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Journal of Experimental Orthopaedics

Table 1 Comparison of preoperative knee flexion angle, bone morphologic angles, and clinical outcome

From: Kinematics and center of axial rotation during walking after medial pivot type total knee arthroplasty

Group

Knee flexion (°)

FTA (°)

α angle (°)

β angle (°)

γ angle (°)

δ angle (°)

WBL (%)

Medial dilation of the tibiofemoral joint (mm)

KSS 2011 (total)

MP-CS

132.5 ± 9.8

183.0 ± 4.6

98.5 ± 2.4

84.0 ± 3.3

–

81.8 ± 2.9

9.0 ± 19.3

6.7 ± 1.0

84.9 ± 23.2

MP-PS

137.5 ± 10.7

179.8 ± 4.4

98.9 ± 1.6

84.5 ± 2.2

–

80.5 ± 3.1

21.4 ± 16.3

7.2 ± 1.0

82.9 ± 23.0

  1. FTA, femorotibial angle; α, angle of the distal femoral end; β, angle of the proximal tibial end; γ, femoral flexion angle; δ, posterior tibial slope; WBL Weight bearing line; KSS 2011 2011 Knee Society Score; MP Medial pivot; CS Cruciate-substituting; PS Posterior-stabilized. There was no significant difference between the two MP groups (unpaired t-test and Mann-Whitney U test, significance level < 5%)
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