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Role of preoperative pain, muscle function, and activity level in discharge readiness after fast-track hip and knee arthroplasty

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Background and purpose - The concept of fast-track surgery has led to a decline in length of stay after total hip arthroplasty (THA) and total knee arthroplasty (TKA) to about 2-4 days. However, it has been questioned whether this is only achievable in selected patients-or in all patients. We therefore investigated the role of preoperative pain and functional characteristics in discharge readiness and actual LOS in fast-track THA and TKA. Methods - Before surgery, hip pain (THA) or knee pain (TKA), lower-extremity muscle power, functional performance, and physical activity were assessed in a sample of 150 patients and used as independent variables to predict the outcome (dependent variable)-readiness for hospital discharge -for each type of surgery. Discharge readiness was assessed twice daily by blinded assessors. Results - Median discharge readiness and actual length of stay until discharge were both 2 days. Univariate linear regression followed by multiple linear regression revealed that age was the only independent predictor of discharge readiness in THA and TKA, but the standardized coefficients were small (≤ 0.03). Interpretation - These results support the idea that fast-track THA and TKA with a length of stay of about 2-4 days can be achieved for most patients independently of preoperative functional characteristics.

TidsskriftActa Orthopaedica (Print Edition)
Udgave nummer5
Sider (fra-til)488–492
Antal sider5
StatusUdgivet - 2014

ID: 44365345