Table of Contents
What is pelvic teardrop?
The pelvic teardrop, also known as U-figure or Khler 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 teardrop sign?
The teardrop sign (1) is a teardrop-shaped opacity that extends anteriorly from the talotibial joint and continues along the neck of the talus on lateral radiographs of the ankle (Fig 1). EXPLANATION. The teardrop-shaped opacity represents fluid in the inferior space of the anterior compartment of the ankle joint.
What makes up the acetabular tear drop?
This structure is located in the anteroinferior portion of the acetabular fossa at the acetabular notch and consists of cortical and medullary bone contributed primarily from the ischium with a much smaller contribution from the superior pubic ramus.
How much is the body angled when performing Judet views?
Hip Acetabulum RPO or LPO Judet Method Have patient suspend respiration for exposure. Position of part Align body, and center hip being examined to middle of IR. Raise affected side so that anterior surface of body forms a 45 degree angle from table.
When should a hip be Xrayed?
A hip X-ray can help find the cause of common signs and symptoms, such as limping, pain, tenderness, swelling, or deformity in the hip area. It can detect broken bones or a dislocated joint. If hip surgery is required, an X-ray may be taken to plan for the surgery and, later, to see the results of the operation.
What is the function of the fovea capitis?
The fovea capitis is the pit on the head of the femur where the ligamentum teres inserts. This ligament holds the femur in the hip socket.
What is black eyebrow sign?
Black eyebrow sign is the description given on plain facial radiographs to intra-orbital air 1. Air rises into the most superior aspect of the orbit, almost always in the context of a facial fracture, in a linear fashion, giving the appearance of an eyebrow.
What is acetabular Protrusio?
Acetabular protrusion, also known as protrusio acetabuli, is intrapelvic displacement of the acetabulum and femoral head, so that the femoral head projects medial to the ilioischial line. It should be differentiated from coxa profunda.
What is acetabular fossa?
The acetabular fossa is the medial part of the acetabulum that is surrounded by the lunate surface covered by articular cartilage. The fossa is a roughened depression in the center of the acetabulum, and the lunate surface is the smooth horseshoe-shaped articular surface of the acetabulum.
What is femoral offset?
Femoral offset is the distance from the center of rotation of the femoral head to a line bisecting the long axis of the femur (Fig. 1). This radiographic measurement should be accurately performed and varies according to the hip rotation.
What is a Judet view of the pelvis?
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.
What stabilizes the hip joint?
In addition to stabilizing those ligaments, the acetabular labrum plays a role to stabilize the hip joint because it increases the depth of the acetabulum and helps hip joint maintain a partial vacuum in it3 ).
How do I get an iliac oblique view?
The iliac oblique view is obtained on a supined patient with the unaffected side of the pelvis rotated anteriorly at 45. The x-ray beam is directed vertically toward the affected hip. It is useful to assess the posterior column and anterior wall.
Can arthritis show up on xray?
X-rays are often a good tool for determining if arthritis exists and, specifically, what type. Common types of arthritis include rheumatoid arthritis, psoriatic arthritis, and osteoarthritis.
Does a hip MRI show the groin?
MRI is sensitive in diagnosing pathology in groin pain, with injuries to the adductor tendon attachment to the pubic tubercle most commonly identified. Not only can MRI be used to image rectus abdominis/adductor longus aponeurosis and pubic bone pathology, it can also identify hip or inguinal canal abnormalities.
Is a hip Xray the same as a pelvic xray?
A hip x-ray, also known as a hip series or hip radiograph, is a pelvis x-ray with an additional lateral view of the specified hip. It is used for the assessment of unilateral hip pathology, most commonly to diagnose a hip fracture or dislocation.
What happens when you damage your fovea?
When the fovea is compromised by disease or injury, the brain works, subconsciously, to find a position in the retina that it can use to develop a new fixation point a pseudofovea in a region of the retina with surviving photoreceptors.
What is a fovea in anatomy?
The fovea centralis, or fovea, is a small depression within the neurosensory retina where visual acuity is the highest. The fovea itself is the central portion of the macula, which is responsible for central vision.
What is caput femoris?
Head of femur – Caput femoris.
How common is acetabular Protrusio?
Protrusio acetabuli (arthrokatadysis or Otto pelvis) is a relatively rare condition associated with secondary osteoarthritis of the hip. Radiographically, protrusio acetabuli is present when the medial aspect of the femoral head projects medial to Kohler’s (ilioischial) line.
Is acetabular Protrusio painful?
Protrusio acetabuli is a rare pathologic morphology of the hip in which the femoral head protrudes into the true pelvis . It is a reported cause of hip pain and osteoarthritis in young adults .
How is acetabular Protrusio treated?
Total hip arthroplasty is the recommended treatment for the older adult with protrusio acetabuli and degenerative changes.
What is lunate surface?
The lunate surface is a curved articular surface on acetabulum for articulation with the head of the femur.
What is a Cotyloid?
: a small bone forming part of the acetabulum of some mammals.
What passes through 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. …
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