Can the Length of Hospital Stay After Total Hip Arthroplasty be Predicted by Preoperative Physical Function Characteristics?

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Abstract

Objective

The aim of the present study was to identify independent preoperative hip function characteristics sensitive for preoperative intervention that are predictive of an extended length of hospital stay (LOS) after primary total hip arthroplasty (THA).

Design

This is a longitudinal cohort study. A retrospective chart analysis was conducted on prospectively collected data of patients (158) who underwent unilateral primary elective cemented THA in a 4-yr period. The main outcome measure was LOS after primary THA.

Results

The median LOS was 6.0 days. The authors found an 18.5% increased chance of requiring an LOS of more than 6 days (odds ratio, 2.15; 95% confidence interval, 1.03–4.50) for the patients who needed to use a walking aid preoperatively and a 23.6% increased chance (odds ratio, 2.74; 95% confidence interval, 1.31–5.74) for the patients who had difficulties managing stairs. Sex, age, body mass index, comorbidity, and preoperative pain did not reach the level of significance in the multivariate analysis.

Conclusions

Patients who are at risk for a longer stay in the hospital after THA can be identified preoperatively on simple physical function characteristics. These findings enable the identification of appropriate patients for preoperative training to improve functional recovery and decrease the LOS after primary THA.

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