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Background: Children rarely require hip replacement, and therefore very little is known about the most effective procedure for children who require hip replacement after proximal femoral resection for a tumor. Methods: We reviewed the outcome of forty hip replacements in children between two and fifteen years old who had a proximal femoral replacement for malignant disease. Twenty-one children survived the illness and were followed for three to twenty-one years. Cemented acetabular components were used initially to restore hip function, but, in more recent procedures, unipolar replacements and uncemented implants were used. Results: Children who were over the age of eleven years at the time of surgery had a rate of failure (defined as revision of the acetabular component) of 25% at ten years compared with a rate of 75% in younger children. Unipolar replacements in children of all ages failed by ten years, either because of pain or subluxation that led to revision. In children over the age of eleven years, both cemented and uncemented acetabular implants performed well. Conclusions: The preferred method for restoration of hip function in children under the age of eleven years following proximal femoral resection for a tumor remains unclear. We recommend that at the initial hip surgery an attempt should be made to cause as little damage as possible to the acetabulum, but most children will inevitably need revision surgery as they get older. We hope that this study will guide others in their decision-making with regard to this relatively rare condition. Level of Evidence: Therapeutic Level III. See Instructions to Authors for a complete description of levels of evidence. [ABSTRACT FROM AUTHOR]

Purpose . We report on the quality of life following treatment for a malignant primary bone tumour around the knee in skeletally immature children. Patients . Patients ( n=41; mean age = 18 years; range 8-28) had all experienced chemotherapy in a neo-adjuvant setting, surgical excision of the tumour and endoprosthetic replacement. Methods . Interviews were conducted separately with the child and mother and focused on mobility, body image and the impact of treatment on schooling, employment and plans for the future. Results . Mobility in the group was variable. Only 12% reported that they could run with any confidence. The proportion who were able to swim (49%) or ride a bike (46%) was higher. All had experienced major disruption in schooling (mean absence following diagnosis = 12 months). Eight had repeated a school year and 41% patients reported that their schoolwork was affected. As a result of their experience, eight (six females and two males) chose health-related employment. Concerns for the future were highest among males and those with manual jobs. Three patients were receiving psychiatric support, in relation to extreme concern about the risk of recurrence. All expressed satisfaction with treatment, and older patients believed that the prosthesis gave a better quality of life than amputation. Discussion . Our data suggest that outcome following limb-salvage surgery is variable. Education is disrupted. Even so, only two left school with no qualifications. Employment is most restricted among males with few qualifications who may benefit from sensitive vocational counselling. [ABSTRACT FROM AUTHOR]