Dissociation of the tibial component in total knee replacements.
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.
Division of Orthopedic Surgery, Baylor College of Medicine, Houston, Texas 77030.
P F
PF
Davis
J R
JR
Bocell
H S
HS
Tullos
D000328:Adult; D001182:Arthroscopy; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D011475:Prosthesis Failure; D016059:Range of Motion, Articular; D012086:Reoperation; D013977:Tibia