Using Three-Dimensional Computational Modeling to Compare the Geometrical Fitness of Two Kinds of Proximal Femoral Intramedullary Nail for Chinese Femur

Table 2

The average fitness value on the middle and distal portion of the implant (mm).

	InterTan (𝑛=64)	PFNA-II (𝑛=52)	𝑃 value
Impingement thickness on the middle shaft of the femur	2.11 ± 0.36	1.62 ± 0.38	0.073
Impingement length on the middle shaft of the femur	60.62 ± 8.37	58.48 ± 7.38	0.361
Distance from the top of the great trochanter to the central of the impingement area	154.43 ± 7.72	148.74 ± 8.87	0.652
Distance between the nail and the inner cortex in the lateral view	4.17 ± 0.35; (𝑛=120)	6.95 ± 0.68; (𝑛=120)	0.035