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Knee replacement, also known as knee arthroplasty, is a surgical procedure to replace the weight-bearing surfaces of the knee joint to relieve pain and disability, most commonly offered when joint pain is not diminished by conservative sources.
It comes in different sizes and lengths and often has a noticeable color, e.g. blue or white to enhance visibility for self-replacement and maintenance. Disadvantages of the non-indwelling prosthesis are a certain amount of risk when inserting them by oneself and the devices have a shorter lifetime and need to be changed more often.
In vertebrate anatomy, the hip, or coxa [1] (pl.: coxae) in medical terminology, refers to either an anatomical region or a joint on the outer (lateral) side of the pelvis.. The hip region is located lateral and anterior to the gluteal region, inferior to the iliac crest, and lateral to the obturator foramen, with muscle tendons and soft tissues overlying the greater trochanter of the femur. [2]
Hip dislocations can also occur following a hip replacement or from a developmental abnormality known as hip dysplasia. [6] Hip dislocations are classified by fracture association and by the positioning of the dislocated femoral head. [7] [8] A posteriorly positioned head is the most common dislocation type. [5]
Osseointegration is also defined as: "the formation of a direct interface between an implant and bone, without intervening soft tissue". [1]An osseointegrated implant is a type of implant defined as "an endosteal implant containing pores into which osteoblasts and supporting connective tissue can migrate". [2]
Hip resurfacing has been developed as a surgical alternative to total hip replacement (THR). The procedure consists of placing a cap (usually made of cobalt-chrome metal), which is hollow and shaped like a mushroom, over the head of the femur while a matching metal cup (similar to what is used with a THR) is placed in the acetabulum (pelvis socket), replacing the articulating surfaces of the ...
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