| 摘要 |
<p>A graft fixation device (10), system and method are disclosed for reconstruction or replacement of a ligament or tendon preferably wherein a soft tissue graft or a bone-tendon-bone graft is received and implanted in a bone tunnel. The graft fixation system includes a fixation device (10) comprising a threaded body (12) which is rotatably connected to a graft interface member (14). One embodiment of the implant/graft interface member (14) includes an enclosed loop (32) for holding a soft tissue graft. Another embodiment of the interface member (114) includes a bone cage comprising a cage bottom (119) and removable cage top (121) to hold a bone block at one end of a bone-tendon-bone (BTB) graft. An additional embodiment of the interface member (214) includes a one-piece bone cage (217) which may be crimped or stapled to a bone block. The fixation device (10, 110, 210, 310) holds a graft in centered axial alignment in a bone tunnel. The body portion (12) of the fixation device may be turned without imparting substantial twist to a graft attached to the device, due to the rotatable coupling (38) between the threaded body (12) and the interface member (14, 114, 214,314). The fixation device may be installed using a driver tool (26) that has a shaft (254) and an outer sleeve (256), wherein the driver (26) may be used to twist the fixation device (10, 110, 210, 310) and independently exert a pushing or pulling force thereto. The graft fixation method may be used to install a fixation device (10, 110, 210, 310) by pulling or pushing it into a prepared bone tunnel while minimizing the possibility of abrasion or other damage to a graft attached to the fixation device.</p> |
