Factors Affecting Hospital Length of Stay in Geriatric Patients With a Surgically Treated Fragility Ankle Fracture.

Fragility ankle fractures in elderly have a rising incidence and hospitalization may be prolonged due to pre-existing comorbidities, compromised soft tissue and postoperative difficulties in the rehabilitation process. The aim of this retrospective cohort study was to investigate risk factors for longer total hospitalization duration in elderly patients with surgically treated fragility (Lauge Hansen supination external rotation type 4) fractures. We included all patients ≥ 70 years with a fragility fracture, who were treated surgically between 2011 and 2019 (n = 97) in a level 1 and 2 trauma center. Data on patient demographics, fracture characteristics, surgical treatment strategies and postoperative complications were retrieved from medical records. Multivariate regression analysis was performed to identify independent risk factors for longer hospitalization duration. The mean age of the included patients was 78.27 (± 6.56) years; 71 patients (73.20%) were female. Ten fractures (10.30%) were classified as open and 49 (50.50%) as a luxation type fracture. Fifty-nine patients (60.80%) were hospitalized after admission to the emergency department. External fixation was performed in 34 patients (35.10%) and served as bridge to definitive fixation in 29 patients (85.30%). The mean total hospital length of stay of all patients was 7.04 (± 6.58) days. Multivariate regression analysis demonstrated that the use of external fixation (p < .001) and the postoperative discharge destination (p < .001) were independently associated with a prolonged hospital stay. External fixation and discharge destination were independent risk factors for a prolonged hospital stay in elderly patients with a fragility fracture.