TABLE I.

Comparison of Outcome Parameters Between the Standard Locking Plate Group and the Active Locking Plate Group

Parameters	Standard Locking Plate Group*	Active Locking Plate Group*	Difference	P Value
Sheep characteristics
Weight (kg)	71 ± 9	65 ± 5	−8%	0.21
Age (mo)	24 ± 1	25 ± 2	1%	0.58
Construct stiffness (N/mm)
In compression ≤700 N	6239 ± 740	667 ± 161	−89%	<0.001
In compression >700 N	5023 ± 420	1805 ± 116	−64%	<0.001
Callus volume from tomography scans (cm3)
Total	6.0 ± 1.8	13.0 ± 2.7	117%	<0.001
Anterior	1.3 ± 0.9	4.5 ± 2.0	252%	0.006
Posterior	1.0 ± 0.6	2.5 ± 0.8	147%	0.004
Lateral	3.0 ± 0.5	4.4 ± 0.5	46%	<0.001
Mechanical properties, absolute
Peak torsion (Nm)	28 ± 25	72 ± 9	157%	0.006
Rotation to failure (deg)	7 ± 2	16 ± 1	131%	<0.001
Energy to failure† (Nm × deg)	134 ± 152	669 ± 105	399%	<0.001
Mechanical properties, normalized‡
Peak torsion (Nm)	34 ± 30	87 ± 11	156%	0.003
Rotation to failure (deg)	42 ± 12	92 ± 8	119%	<0.001
Energy to failure† (Nm × deg)	17 ± 17	81 ± 9	371%	<0.001
Mechanical properties, contralateral§
Peak torsion (Nm)	80 ± 12	83 ± 11	4%	0.62
Rotation to failure (deg)	16 ± 2	17 ± 1	8%	0.21
Energy to failure† (Nm × deg)	738 ± 156	825 ± 108	12%	0.30

^*The values are given as the mean and the standard deviation.

^†These results represent the area under the torsion-rotation curve.

^‡These values were the percentage of the contralateral tibiae.

^§These values were for the contralateral tibiae of the standard locking plate and active locking plate groups, provided for reference only.