Treatment of Proximal Femur Fracture with a Newly Designed Nail: Trochanteric Fixation Nail-Advanced (TFNA)

Abstract

Purpose: This study evaluated the clinical results and implant safety of a newly developed implant, Trochanteric Fixation Nail-Advanced (TFNA; DePuy Synthes), in the treatment of proximal femur fractures. Materials and Methods: This was a retrospective cohort study of 26 patients diagnosed with proximal femur fracture and treated surgically with TFNA. The patients’ demographic data, surgical data, radiologic findings, and functional outcomes, including complications, were evaluated. Results: The mean age of the patients was 71.2 years (95% confidence interval [CI], 68.2-74.2); 65.4% were female. The mean Carlson comorbidity index score was 5.4, and the mean Koval grade before fracture was 2.1. Fracture classification included four cases of AO/OTA 31.A1, nine cases of A2, six cases of A3, and seven cases of 32A including six cases of atypical femoral fractures. The mean operating time was 53.3 minutes (95% CI, 43.6-63.1). There were no early postoperative complications, such as postoperative infection, deep vein thrombosis, pulmonary embolism, or in-hospital death, except one case of pneumonia. The mean Koval score at the postoperative six-month follow-up was 2.9. Euro- Qol-5 Dimension (EQ-5D) increased from 0.05 to 0.54 after three months and 0.72 at six months postoperatively. Bone union was observed in all cases with a mean union time of 12.9 weeks. No implant failure occurred, and no cases required secondary revision surgery. Conclusion: A new intramedullary nail system, TFNA, showed excellent outcomes and safety in the surgical treatment of proximal femur fractures.