ONFH
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1.Diagnosis of osteonecrosis of the femoral head (ONFH) based on MRI and X-ray or CT, confirmed according to the ARCO staging system (2019 revision) or Ficat classification, with ARCO stage II–III at the time of surgery. 2.Patients who underwent lesion debridement and impaction bone grafting for ONFH at our institution, with or without supplementary internal fixation. 3.Age between 18 and 65 years. 4.ONFH etiology classified as alcohol-induced, corticosteroid-induced, idiopathic, or post-traumatic, and previously managed with conservative treatment. 5.Patients who completed preoperative baseline imaging and underwent immediate postoperative CT, with =6 months of follow-up and at least two postoperative CT examinations. 6.Availability of complete perioperative and demographic data.
Exclusion criteria
Exclusion criteria: 1.Presence of advanced femoral head collapse, hip osteoarthritis, or acetabular pathology at baseline. 2.Patients who underwent core decompression, vascularized fibular grafting, tantalum rod implantation, or primary arthroplasty, instead of impaction bone grafting. 3.History of developmental dysplasia of the hip (DDH), slipped capital femoral epiphysis, Legg–Calvé–Perthes disease, or prior pelvic/femoral osteotomy. 4.Coexisting malignancy, significant metabolic bone disorders (e.g., hyperparathyroidism, Paget’s disease, osteogenesis imperfecta), or severe osteoporosis (T-score = -2.5). 5.Incomplete clinical data or poor-quality CT scans that preclude reliable Hounsfield Unit (HU) measurement.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Progression of femoral head collapse = 2 mm (Yes/No);Conversion to total hip arthroplasty (Yes/No);Presence of osteoarthritis (Yes/No); | — |
Countries
China
Contacts
The Third Affiliated Hospital of Guangzhou University of Chinese Medicine