No abstract

Radiotherapy represents a highly effective and curative treatment modality for the treatment of pelvic malignancies and for metastatic bone disease. One of the most severe and challenging long-term complication in radiotherapy is osteonecrosis. These changes may be deleterious effects on osseointegration and provide a challenge for long-term implant stability in Total Hip Arthroplasty patients that remains a challenge because of high rates of early failure of traditional implants. The addition of a Kerboull reinforcement cross to the reconstruction reduce the risk of loosening of the acetabular component by giving elasticity to the implant, decreasing the stress applied to the peri-acetabular bone, and allows fixation over a large surface area. There are very few cases of radiation-induced hip necrosis described in the literature. We report two cases of hip joint necrosis with an acetabular protrusion and femoral head deformities, after a therapeutic pelvic radiation for cervical cancer managed by a total hip arthroplasty, by a cemented femoral and acetabular component with the addition of a Kerboull reinforcement cross.