R.Du Hyun RoOrthopedics & Research
Text
Paper Library
TKAroboticsfunctional alignment
Knee Surgery, Sports Traumatology, Arthroscopy

2023 · Knee Surgery, Sports Traumatology, Arthroscopy

Do Robotic Functional Alignment and Manual Mechanical Alignment Differ in Two-year PROMs and Component Alignment?

The robot-assisted FA group had better 2-year PROMs and satisfaction. The manual MA group had higher rates of femoral coronal and tibial sagittal outliers (P = 0.017 and 0.015).

Research structure

  1. 01
    Subject

    There are 60 Robot-FAs and 60 Manual-MAs.

  2. 02
    Methods

    A prospectively collected database was compared retrospectively. Patients were matched 1:1 for age, sex, and BMI.

  3. 03
    Reported Results

    The robot-assisted FA group had better 2-year PROMs and satisfaction. The manual MA group had higher rates of femoral coronal and tibial sagittal outliers (P = 0.017 and 0.015).

An explanatory schematic separating the study population, methods, and results. It is not an original paper figure.

Evidence & Original Source

Abstract commentary

Participants and Methods

A prospectively collected database was compared retrospectively. Patients were matched 1:1 for age, sex, and BMI. There are 60 Robot-FAs and 60 Manual-MAs.

Main Findings

The robot-assisted FA group had better 2-year PROMs and satisfaction. The manual MA group had higher rates of femoral coronal and tibial sagittal outliers (P = 0.017 and 0.015).

The point of reading on surgery

These findings provide a short-term comparison of a strategy combining FA and robotic assistance. They should not be interpreted as proof of reduced long-term revision rates.

Limitations

Robot use and the alignment strategy differed simultaneously, so their individual effects cannot be separated. This was a nonrandomized Level III study. The sagittal-plane values in the abstract are not clearly defined and require cautious interpretation. The subsequent 2026 gait study did not find a difference in PROMs.

Let's put it briefly.

What did this study confirm?

The robot-assisted FA group had better 2-year PROMs and satisfaction. The manual MA group had higher rates of femoral coronal and tibial sagittal outliers (P = 0.017 and 0.015).

Can it be applied directly to individual patients' treatment decisions?

Robot use and the alignment strategy differed simultaneously, so their individual effects cannot be separated. This was a nonrandomized Level III study. The sagittal-plane values in the abstract are not clearly defined and require cautious interpretation. The subsequent 2026 gait study did not find a difference in PROMs.

Keywords

Abstract · Original text

Byung Sun Choi, Sung Eun Kim, Myungho Yang, Du Hyun Ro, Hyuk-Soo Han. Functional alignment with robotic‑arm assisted total knee arthroplasty demonstrated better patient-reported outcomes than mechanical alignment with manual total knee arthroplasty. Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA. 2023;31(3):1072-1080. doi:10.1007/s00167-022-07227-5.

Excerpt from the original abstract

Given the improved accuracy of robot-assisted surgery, robotic-arm assisted functionally aligned total knee arthroplasty (RFA-TKA) aims to preserve the native pre-arthritic knee biomechanics, to achieve…
Read abstract on PubMed

The original paper.

Functional alignment with robotic-arm assisted total knee arthroplasty demonstrated better patient-reported outcomes than mechanical alignment with manual total knee arthroplasty

Byung Sun Choi, Sung Eun Kim, Myungho Yang, Du Hyun Ro, Hyuk-Soo Han
Knee Surgery, Sports Traumatology, Arthroscopy · 2023 · online 2022

DOI · 10.1007/s00167-022-07227-5PubMedBased data
Reviewed academic journal articles