RADIOGRAPHIC AND FUNCTIONAL EVALUATION OF HIGH POROUS METAL OSSEOINTEGRATION IN ACETABULAR REVISIONS WITH PELVIC DISSOCIATION.

Introduction: Pelvic dissociation is a complex condition with a high rate of surgical complications and no established standard treatment. Surgery aims to preserve limb function by restoring bone structure and hip biomechanics. Conventional orthopaedic implants are made from materials such as stainless steel, cobalt-chrome or titanium. High-porosity implants have been introduced to improve the durability of hip arthroplasty. Objective: To evaluate osseointegration after revision total hip arthroplasty in cases of pelvic dissociation. Method: A descriptive observational study carried out at the Hospital das Clínicas of the Federal University of Goiás and at the Orthopedics and Traumatology Clinic (COT) in Goiânia. Data was collected from the medical records of patients who underwent total hip arthroplasty between 2012 and 2020, using titanium or tantalum implants, both high-porosity materials. Results: The study included 26 patients, 53.8% female and 46.2% male. The majority (34.6%) were aged between 60 and 69. Of the patients, 53.8% used titanium implants and 46.2% tantalum. After surgery, 38.5% had a Harris Hip Score between 70 and 80, with 61.5% of patients showing osseointegration in less than six months. Conclusion: Tantalum, due to its high porosity, was effective in treating patients with pelvic dissociation undergoing revision total hip arthroplasty.