Cross-linked Compared with Historical Polyethylene in THA: An 8-year Clinical Study

Cross-linked compared with historical polyethylene in THA: an 8-year clinical study.

UNLABELLED Wear particle-induced osteolysis is a major cause of aseptic loosening in THA. Increasing wear resistance of polyethylene (PE) occurs by increasing the cross-link density and early reports document low wear rates with such implants. To confirm longer-term reductions in wear we compared cross-linked polyethylene (irradiation in nitrogen, annealing) with historical polyethylene (irradi...

Clinical Value Dossier for Longevity Highly Cross-linked Polyethylene

Cross-linked Polyethylene Engineered for TKA

Introduction It is well known that the wear resistance of ultra-high molecular weight polyethylene (UHMWPE) improves in proportion to the crosslinking irradiation dose. It is also well known that the mechanical properties and oxidative stability of UHMWPE are affected by the irradiation dose, resin type, and post-irradiation heat treatment, among others factors. Therefore, careful consideration...

[Polyethylene particles in synovial fluid after knee arthroplasty with a conventional or highly cross-linked polyethylene. Preliminary study].

AIM OF THE STUDY In recent years cross-linked polyethylenes have been developed in an attempt to reduce the wear, as has been demonstrated in knee simulators. The aim is to assess, by counting particles of polyethylene in synovial fluid, whether the reduction in wear is confirmed in patients with a highly crosslinked polyethylene prosthesis. MATERIAL AND METHODS A prospective randomised study...

An Improved Technique Using the Martell Method with Ellipse Fitting: a Comparitive Study Using a Minimum 5 Year Follow-up of Highly Cross-linked Polyethylene

+*Bragdon, C.R; *Greene, M.E; **Martell, J.M; *Geller, J.A.; Kwong, M; *Harris, W.H.; *Malchau, H. +*Orthopaedic Biomechanics and Biomaterials Laboratory, Massachusetts General Hospital, Boston, MA 02114 617-726-3869 fax: 617-726-3883 [email protected] Introduction Highly cross-linked polyethylene has been used as the bearing surface of total hip arthroplasty for over 6 years. Several repor...