25 - Hip Replacement A case study for material selection The hip joint is an important component of the skeletal system At this junction loads are

25 - Hip Replacement A case study for material selection...

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1 Hip Replacement: A case study for material selection A commonly occurring condition is referred to as "wear and tear arthritis” or Osteoarthritis. The hip joint is an important component of the skeletal system. At this junction, loads are transmitted from bone to bone by muscular action.This is normally accompanied by some relative motion of the component bones There are many conditions that can result in degeneration of the hip joint. A painful hip can severely affect your ability to lead a full active life.
2 Replacement Components Damaged and diseased hip joints have been replaced with artificial or prosthetic ones, with moderate success, beginning in the late 1950s. Each prosthesis is made up of two parts: The acetabular component (socket portion) replaces the acetabulum. The femoral component (stem portion) replaces the femoral head.
3 The Surgery Removing the Femoral Head Reaming the Acetabulum Inserting the Acetabular Component Preparing the Femoral Canal Inserting the Femoral Stem
4 Attaching the Femoral Head The Completed Hip Joint
5 Material Requirement In essence, there are four basic components to the artificial hip: 1. The femoral stem 2. The ball that attaches to the stem 3. The acetabular cup that is affixed to the pelvis 4. A fixation agent that secures the stem into the femoral and the cup to the pelvis

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