Information for Medical Professionals

All-polyethylene components are comparable to their metal counterparts

The use of all-polyethylene components during total knee arthroplasty has comparable or better results to arthroplasties conducted with metal-backed components.

According to an article published in the Journal of Bone and Joint Surgery, numerous mid and long-term studies, radiostereometric anylses and prospective randomized trials all point towards the efficacy of polyethylene components.

The authors of the piece claimed that the advantages of an all-polyethylene tibial component over a metal-backed modular component include lower cost and avoidance of backside wear

Disadvantages of an all-polyethylene tibial component include a lack of modularity and limited intra-operative options – such as no option for liner removal in the setting of acute irrigation and the inability to offer late liner exchange.

In conclusion, the researchers behind the article said: "Primary total knee arthroplasty with a modern all-polyethylene design can be done in many patients, with substantial cost savings across the health-care system."

According to radiologist Metin Gurcan, the latest developments in knee imaging software can improve surgical outcomes.

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