Table 4 Pearson correlation coefficients between HKA measured by X-ray and Opti-Knee

X-ray

2.04 ± 2.48

10.58 ± 5.41

5.92 ± 5.89

0.11 ± 1.65

2.91 ± 5.02

1.27 ± 3.71

3.68 ± 5.46

[-5.12-5.75]

[-7.39-22.46]

[-7.39-22.46]

[-2.86-2.98]

[-7.59-11.12]

[-7.59-11.12]

[-7.11-22.46]

Opti-knee

2.21 ± 2.25

10.68 ± 5.61

6.07 ± 5.91

0.17 ± 1.75

2.92 ± 4.86

1.31 ± 3.65

3.76 ± 5.47

[-4.60-7.10]

[-7.27-24.68]

[-7.28-24.68]

[-3.10-3.90]

[-7.45-11.05]

[-7.45-11.05]

[-7.45-24.68]

Pearson

0.784**

0.976**

0.971**

0.970**

0.789**

0.84**

0.948**

Sig

0.000

0.000

0.000

0.000

0.000

0.000

0.000