ĐÁNH GIÁ KẾT QUẢ PHẪU THUẬT THAY KHỚP HÁNG TOÀN PHẦN CHUYỂN ĐỘNG ĐÔI ĐIỀU TRỊ HOẠI TỬ VÔ KHUẨN CHỎM XƯƠNG ĐÙI TẠI BỆNH VIỆN TRUNG ƯƠNG THÁI NGUYÊN

Abstract

Objectives: To evaluate the outcomes of dual mobility total hip arthroplasty for the treatment of avascular necrosis of the femoral head and to identify factors associated with treatment outcomes.

Subjects and methods: A descriptive study was conducted on 43 patients diagnosed with avascular necrosis of the femoral head who underwent dual mobility total hip arthroplasty at Thai Nguyen National Hospital between January 2023 and August 2026.

Results: Among the 43 patients included in the study, 38 (88.4%) were male and 5 (11.6%) were female. The age group of 40–59 years accounted for the largest proportion (55.8%), with a mean age of 55.09 ± 9.43 years. According to the Ficat classification, 19 patients (44.2%) were classified as Stage III, while 24 patients (55.8%) were classified as Stage IV. The mean postoperative Harris Hip Score (HHS) was 88.4 ± 3.533. All patients (100%) achieved good or excellent functional outcomes according to the Harris Hip Score. Hip pain improved progressively following surgery. Before surgery, most patients experienced moderate to very severe hip pain, including 17 patients (39.5%) with very severe pain, 22 (51.2%) with moderate pain, and 4 (9.3%) with mild pain. At the 6-month postoperative follow-up, pain had improved markedly, with 81.4% of patients reporting complete pain relief, while the remaining 18.6% experienced only mild pain. No postoperative complications were observed. Specifically, there were no cases of surgical site infection, hip dislocation, femoral stem loosening, or acetabular component loosening during the follow-up period.

Conclusion: Dual mobility total hip arthroplasty is an effective treatment option for patients with avascular necrosis of the femoral head, providing excellent functional recovery, a low complication rate, and significant postoperative pain relief. Patient age and hip pain severity at the 6-month postoperative follow-up were identified as factors associated with treatment outcomes.