Meniscus Prosthetic Devices with Anti-Migration or Radiopaque Features

摘要

A prosthetic device for use as an artificial meniscus is disclosed. The prosthetic device restores stress distribution, stability, and function to the knee joint after removal of the damaged natural meniscus. In some embodiments, the prosthetic device includes an anti-migration feature that inhibits extreme movement within the joint while permitting free floating over a significant range. In one aspect, the anti-migration feature is an enlarged anterior structure or a posterior meniscus remnant engaging channel while in another aspect, the anti-migration feature includes a tethering member. Still further, removable radiopaque features are provided to enhance trialing of the implant prior to final implantation within the joint.

主权项

1. A prosthetic meniscus device for placement in a joint, comprising:
a meniscus body portion having an upper surface for engagement with a first bone defining the joint and an opposing lower surface for engagement with a second bone defining the joint, the meniscus body portion formed of a polymer and having a sidewall extending between the upper surface and the lower surface, the sidewall defining a perimeter of the meniscus body portion; and a radiopaque member positioned along at least a portion of the perimeter and retained in position by a releasable attachment mechanism.