Histomorphometric Analysis of Callus Formation Stimulated by Axial Dynamisation in a Standardised Ovine Osteotomy Model

Table 1

Treatment groups and stimulation regimen.

Group	Evaluated Animals (n)	Excluded Animals (n)	Fixation Device	Mechanical Stimulation
0.0 mm group	6	0	unilateral external fixator	no stimulation
0.2 mm group	6	1	unilateral external fixator	1200 cycles/day with 1 Hz, amplitude 0.2 mm
0.4 mm group	7	2	unilateral external fixator	1200 cycles/day with 1 Hz, amplitude 0.4 mm
0.8 mm group	8	2	unilateral external fixator	1200 cycles/day with 1 Hz, amplitude 0.8 mm
control group	4	5	unilateral external fixator AND unilateral monotube external fixator	no stimulation
Total	31	10