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Table 2 Measurements of femur anterior condyle width and distance from “a” to “b” by CT scanning and intraoperative measurement

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

Indexes

CT measurement

Intraoperative measurement

P-value

Width of femur anterior condyle, cm

5.41 ± 0.33

5.43 ± 0.43

0.200

95 % CI: 5.32–5.52

95 % CI: 5.31–5.55

Distance from “a” to “b” (a–b), cm

-0.09 ± 0.17

0.05 ± 0.15

0.078

95 % CI: -0.04–-0.14

95 % CI: 0.01–0.09

  1. Distance a–b was the distance from the lowest point of trochlear groove to the midpoint of anterior condyle osteotomy line