Table 2.

Morphologic MRI Evaluation

Case	Age at MRI	Defect Filling (%)	Interface	Surface	Edema	Effusion	AOFAS	RT T2	RC T2	rT2
5	36	100	Complete	Intact	None	No	Good	25	28	0.89
6	35	100	Complete	Intact	Severe	Yes	Fair	37	47	0.78
9	35	75-100	Complete	Intact	Minor	No	Good	29	34	0.88
14	37	75-100	Complete	<50% of RT depth	Moderate	No	Excellent	25	35	0.72
15	36	100	Complete	Intact	Moderate	Yes	Excellent	23	27	0.87
12	27	>100	Complete	Intact	Moderate	No	Good	33	41	0.80
7	21	>100	Complete	<50% of RT depth	None	Yes	Fair	41	44	0.93
4	34	>100	Complete	Intact	Minor	Yes	Good	43	34	1.26
17	24	>100	Complete	Intact	Minor	Yes	Excellent	22	46	0.49
Mean	31.7							30.9	37.3	0.85
Standard deviation	6.0							7.9	7.5	0.21
Min	21							22	27	0.49
Max	37							43	47	1.26

AOFAS = American Orthopaedic Foot and Ankle Score; MRI = magnetic resonance imaging; RC = reference cartilage; RT = repair tissue; rT2 = relative T2.