Reasons for continuing physiotherapy treatment after a high-intensity physyiotherapy program in patients after total knee arthroplasty: a mixed-methods study

Background: Patients after total knee arthroplasty treated with a 10-day high-intensity physiotherapy program in a resort were expected to recover fast without need for a longer physiotherapy treatment period.Objective: To explore the expectations and experiences of patients with total knee arthroplasty following the high-intensity physiotherapy program, including the perceived recovery level at discharge, and reasons for (not) adhering to the given advice at discharge (being either continuing with or refraining from further physiotherapy treatment).Design: A mixed-methods approach: semi-structured interviews were held and were then used to develop items and answer categories for a survey.Methods: Fifteen patients participated in semi-structured interviews, which focused on expectations and experiences related to the total knee arthroplasty and physiotherapy program, the perceived recovery level at the moment of discharge, and the reasons for the advice at discharge (continuing with or refraining from physiotherapy treatment) being followed. A deductive thematic analysis of those interviews was used to develop a survey, which was sent to the total cohort of 60 patients. Logistic regression models were estimated to determine which factors were associated with the continuation of physiotherapy treatment and (not) following the advice. Results: Four themes were identified: (1) confidence of independent recovery; (2) experiencing residual complaints; (3) expecting further improvement of physical fitness; and (4) preferring to be supervised by a healthcare professional. These themes were covered by 14 items in the survey. In total, 55 out of 60 patients completed the survey. Out of 36 patients, 23 continued with physiotherapy treatment despite an adequate level of recovery. Five out of 19 patients, who were advised to continue with physiotherapy treatment, decided to refrain. Advice to continue with physiotherapy treatment was followed more often than advice to refrain from physiotherapy treatment (OR 0.09; 95%CI 0.01-0.85). Reasons for continuing with physiotherapy treatment were residual complaints, the expectation that their physical fitness could be improved and preferring to be supervised by a healthcare professional. In contrast, patients who refrained from physiotherapy, despite being advised to continue, were self-confident that they could do exercises by themselves.Conclusions: A substantial proportion of patients continued with physiotherapy treatment because they expected that a higher level of recovery could be reached. The level of self-confidence to recover on their own seemed to be an important factor in deciding to continue with or refrain from physiotherapy treatment. It would be helpful to focus on self-management skills during the high-intensity physiotherapy program following total knee arthroplasty.