A Novel Scoring System Can Estimate the Risk of Posttraumatic Osteonecrosis After Femoral Neck Fracture Fixation in Adults Younger Than 65 Years.
The FNF-ON8 showed greater discrimination for ONFH than the Garden classification, and among patients with displaced fractures, scores of ≥ 6 were associated with greater odds of ONFH than scores of 0 to 5, which was associated with greater odds of ONFH.