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Association of Therapy Time Per Day With Functional Outcomes and Rate of Recovery in Older Adults After Elective Joint Replacement Surgery

Published:November 16, 2020DOI:https://doi.org/10.1016/j.apmr.2020.10.123

      Abstract

      Objectives

      To explore the association between therapy minutes per length of stay (LOS) day (TMLD), functional outcomes, and rate of functional recovery among older adults after elective hip or knee replacement surgery across postacute (PAC) settings.

      Design

      Secondary analysis of data collected for an observational cohort study from 2005 to 2010.

      Setting

      Four inpatient rehabilitation facilities (IRF) and 7 skilled nursing facilities (SNF).

      Participants

      Adults aged 65 years or older (N=162) with Medicare fee-for-service insurance and a primary diagnosis of elective hip or knee replacement.

      Interventions

      Not applicable.

      Main Outcome Measures

      FIM mobility and self-care measures at discharge.

      Results

      The TMLD was divided into high, medium, and low categories. Participants were grouped into low, medium, and high gain rate groups based on their average change in mobility and self-care FIM measures per LOS day. Gain rate and TMLD groups were crossmapped to create 9 gain-TMLD groups separately for mobility and self-care. There were no significant differences in admission mobility or self-care measures by gain rate and TMLD trajectory or by facility type (IRF or SNF). TMLD was not significantly associated with discharge mobility measures. Participants in high gain trajectories attained independence with mobility and self-care tasks at discharge regardless of TMLD. Those in low gain trajectories needed supervision or assistance on all mobility tasks. Older age and greater pain at discharge were significantly associated with lower odds of being in the medium or high gain rate groups.

      Conclusions

      For clinicians and facility managers who must care for patients with constrained resources, the shift to value-based reimbursement for rehabilitation services in PAC settings has reinvigorated the question of whether the duration of therapy provided influences patient outcomes. Three hours of daily therapy after joint replacement surgery may exceed what is necessary for recovery. Postsurgical pain management remains a significant challenge in older adults.

      Keywords

      List of abbreviations:

      IQR (interquartile range), IRF (inpatient rehabilitation facility), LOS (length of stay), PAC (postacute care), SNF (skilled nursing facility), TMLD (therapy minutes per length of stay day)
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