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Cementless Total Hip Arthroplasty in Drug-Induced Osteonecrosis

Background: Osteonecrosis is a debilitating disease that may progress to collapse the subchondral bone and the articular cartilage of the joint. Objective: This study aimed to document the clinical and radiographic results of cementless total hip replacement (THA) in patients with osteonecrosis of the femoral head. Patients and Methods: This prospective clinical trial study was conducted on eighteen patients diagnosed with steroidinduced osteonecrosis of the femoral head at the Orthopedic Department, Zagazig University Hospitals during the period from August 2020 to the end of January 2021. All patients were subjected to Pre and post-operative clinical evaluation, special radiological assessment was applied. Results We assessed the clinical signs and symptoms using a modified Harris hip score pre and post-operatively. MHHS of 90 points or more was categorized as an excellent result; 80-89 points were good; 70-79 points were fair; less than 70 points were poor results. Conclusion: Advancements in surgical technique and better designs have greatly improved the long-term survival of cementless implants in young patients with osteonecrosis of the femoral head.