Table 2. Comparison of Clinical and Radiological Factors between Posterior Sagging Group and Non-sagging Group.

Variable	Non-sagging group (n = 7)	Posterior sagging group (n = 6)	p-value
Age (yr)	55.1 ± 12.6	45.7 ± 5.9	0.120
Sex (male : female)	6 : 1	6 : 0	1.000
Right: left	4 : 3	3 : 3	1.000
Injury mechanism (high energy : low energy)	6 : 1	6 : 0	1.000
Comorbidity	2	0	0.462
LT over 1/2 involvement*	0	6	0.001
Operation time (min)	54.7 ± 9.3	71.8 ± 10.0	0.009
Blood loss (mL)	437.1 ± 70.6	618.3 ± 40.7	< 0.001
TAD (mm)	14.7 ± 1.7	13.8 ± 1.2	0.296
Reduction quality (good : acceptable)	5 : 2	0 : 6	0.021
Long LT sign	0	5	0.005

Values are presented as mean ± standard deviation or number.

LT: lesser trochanter, TAD: tip-apex distance.

^*Whether the head-neck fragment contained more than 1/2 of the lesser trochanter length.