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Table 2 Comparison of the between-group postoperative alignment and components position at 2-year follow-up

From: Slight femoral under-correction versus neutral alignment in total knee arthroplasty with preoperative varus knees: a comparative study

 

Neutral group

(n = 128)

Under-correction group

(n = 128)

P

HKA angle (mean ± SD)

-0.68°±3.35°

-2.56°±2.81°

<0.001a

FFC (mean ± SD)

90.37°±2.33°

91.94°±1.98°

<0.001a

FTC (mean ± SD)

89.72°±2.00°

89.44°±2.10°

0.264a

TCS (mean ± SD)

5.16°±3.80°

5.35°±2.59°

0.633a

HKA angle <-3°or >3° (n)

42

53

0.155b

FTC<87°or >93° (n)

14

18

0.450b

  1. HKA hip-knee-ankle, FFC frontal femoral component angle, FTC frontal tibial component angle, TCS tibial component slope angle. For HKA angle, varus was negative and valgus was positive; for TCS, retroversion was positive and anteversion was negative
  2. a stands for student t-test
  3. b stands for chi-square test; data are recorded as number or mean ± standard deviation