O1142 BETTER CLINICAL OUTCOMES FOR OSTEOPOROTIC TROCHANTERIC FRACTURE PATIENTS: DHS FIXED WITH HYDROXYAPATITE-COATED AO/ASIF SCREWS

Abstract

Aims: Our purpose was to determine if DHS fixed with hydroxyapatite (HA)-coated AO/ASIF screws improves fixation and clinical outcomes in osteoporotic trochanteric fracture patients. Methods: 120 osteoporotic patients with trochanteric fractures were randomized to receive 135° 4-hole DHS fixed with either standard lag and cortical stainless-steel AO/ASIF screws (Group A) or HA-coated lag and cortical stainless-steel AO/ASIF screws (Group B). Inclusion criteria were: female; age ≥65 years; AO type A1 or A2; and BMD lower than -2.5 T score. Results: Tip Apex Distance (TAD) was 22±4mm in Group A and 23±5mm in Group B (ns). In Group A there were 4 cut-out cases and none in Group B (p< 0.05, β=0.8). Post-op (ns) and 6 month (p=0.008) femoral neck-shaft angle was 134±5° and 129±7° (Group A) and 134±7° and 133±7° (Group B). At 6 months, Harris Hip Score was 63±22 (Group A) and 71±18 (Group B) (p=0.02). Conclusions: HA-coated AO/ASIF screws prevent fracture varization and lag screw cutout, thus improving clinical outcomes in osteoporotic trochanteric fracture patients.