577 Risk Factors Analysis for Contralateral Neck of Femur Fracture in Elderly Population

Abstract Introduction Neck of femur fracture (NOFF) carries significant morbidity, mortality, and cost implication to the health system. Subsequent contralateral fracture(SCNOFF) further decreases patient performance and increases healthcare burden. The aim of this study was to identify and evaluate potential risk factors and effects of SCNOFF. Method Retrospectively analysed NOFF database from 2012 to 2019 was. Inclusion criteria were patients over 60 years with low energy fractures. Polytrauma, pathological and atypical fractures were excluded. Results There were 114 patients (4.18%) with contralateral hip fractures out of 2727 total NOFF patients. Mean age was 82 years old for the first hip fracture and 85 years for the second. Average time interval between fractures was 36 months. During the two admissions, mean decline in Abbreviated Mental Test Score(AMTS) was 0.4, deterioration of Clinical Fragility Score and Charlson Morbidity Index were from 4.5 to 5.9 (P < 0.0001), and from 5.4 to 6.1 respectively. Mobility was dropped by one level. institutional residency was increased from 23 to 46 (P > 0.0014). Conclusions There is a drastic decline in clinical frailty, mobility status and increase residential dependency following a subsequent fracture. Our findings demonstrate the importance of emphasizing preventive measures to reduce the incidence of SCNOFF.