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allograft-prosthetic composites, or cementation may be necessary. Conclusion Revision THA requires close evaluation of the patient, mode of implant failure, and available treatment options. Although great strides in patient selection, diagnosis, and implant design have been made, there remains a paucity of literature

allograft prosthetic composite, or rotationplasty techniques (Fig. 6.3). The chosen reconstruction method depends on the location of the defect, age, prognosis, and the patient’s expectations or desires. • Fig. 6.1(A and B) Anteroposterior and lateral views of distal femur osteosarcoma. Part A presents

composition and structure of cartilage are influential in the progression and severity of disease because the lack of blood supply to cartilage reduces its self-healing abilities. Cartilage architecture is complex, including chondrocytes, immature cartilage cells, and an extracellular matrix (ECM) composed of collagen, noncollagenous proteins, proteoglycans

vascularity, osseous deficiency, osteolysis, and strong deforming forces from the hip abductors.31 The optimal treatment strategy for displaced periprosthetic greater trochanteric fractures remains debated, and all options have high rates of patient dissatisfaction. Vancouver B fractures In the majority of cases, Vancouver B fractures require surgical intervention.15 Vancouver