Polyethylene particle morphology in synovial fluid of failed knee arthroplasty.

摘要: Synovial fluid from the knees of 16 patients undergoing revision knee arthroplasty for aseptic failure was subjected to base digestion and ultrafiltration. Filtered particles were scanned using scanning electron microscopy analyzed with an image program. Polyethylene identified visually confirmed use diffraction spectroscopy. Averaging more than 1500 per patient sample, 25,148 analyzed. This corresponded a concentration 3000 polyethylene milliliter synovial fluid. Three populations wear debris in Small globular mean area 75 mu 2 represented 94% all observed. The averaged 10 diameter often seen clumps. Long fibrous 1164 made up 4% particle population. Large rhomboidal 557 observed least commonly comprised remainder visualized. All three types each sample regardless pattern retrieved liner. There no differences absolute counts, morphologic characteristics, or size between without gross wear.