Instrumentation for the preparation and transplantation of osteochondral allografts

摘要

Procedures and instruments for preparing and transplanting osteochondral allograft plugs to a host bone to repair an articular cartilage defect. An allograft bone plug having a cartilage plate and cancellous bone tissue attached thereto is removed from a donor bone. The allograft plug is further shaped by removing or cutting away cancellous bone tissue to form a cancellous stalk extending from the cartilage plate. At the recipient site of the host bone, a cutout is formed corresponding in shape to the allograft plug. The allograft plug is inserted into the cutout such that the cancellous stalk is retained in the host bone and the cartilage plate aligns with the condyle surface of the host bone.

主权项

1. A system for preparing a recipient site on a host bone comprising:
an osteochondral allograft; a template including a plate having a first surface and a second surface generally parallel to the first surface, a plurality of sharp teeth protruding from the first surface, an engagement structure protruding from the second surface, and a centrally disposed guide aperture; an elongated guide pin adapted to be received in the guide aperture; a cannulated drill bit, burr, or cutting disk adapted to receive the guide pin within a cannula thereof and slide onto the guide pin, and including a cutting body extending from a circular counter-bore forming element at a proximal end of the cannulated drill bit, burr, or cutting disk, the circular counter-bore forming element including first cutting members extending towards the cutting body; and a detachable handle detachably engageable with the engagement structure such that when engaged, the handle extends from only the second surface of the template, the handle disposed along an axis of the guide aperture so as to be configured to receive the guide pin through the handle when the guide pin is inserted through the guide aperture.