Table 2. Average principal strains in femoral cartilage contact regions.

Principal strain changes were observed in the femoral condyle following placement of a critical sized defect.

	Normal			Defect			Percentage Point (i.e., Defect-Normal)
	Ep1	Ep2	Esm	Ep1	Ep2	Esm	Ep1	Ep2	Esm
Sheep 1	7.9%	−5.4%	6.6%	10.9%	−21.1%	16.0%	3.1	−15.7	9.4
Sheep 2	5.4%	−14.8%	10.1%	12.5%	−14.6%	13.5%	7.1	0.2	3.4
Sheep 3	10.4%	−4.5%	7.5%	11.6%	−28.9%	20.3%	1.3	−24.4	12.8
Sheep 4	1.0%	−2.4%	1.7%	16.4%	−16.1%	16.3%	15.4	−13.7	14.6
Average	6.1%	−6.8%	6.5%	12.8%	−20.2%	16.5%	6.7	−13.4	10.0

Percentage Point data were calculated from differences in raw data, and then rounded for presentation.