Hip zone

hip zone

What are hip prosthesis zones?

After hip replacement, hip prosthesis zones are regions in the interface between prosthesis material and the surrounding bone. These are used as reference regions when describing for example complications including hip prosthesis loosening on medical imaging.

What is the most anterior part of the hip bone?

The Pubis. The pubis is the most anterior portion of the hip bone. It consists of a body, superior ramus and inferior ramus (ramus = branch). Pubic body – located medially, it articulates with the opposite pubic body at the pubic symphysis.

What are the left and right hip bones?

The left and right hip bones (innominate bones, pelvic bones) are two irregularly shaped bones that form part of the pelvic girdle – the bony structure that attaches the axial skeleton to the lower limbs. The hip bones have three main articulations:

Is the ischium part of the hip bone?

The Ischium. The ischium forms the posteroinferior part of the hip bone. Much like the pubis, it is composed of a body, an inferior ramus and superior ramus. The inferior ischial ramus combines with the inferior pubic ramus forming the ischiopubic ramus, which encloses part of the obturator foramen.

What are the three main components of a hip prosthesis?

A hip prosthesis comprises of three main components: (1) femoral component (consisting of a stem/pin and head), (2) acetabular cup, and (3) acetabular interface. From: Multi-criteria Decision Analysis for Supporting the Selection of Engineering Materials in Product Design (Second Edition), 2016

What are the Charnley zones in a prosthesis?

Charnley zones are around the acetabular component. There are 3 zones indicating the superior, middle, and inferior third of the acetabulum. When the prosthesis fails, a revision THA is performed which involves removing the primary components.

What is the lucent zone in hip arthroplasties?

In stable non-cemented hip arthroplasties lucent zones at the metal-bone interface do occur, as it usually is a combination of bone ingrowth and fibrous tissue ingrowth, that provides the fixation in most cases. This fibrous tissue presents as a lucent zone at the interface.

What type of cement is used for hip replacement?

For cemented hip replacements, polymethylmethacrylate, which is an acrylic polymer, is most often employed as the cement to hold the hip prosthesis in place. What qualities does a hip prosthesis need?

What type of bone is the left hip bone?

The left and right hip bones (innominate bones, pelvic bones) are two irregularly shaped bones that form part of the pelvic girdle - the bony structure that attaches the axial skeleton to the lower limbs. Sacroiliac joint - articulation with the sacrum.

What are the components of the hip?

Your hip is comprised of four main components: The hip is actually a ball and socket joint, uniting two separate bones, the femur (thigh bone) with the pelvis. The pelvis features two cup-shaded depressions called the acetabulum, one on either side of the body. The femur is the longest bone in the body and connects to the pelvis at the hip joint.

What is the function of the hip bone?

The hip helps the body maintain balance and assists in ambulation. The bones of the hip include the femur, the ilium, the ischium, and the pubis. The pubis, ischium, and ilium together constitute the pelvis while the thigh bone is the femur.

How many bones are there in the hip bone?

Each hip bone is connected to the corresponding femur (thigh bone) (forming the primary connection between the bones of the lower limb and the axial skeleton) through the large ball and socket joint of the hip. 2–4. Hip bone (os coxae) 1. Sacrum (os sacrum), 2. Ilium (os ilium), 3. Ischium (os ischii) 4.

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