Table 3.

Plastic deformation of bones.

Parameter measured	Bone studied
	Femoral diaphysis		Femoral neck		Proximal tibial metaphysis
	Animal group		Animal group		Animal group
	C  (n = 10)	E m  (n = 10)	C  (n = 10)	E m  (n = 10)	C  (n = 10)	E m  (n = 10)
Yield point force [N]	32.349 ± 4.703	34.828 ± 4.614	96.618 ± 9.221	95.840 ± 8.120	22.365 ± 2.001	24.028 ± 4.614
Yield point strain [mm]	0.615 ± 0.077	0.648 ± 0.087	0.832 ± 0.054	0.875 ± 0.095	0.315 ± 0.047	0.318 ± 0.087
Yield point energy [mJ]	5.254 ± 0.556	5.365 ± 0.596	38.03 ± 4.08	38.06 ± 4.20	7.354 ± 0.606	7.565 ± 0.786
Yield point stress [MPa]	19.895 ± 2.093	22.807 ± 2.031	—	—	15.295 ± 1.693	14.807 ± 2.431
Yield point time [s]	—	—	83.221 ± 5.458	85.111 ± 6.002	—	—
Maximum bending force [N]	46.841 ± 5.826	48.077 ± 4.169	98.107 ± 7.723	97.982 ± 8.477	36.541 ± 4.016	36.077 ± 4.169
Strain at maximum bending force [mm]	0.992 ± 0.163	1.020 ± 0.143	0.840 ± 0.042	0.849 ± 0.097	1.092 ± 0.173	1.020 ± 0.143
Energy at maximum bending force [mJ]	46.351 ± 5.309	43.325 ± 5.066	34.07 ± 5.10	37.02 ± 5.40	30.051 ± 4.309	33.325 ± 5.066*   (P = 0.0446)
Stress at maximum bending force [MPa]	47.065 ± 3.578	5.926 ± 5.139	—	—	30.065 ± 3.578	25.996 ± 2.139*   (P = 0.0443)
Time at maximum bending force [s]	—	—	84.032 ± 4.245	84.942 ± 8.677	—	—

The results are presented as arithmetic mean ± standard deviation (x ± σ _n−1).

n: number of rats in a group (male rats of Wistar strain, 10 weeks old, in the beginning of the experiment).

^*Statistically significant difference in relation to control group (dependent t-test).