Rehabilitation approach in robot assisted total knee arthroplasty: an observational study

Background The purpose of this study is to evaluate the impact of total knee arthroplasty (TKA) with the aid of Navio Robot, comparing it with standard prosthetic surgery on the functional outcomes of patients after an intensive rehabilitation program. Method A case–control observational study was conducted on patients undergoing TKA for severe KOA. All patients underwent the same intensive hospital rehabilitation program of 14 daily sessions lasting 3 h. The following rating scales were administered: Numeric Rating Scale (NRS), Knee Society Score (KSS) and 12-Item Short Form Survey scale. Patient assessments were performed 1 week post-surgery (T0), 1 month post-surgery (T2), and 3 months post-surgery (T3). The primary outcomes were active knee extension and fexion and pain severity. The secondary outcomes were functional capacity and quality of life. Results Using repeated measures ANOVA, we observed at T1 a statistically diferent diference for the treatment group compared to the control group about KSS (p<0.05), pain (p<0.05), and knee fexion (p<0.05). No statistically signifcant diference between the two groups was observed for knee extension (p=0.09) and the SF-12 scale (p=0.52). At T2 instead, we observed a statistically signifcant diference for the treatment group compared to the control group as regards KSS (p<0.05) and knee fexion (p<0.05), while no statistically signifcant diference was observed for pain (p=0.83), knee extension (p=0.60), and the SF-12 scale (0.44). Conclusions Our study has demonstrated that robot-NAVIO assisted knee prosthesis surgery, associated with a specifc intensive rehabilitation treatment, in the short and medium term, determines good pain control, better fexion recovery and a improvement of functional capacity