Effect of altered proximal femoral geometry on predicting femoral stem anteversion in patients with developmental dysplasia of the hip

Table 3 The Pearson’s correlation between the proximal femoral anatomical parameters and the postoperative stem anteversion at three levels in two groups. In the CF group, all anatomical parameters statistically correlated with the postoperative stem anteversion. In the non-CF group, only the FA-LFN had a strong positive correlation

		FA-MFN	FA-LFN	FA-CLT	CF-LFN	CF-CLT
The CF group	R	0.607	0.686	0.744	0.828	0.811
The CF group	p value	0.004**	0.001**	< 0.001**	0.001**	< 0.001**
Regression formula*	Slope	0.941	0.807	0.976	0.777	1.035
Regression formula*	y-intercept	9.311	− 3.578	− 24.034	− 1.155	− 26.621
The non-CF group	R	0.486	0. 864	0.494	N.A.	N.A.
The non-CF group	p value	0.092	< 0.001**	0.086	N.A.	N.A.
Regression formula*	Slope	0.556	0.749	0.433	N.A.	N.A.
Regression formula*	y-intercept	9.256	− 1.433	1.327	N.A.	N.A.

N.A. not available
*The regression formula of the proximal femoral anatomical parameters (x, t., FA, and CF) and the postoperative stem anteversion (y) at three levels (MFN, LFN, and CLT) in the CF and non-CF groups were presented as y = ax + b; a: slope, b: y-intercept
**Indicates statistically significant correlation (p < 0.05)

ISSN: 1749-799X