Predictors of Functional Recovery After Hip Fracture in the Elderly

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Abstract
Three hundred thirty-eight community dwelling, ambulatory, elderly patients who sustained a hip fracture were observed prospectively to determine which patient and fracture characteristics at hospital admission predicted functional recovery at 3, 6, and 12 months. Multiple logistic regression was performed to estimate the simultaneous contributions of the predictor variables to failure of functional recovery. Before sustaining a fracture, 16% of patients were dependent on basic activities of daily living and 46% were dependent on instrumental activities of daily living. By 1 year after fracture, 73% of the patients had recovered to their basic activities of daily living status before fracture whereas only 48% had recovered to their instrumental activities of daily living status before fracture. Patients who were age 85 years or older, who lived alone before sustaining a fracture, and who had one or more comorbidities were at increased risk of delay or failure in recovering basic activities of daily living. Only instrumental activities of daily living independence before fracture predicted failure to recover instrumental activities of daily living function by 3 and 6 months after fracture. At 1 year, patient age 85 years or older was the only predictor of failure to recover instrumental activities of daily living function that existed before fracture. Based on characteristics at admission, a group of patients at high risk for failure to recover basic activities of daily living function within 1 year of sustaining a hip fracture can be identified.