Comparison of Ordinary Cannulated Compression Screw and Double-Head Cannulated Compression Screw Fixation in Vertical Femoral Neck Fractures

Table 1

Patient demographics and clinical characteristics.

	OCCS	DhCCS
Number	54	27	—
Age (years old)			0.372^a
Sex (M/F)	30/24	17/10	0.524^b
Hip (R/L)	31/23	16/11	0.874^b
Follow-up period (month)			0.803^a
Pauwel’s angle (°)			0.807^a

Data are expressed as the mean ± standard deviation unless stated otherwise. ^aIndependent sample -test. ^bChi-square test.