Clinical pathway improves medical practice in total knee arthroplasty

Clinical pathways in total knee arthroplasty (TKA) consist of general guidelines, including several topics as early rehabilitation and antibiotic systematization, which are used to improve patient's management, decrease complication rates and enhance clinical outcomes. The primary purpose of this study was to assess whether the use of a clinical pathway for TKA can contribute to reduce LOS and healthcare costs in a private hospital, without an increase in the hospital readmission rate. We also aimed to assess whether care providers adhered to the recommendations mainly antibiotic use and physical therapy.

Retrospective cohort study of 485 patients who underwent TKA at private hospital. Patients were analyzed in two groups: Group I (GI), composed by 220 TKA patients, prior to the clinical pathway implementation, and Group 2 (GII), with 265 TKA patients post-clinical pathway. Several outcomes were analyzed: length of hospital stay, time from use of prophylactic antibiotic therapy, readmission within 30 days, physical therapy and costs associated to procedures and hospitalization rates.

The implementation of the clinical pathway was related with the reduction of the length of hospital stay from 6.3 days to 4.9 days (p = 0.021) without increase in readmissions. The physical therapy on the first postoperative day was most frequent in GII than GI (96.2% vs 78.1%, p < 0.001). Prophylactic ATB 60 minutes prior the surgery was significantly more used in GII than GI (99.2% vs 87.4%, p < 0.001). In addition, ATB suspension within 48 hours was significantly more frequent in GII than GI (84.7% vs. 51.6%, p < 0.001). The cost procedure of TKA showed a reduction of US$1,252.00 in GII when compared with GI (p<0,001).

The implementation of a clinical pathway, with focus on early rehabilitation, for patients underwent TKA, contributed to a reduction of LOS and costs during hospital stay, with no increase in the readmission rate. We also concluded that there was adherence to the clinical pathway by care providers in our institution.