Table 2.

Averaged orientation-dependent zonal T2, T1ρ and T1 relaxation times based on the zone division data in Table 1. (a) humeral cartilage (n = 10 specimens) and (b) femoral cartilage (n = 3 specimens). Data are in mean ± standard error. RZ-I and RZ-II are the top and bottom equal-halves of the radial zone.

(a) Humeral cartilage
Zones	T2 (ms)		T1ρ (ms)		T1 (s)
	0°	55°	0°	55°	0°	55°
SZ	20.46 ± 1.55	51.31 ± 3.87	86.32 ± 2.92	88.82 ± 3.97	1.25 ± 0.02	1.32 ± 0.02
TZ	37.96 ± 1.66	58.99 ± 2.75	92.49 ± 3.12	93.60 ± 3.52	1.21 ± 0.02	1.21 ± 0.01
RZ-I	12.04 ± 0.58	62.94 ± 2.91	90.84 ± 2.67	103.63 ± 2.67	1.26 ± 0.03	1.27 ± 0.02
RZ-II	7.24 ± 0.61	37.55 ± 1.93	53.97 ± 2.27	65.67 ± 1.85	0.95 ± 0.03	1.01 ± 0.02
(b) Femoral cartilage
Zones	T2 (ms)		T1ρ (ms)		T1 (s)
	0°	55°	0°	55°	0°	55°
SZ	17.16 ± 3.59	48.10 ± 7.47	68.34 ± 3.88	76.01 ± 5.77	1.18 ± 0.09	1.29 ± 0.08
TZ	33.30 ± 3.73	51.15 ± 1.82	76.30 ± 3.23	79.94 ± 4.72	1.21 ± 0.01	1.26 ± 0.04
RZ-I	10.90 ± 0.65	46.19 ± 3.60	82.32 ± 9.06	89.58 ± 1.06	1.23 ± 0.05	1.27 ± 0.03
RZ-II	4.30 ± 2.10	25.89 ± 2.50	35.63 ± 4.22	51.25 ± 2.19	0.75 ± 0.07	0.90 ± 0.06