Surgical technique using a contoured allograft cartilage as a spacer of the carpo-metacarpal joint of the thumb or tarso-metatarsal joint of the toe

摘要

A spacer for implantation into a subject is provided that includes a sterilized piece of cartilaginous allograft tissue. The piece forms a Y-shape with a base adapted to insert within a first carpo-metacarpal joint or carpo-metatarsal joint of the subject, and has a first area adapted to secure to a trapezium bone adjoining the joint, and a second arm adapted to secure to a proximal metacarpal or metatarsal bone adjoining the joint. A procedure for implanting the spacer includes exposing a target joint and abrading a bone surface interior to the joint to induce surface bleeding. The spacer base is then inserted into the joint. The spacer first arm is adhered to the first bone of the joint and the spacer second arm is adhered to the second bone of the joint. A kit is also provided for surgical implantation of the spacer.

主权项

1. An implant for implantation into a subject comprising: a sterilized piece of cartilaginous allograft tissue harvested from a cadaver from a knee meniscus, a mandibular condyle of the temporomandibular joint, or intervertebral disks, the piece forming a Y shape with a base sized to insert within a first carpo-metacarpal joint of the subject;
a first arm adapted to secure to a trapezium bone adjoining the joint; and a second arm adapted to secure to a proximal metacarpal bone adjoining the joint.