Figure 6. (a) Lateral abdominal radiograph showing the superior extent of this stent-graft lying at the level of the L1/2 disc (arrow). This stent-graft is composed of individual nitinol wires attached to the graft material. The individual serpentine graft wires are not sutured together unlike the device shown in Figure 5b. The separation of thestents in this device is a normal feature and is not owing to suture breakage. (b) 2 years later the stent-graft has migrated distally and the top stent now lies at the level of the lower L2 vertebral body (arrow). There is angulation of the device anteriorly owing to some buckling as the proximal end migrated distally.