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Table 1 Comparison between knee osteoarthritis and control group

From: Total knee arthroplasty using trochlear groove as guide for position of femoral component in severe knee osteoarthritis

Indexes

Knee osteoarthritis group

Control group

P-value

Sex (male/female)

16/34

24/26

0.102

Mean age (range), year

71.0 ± 5.8 (62–84)

45.5 ± 12.4 (22–65)

<0.001

Affected side (left/right)

33/17

29/21

0.410

Results of CT

   

Width of femur anterior condyle, cm

5.41 ± 0.33

5.37 ± 0.40

0.994

95 % CI: 5.32–5.52

95 % CI: 5.27–5.48

Distance from “a” to “b” (a–b), cm

-0.09 ± 0.17

0.00 ± 0.17

0.008

95 % CI: -0.04–-0.14

95 % CI: -0.47–0.52

  1. Data of continuous variables were shown as mean ± SD; Data of categorical variables were presented as proportions. CT: computed tomography. Distance a–b was the distance from the lowest point of trochlear groove to the midpoint of virtual anterior condyle osteotomy line