Table 2.

Sodium concentrations (mM) calculated from conventional sodium MRI and sodium-inversion recovery MRI for repair tissue, adjacent native cartilage tissue, and native cartilage tissue within the non-surgical compartment (non-surg). P values for comparisons between repair and adjacent native tissue and between native adjacent tissue and native tissue within a non-surgical compartment are shown

		[Na+] in mM			[Na+] in mM measured from IR
Subject No.	Procedure	Repair	Native adjacent	Native non-surg	Repair	Native adjacent	Native non-surg
1	Mfx	174.1 ±15.5	154.3 ±4.9	168.5 ±10.5	135.4 ±9.2	194.9 ±12.4	234.0 ±17.7
2	Mfx	113.1 ±19.7	126.2 ±35.4	176.4 ±12.5	65.9 ±13.1	232.2 ±72.1	299.5 ±11.7
3	SG	131.4 ±12.5	117.3 ±24.2	213.5 ±14.4	113.0 ±7.3	172.9 ±20.5	285.1 ±16.5
4	Mfx	154.3 ±25.5	168.4 ±12.7	162.5 ±17.9	120.5 ±32.3	212.2 ±19.5	279.7 ±22.8
5	JCI	182.7 ±5.7	202.7 ±32.3	154.7 ±8.2	78.7 ±6.1	217.1 ±13.8	274.5 ±22.9
6	OAllo	265.6 ±17.5	187.0 ±3.4	200.8 ±18.9	153.8 ±15.7	207.2 ±13.4	295.3 ±15.8
7	SG	283.9 ±59.1	238.7 ±24.1	219.3 ±16.6	72.6 ±20.1	140.9 ±27.3	255.2 ±29.0
8	OAuto	190.4 ±57.7	156.1 ±24.8	125.8 ±34.1	94.3 ±35.7	201.6 ±48.8	257.3 ±24.7
9	DFR	150.9 ±10.5	162.5 ±20.5	175.3 ±8.1	120.8 ±22.4	217.8 ±30.3	270.7 ±19.7
10	Mfx	126.2 ±14.3	173.7 ±19.5	168.3 ±21.6	96.4 ±19.5	141.0 ±8.1	136.3 ±22.4
11	MACI	183.8 ±16.4	154.2 ±12.6	129.6 ±6.1	146.7 ±27.7	255.4 ±30.8	222.0 ±20.0
Mean		177.8	170.1	172.2	108.9	204.6	249.8
Standard deviation		±54.1	±40.7	±30.3	±29.8	±34.7	±44.6
P value: repair vs native adjacent		0.59			0.0000035
P value: native adjacent vs native non-surg			0.89			0.015