Dissociation of the tibial component in total knee replacements.

Davis, P F; Bocell, J R; Tullos, H S · Clin Orthop Relat Res · 1991

case_report · Level V

Where this comes from

Abstract

Dissociation of the polyethylene component from its metal backing in total knee arthroplasty is a recognized problem regarding the patella. Two cases of dissociation of the metal-backed tibial component from its polyethylene articulating surface presented symptoms of prosthesis failure: persistent pain, swelling, sensations of instability, and gait difficulty. Investigations ruled out prosthesis malalignment, loosening, and sepsis. Precise diagnosis of dissociation of the tibial component was made by diagnostic arthroscopy.

Medical subject headings

Anatomy