Table 3.

Patency of infrapopliteal grafts. all series published since 1981.30

Graft and Patency Type	Primary Patency (%)
	1-Mo	6-Mo	1-Yr	2-Yr	3-Yr	4-Yr
Primary Patency
Reversed saphenous vein	92	81	77	70	66	62
In situ vein bypass	94	84	82	76	74	68
Secondary Patency
Reversed saphenous vein	93	89	84	80	78	76
In situ vein bypass	95	90	89	87	84	81
Arm vein	94		73	62	58
Human umbilical vein	80	65	52	46	40	37
Polytetrafluoroethylene	89	58	46	32		21