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Table 1 Pre-operative demographic data

From: Influence of navigation system updates on total knee arthroplasty

 

Version 3.1 group

Version 4.0 group

P-value

Number of patients

33

49

 

Sex (female/male)

30/3

43/6

 

Diagnosis (OA/others)

31/2

47/2

 

Age (years)

75.0 ± 5.0

75.5 ± 5.1

n.s.

Pre-operative KSS

37.9 ± 10.5

36.4 ± 10.1

n.s.

Maximum extension (°)

−9.8 ± 7.2

−11.8 ± 7.1

n.s.

Maximum flexion (°)

120.1 ± 16.4

119.2 ± 15.7

n.s.

Body mass index (kg/m2)

26.2 ± 3.7

26.1 ± 4.1

n.s.

Pre-operative FTA (°)

185.8 ± 6.9

186.1 ± 9.6

n.s.