Effect of limb rotation on radiographic alignment measurement in mal-aligned knees

Table 4 Correlation coefficients between the knee deformity and alignment measurement errors

Correlation coefficient	Knee flexion (non-weight-bearing)	Coronal deformity (non-weight-bearing)	Coronal deformity (weight-bearing)
Deviation range of HKA	0.933**	0.307*	0.635**
Deviation range of FTA	0.861**	0.504**	0.639**

The deviation range of HKA and FTA are specific parameters representing the measurement error of mechanical and anatomical alignment, respectively. The correlation coefficient greater than 0 indicates a positive correlation
*Correlation is significant at 0.05 level (two-tailed)
**Correlation is significant at 0.01 level (two-tailed)

ISSN: 1475-925X