Patterns of rehabilitation after hip arthroplasty and the association with outcomes: an episode of care view.

OBJECTIVES: To examine the patterns of rehabilitation after elective and nonelective hip arthroplasty and its association with outcomes over an episode of postacute care.
DESIGN: Data were obtained from a multisite prospective observational cohort study and its companion follow-up study. Patterns of care were measured by the combination of settings of care where hip arthroplasty patients received rehabilitation therapy. Main outcome measure was motor portion of the functional independence measure.
RESULTS: Approximately 90% of hip arthroplasty patients received rehabilitation care from more than one setting. Eight patterns of care were identified in the follow-up period. Patterns of subsequent care were driven more by initial setting than by etiology. Nonelective hip arthroplasty patients had lower motor functional independence measure scores and used more rehabilitation services than did elective hip arthroplasty patients. Patterns of care were modest factors (accounted for only 7% of variance) in predicting patient motor functional independence measure over an episode of postacute care.
CONCLUSIONS: Etiology of hip arthroplasty is associated with amounts of rehabilitation care used and outcomes. After the initial postacute rehabilitation setting, patients continued to receive considerable amounts of therapy in various settings. It is important to look beyond a single setting of care to an entire episode of care when examining clinical outcomes.