Dyslipidaemia for patients with low-energy femoral neck fractures after the treatment of cancellous screws: a retrospective study with a 3-year minimum follow-up

Table 2 Comparison of the treatment of patients with femoral neck fractures between groups

Variable	AVNFH (n = 135)	Control (n = 142)	P - value
HHS	76.9 ± 6.65	79.2 ± 10.0	0.02^*a
Garden classification			0.73^*b
I	30	35
II	28	37
III	53	43
IV	24	27
Injury operation interval			0.93^*b
< 24 h	21	25
24–48 h	39	48
48–72 h	41	32
> 72 h	34	37
Weight-bearing activity time (<8 months/≥8 months)	46/89	50/92	0.84^*c
Mechanical failure	17.8% (24/135)	8.9% (13/142)	0.04^c

^*Not statistically significant. ^aAnalysed using an Independent-Samples t-test; ^bAnalysed using the Mann-Whitney test; ^cAnalysed using the Chi-square test. AVNFH Avascular necrosis of the femoral head, HHS Harris Hip Score