Analysis on risk factors for neck shortening after internal fixation for Pauwels II femoral neck fracture in young patients

Table 2 Comparison of patient characteristics between the two groups

Factors	n	Shortening group	Non-shortening group	χ²	p
Age (years)
18–44	65	14	51	5.086	0.024
45–59	57	23	34
Sex
Male	83	30	53	4.157	0.041
Female	39	7	32
BMD
T > − 2.5	75	17	58	5.408	0.020
T ≤ − 2.5	47	20	27
BMI (kg/m²)
< 24.0	60	12	48	8.745	0.012
24.0 ≤ BMI < 28.0	44	15	29
≥ 28.0	18	10	8
Fracture type
Type I, II	33	19	14	15.895	0.000
Type III, IV	89	18	71
Posterior medial cortex comminution
Yes	82	32	50	8.952	0.002
No	40	5	35
Reduction quality
Grade I, II	77	15	62	11.625	0.000
Grade III, IV	45	22	23
Surgical time (h)
≤ 24	79	23	56	0.156	0.692
> 24	43	14	29
Time to weight-bearing (months)
≤ 2	91	27	64	0.073	0.787
> 2	31	10	21
Hospitalization time (week)
≤ 1	75	22	53	0.091	0.762
> 1	47	15	32

ISSN: 2047-783X