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Journal of Experimental Orthopaedics

Table 3 The values in the femoral and tibial component rotational angle and absolute values in the rotational mismatch of the femoral and tibial component in postoperative 3DCT image

From: Robotic-assisted total knee arthroplasty improves the rotational mismatch between femoral and tibial components, but not the forgotten joint score 12: a single-center retrospective cohort study

 

Robot group (N = 53)

Manual group (N = 41)

p value

Femoral component rotational angle (°)

2.4 (SD 2.6; -3.5 ~ 9.0)

9.2 (SD 2.6; 3.8 ~ 13.7)

< 0.01

Tibial component rotational angle (°)

0.6 (SD 6.5; -9.6 ~ 17)

1.5 (SD 7.6; -9.9 ~ 19)

n.s

Rotational mismatch (°)

4.9 (SD 4.4; 0.1 ~ 15.2)

9.3 (SD 6.2; 0.4 ~ 25.6)

< 0.01

  1. A positive value represents external rotation, and a negative value represents internal rotation of the femoral and tibial components. The value of the angular divergence of the femoral component relative to the tibial component is defined as the rotational mismatch (Fig. 2) [27]
  2. 3DCT three-dimensional computed tomography measurements, Mean Standard deviation, and range were provided, SD Standard deviation, ns not significant
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