Table 2. Mechanical analysis of cortical bone.

	Sham	ORX
Maximum loading force (N)	177 ± 12	178 ± 8
Displacement at maximum load (mm)	0.85 ± 0.29	0.86 ± 0.29
Bone stiffness (N/mm)	248 ± 63	225 ± 34
Energy at maximum load (mJ)	79 ± 23	91 ± 26
Ultimate stress (MPa)	74 ± 9	86 ± 9

Male Wistar rats were subjected to sham operation or orchiectomy (ORX). Four weeks after surgery, animals were sacrificed, and their femurs were collected. Mechanical analyses of these cortical bones were carried out using a four-point-bending test. The maximum force, displacement at the maximum force, stiffness, energy of the maximum force, and ultimate stress were calculated and statistically analyzed. Each value represents the mean ± SD of three independent determinations.