Clinical effectiveness of a standardized community-based supervised post-acute rehabilitation model after total knee arthropathy: A pilot study

Background: Hospital-based outpatient physiotherapy is the standard of care for subacute rehabilitation after total knee arthroplasty (TKA) in Singapore. This study explores the clinical effectiveness of a standardized rehabilitation model at community-based rehabilitation centers to align the appropriate utilization of tertiary and community rehabilitative resources.

Methods: In this pilot study, patients who had undergone TKA were assigned to either control group (n=30) or to intervention group (n=29). The control group received usual hospital-based outpatient physiotherapy, while the intervention group received rehabilitation at a community-based rehabilitation center based on standardized institution protocol. Primary and secondary outcomes were assessed at baseline and at 3 months post TKA.

Results: Baseline characteristics in both groups were not significantly different. All patients completed the study. At 3 months, there were no significant differences in the Time Up and Go test (P<0.853), median 30 s chair rise (P=0.347), knee flexion passive range of motion (P=0.933), knee extension passive range of motion (P=0.409), and presence of knee extension lag (P=0.360). There was a lower pain intensity in the intervention group compared with the control group (P=0.003).

Conclusions: A community-based post-acute TKA rehabilitative model demonstrated improvements in functional outcomes, and reduced pain intensity in study participants, with these findings being similar to that of standard of care hospital-based outpatient physiotherapy. This model of care warrants further evaluation in larger clinical trials.