Activity Measure for Postacute Care “6-Clicks” Mobility Scores Predict Length of Stay Following Hip Resurfacing

Abstract

AbstractNo studies have identified length of stay (LOS) predictors following hip resurfacing arthroplasty (HRA). The activity measure for postacute care (AM-PAC) score is a readily available tool that may allow physicians to predict LOS in patients undergoing HRA. We retrospectively reviewed patients who underwent HRA between February 2017 and April 2021. All patients completed AM-PAC mobility score on postoperative day 0. Age, American Society of Anesthesiology class, body mass index, surgical time, and Charlson comorbidity index were included as possible predictors of LOS. Predictive models were generated predictive for LOS times of more than 24 and more than 48 hours. Analysis was used to determine c. We identified 262 male patients who completed AM-PAC scores following HRA. Patients with a LOS more than 24 hours had significantly lower AM-PAC scores than patients with a LOS less than 24 hours (23.43 ± 1.37 vs. 19.76 ± 2.78; p < 0.001). Similarly, patients with a LOS more than 48 hours had significantly lower AM-PAC scores than patients with a LOS less than 48 hours (22.08 ± 2.56 vs. 18.17 ± 2.23; p < 0.001). AM-PAC scores were 84.5% accurate for predicting LOS more than 24 hours and 86.3% for LOS more than 48 hours. Patients with scores less than 23 were at higher risk for LOS more than 24 hours and less than 19 were likely to have a LOS more than 48 hours. AM-PAC scores following HRA were predictive of LOS. Providers may use the cutoffs in this analysis to determine how mobility influences LOS following HRA. This is a Level III evidence, retrospective cohort study.