Closed ankle fractures have been reported to account for 10% off all fractures presenting to the Emergency Department. Many of these injuries require acute surgical management either via direct admission or through defined outpatient surgical pathways. While both methods have been shown to be safe, few studies have examined the cost effectiveness of each clinical scenario. The purpose of this study is to compare cost and resource utilization associated with inpatient and outpatient ankle fracture surgery at a Canadian academic institution.

This is a retrospective chart review of patients who underwent acute ankle fracture surgery at London Health Sciences Centre between 2016 and 2018. Thirty patients who underwent inpatient ankle surgery for closed, isolated ankle fractures at University Hospital were compared to 30 consecutive patients who underwent outpatient ankle surgery for similar fractures at Victoria hospital. Data pertaining to age at time of surgery, sex, BMI, fracture type, operating/recovery room time, and length of hospital stay were collected. All emergency room visits, readmissions and complications within 30 days of surgery were also recorded.

Inpatient and outpatient cohorts were similar with respect to average age (48 vs. 44, P=0.326) and body mass index (29.8 vs. 29.1, P=0.741). There was a greater proportion of patients with an American Society of Anesthesia (ASA) Classification of 3 or greater in the inpatient surgery group (48% vs. 23%). The inpatient group spent an average of 1.2 days in hospital while waiting for surgery and a average of 72 hours in hospital for their entire surgical encounter. The outpatient group spent an average of eight days (at home) waiting for surgery while spending an average of 7.4 hours in hospital during their entire surgical encounter. Outpatient ankle fracture surgery was associated with a cost savings of 35.9% in comparison to inpatient ankle fracture surgery (P < 0 .001). There were no significant differences in the rates of emergency room visits, readmissions, or complications between cohorts.

Preliminary findings suggest that outpatient ankle fracture surgery is appropriate for most patients, requires less hospital resources and is associated with similar rates of readmission and complications as inpatient surgery. An established outpatient surgical pathway may offer significant cost savings in the treatment of the common closed ankle fracture that requires surgical intervention.

Introduction

Trunnion wear has been reported as a cause for failure of modern total hip replacement implants. While there are several reports on the prevalence of trunnion corrosion with specific stem designs, little is known about the prevalence of this problem across other femoral stem designs. The purpose of this study is to review three commonly used uncemented femoral stems and to correlate any established risk factors with rates of revision.