Pediatric Radiology and Hip Conditions

The hip bone, also known as the innominate bone, is made up of three parts: the ilium, ischium, and pubis.

The obturator foramen is the largest foramen in the human body, located in the hip bone.

The pelvic brim, an imaginary plane, separates the false pelvis from the true pelvis. The true pelvis is below the brim, while the false pelvis is above it.

The true pelvis, also known as the lesser pelvis, supports the lower abdominal organs and forms the actual birth canal. It is found below the pelvic brim.

The male pelvis has an acute pubic arch, less than 90 degrees, and a heart-shaped (oval) inlet, compared to the wider, more rounded inlet and wider pubic arch of the female pelvis.

The area where the ilium, ischium, and pubis bones meet, forming the hip bone.

The joint formed by the acetabulum of the hip bone and the head of the femur. It allows for a wide range of motion.

A condition where the SI joints fuse together, causing stiffness and pain in the spine.

A fracture that involves both sides of the pelvis, often caused by trauma.

A condition where the head of the femur slips off the epiphyseal plate, often seen in adolescents.

Position where the proximal femur is oriented for a true AP projection. Seen when the lesser trochanter is not visible in profile.

The outlet of the true pelvis, which is one of the key anatomical structures of the pelvis.

A radiographic method where the pelvis is rotated 35-40 degrees toward the affected side, specifically for viewing the outlet of the pelvis.

An imaging method for the acetabulum that utilizes a cephalic tilt of the central ray (CR) and rotation for optimal visualization.

This method demonstrates possible distortion of the acetabulum. It involves a 12-degree cephalad tilt and 35-40 degree rotation toward the affected side.

The direction the body is turned while being imaged, in this case, the patient's pelvis is rotated towards their left side.

A view of the pelvis from the front to the back, showing the left obturator foramen narrowed and the right one open, which is an unusual observation.

Non-anatomical features on an image that do not represent real structures. In this case, it may be on the upper part of the femur.

A view of the hip taken from an angle across the body, looking from below and up. This view shows the leg on the same side as the hip is being imaged is raised.

A view of the pelvis looking down from above. This view of the pelvic opening includes the possible presence of fractures.