Table 3.

MRI T2 relaxation time values in deep, intermediate and superficial zone of cartilage at the site of regrowth and also at a site of native cartilage. Native cartilage values were recorded over a normal region of cartilage in the mid portion of the talar dome and served as a control

	MRI T2 relaxation times (mean milliseconds with average SD in brackets)
	3 months	12 months	24 months	Native cartilage at 24 months (control)
Deep zone	110 (120)	100 (110)	80 (40)	70 (20)
Intermediate zone	70 (40)	65 (30)	60 (40)	50 (10)
Superficial zone	55 (18)	50 (20)	45 (15)	40 (10)
Overall	80 (80)	75 (60)	65 (30)	55 (15)