osteophyte formation • Grade 2: small cysts in the femoral head or acetabulum with …
What is the purpose of acetabular notch?
The notch is converted into a foramen by the transverse acetabular ligament; through the foramen nutrient vessels and nerves enter the joint; the margins of the notch serve for the attachment of the ligament of the head of the femur.
What ligament closes the acetabular notch?
the transverse ligament
The acetabular notch is a depression in the margin of the acetabulum located anteroinferiorly. It is bridged by the transverse ligament, and thus forms the acetabular foramen. The ligamentum teres has part of its origin from the acetabular notch.
What are Judet views?
The oblique internal and external pelvis views otherwise known as the Judet view are additional projections to the pelvic series when there is suspicion of an acetabular fracture.