<p>Robotic arm assisted TKA (raTKA) may result in less pain, less blood loss, and a faster recovery than manual TKA (conventional) (mTKA) by protecting soft tissue during surgery and reducing soft tissue injury zones. To compare the length of stay (LOS) following total knee arthroplasty (TKA) using the MAKO robotic arm (raTKA) versus manual technique (mTKA). The study also compares the pain scores after surgery, Oxford knee score (OKS) at 6 weeks, Haemoglobin drop after surgery and tourniquet times between the two groups. Retrospective study of 311 consecutive patients who underwent TKA between October 2020 and September 2022. 3 patients were excluded due to the following exclusion criteria (complex primary TKA, simultaneous bilateral TKA, and not being discharged directly to home). 45 patients who underwent navigated TKA during the study period were also excluded. 263 patients were included in the study, 174 mTKA, and 89 raTKA. Comparison was made with regards to length of stay in hours, pain scores post-operative, haemoglobin (Hb) pre and postoperatively, BMI, ASA, Age, Sex, and OKS. No difference between the two groups in length of stay in hours, pain scores and OKS at 6 weeks. Median length of stay was 50.8&#xa0;h (IQR-23.4) for the mTKA group and 51.04&#xa0;h (IQR-25.31) for the raTKA group (<i>p</i> = 0.37). The mTKA group had higher proportion of patients with worse overnight pain scores as compared to raTKA group (71.3% vs. 67%) though the difference was not statistically significant. There was no difference in the pain scores on day one between the two groups (76.6% vs. 76.6%). The OKS at 6 weeks was marginally better in the mTKA group (31.46) as compared to raTKA group (29.47) (<i>p</i> = 0.26). There was no difference observed in this study in the length of stay in hospital between raTKA and mTKA in the setting of a high volume arthroplasty practice.</p>

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Does robotic assistance influence the length of stay after total knee arthroplasty?

  • Sophie Rae,
  • Mahmoud Rahuma,
  • Carl Green,
  • Manish Changulani

摘要

Robotic arm assisted TKA (raTKA) may result in less pain, less blood loss, and a faster recovery than manual TKA (conventional) (mTKA) by protecting soft tissue during surgery and reducing soft tissue injury zones. To compare the length of stay (LOS) following total knee arthroplasty (TKA) using the MAKO robotic arm (raTKA) versus manual technique (mTKA). The study also compares the pain scores after surgery, Oxford knee score (OKS) at 6 weeks, Haemoglobin drop after surgery and tourniquet times between the two groups. Retrospective study of 311 consecutive patients who underwent TKA between October 2020 and September 2022. 3 patients were excluded due to the following exclusion criteria (complex primary TKA, simultaneous bilateral TKA, and not being discharged directly to home). 45 patients who underwent navigated TKA during the study period were also excluded. 263 patients were included in the study, 174 mTKA, and 89 raTKA. Comparison was made with regards to length of stay in hours, pain scores post-operative, haemoglobin (Hb) pre and postoperatively, BMI, ASA, Age, Sex, and OKS. No difference between the two groups in length of stay in hours, pain scores and OKS at 6 weeks. Median length of stay was 50.8 h (IQR-23.4) for the mTKA group and 51.04 h (IQR-25.31) for the raTKA group (p = 0.37). The mTKA group had higher proportion of patients with worse overnight pain scores as compared to raTKA group (71.3% vs. 67%) though the difference was not statistically significant. There was no difference in the pain scores on day one between the two groups (76.6% vs. 76.6%). The OKS at 6 weeks was marginally better in the mTKA group (31.46) as compared to raTKA group (29.47) (p = 0.26). There was no difference observed in this study in the length of stay in hospital between raTKA and mTKA in the setting of a high volume arthroplasty practice.