Featured Publications & Reports

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Biological Response to Ceramic-on-Carbon-Fibre-Reinforced-PEEK from Total Hip Replacements

This study aims to investigate the wear performance of a ceramic on CFR-PEEK total hip replacement in a 10 million cycle cimulator study. The wear debris products were characterized and compared to the debris generated in an UHMWPE-on-ceramic THR. Then the osteolytic potential of the CFR-PEEK and UHMWPE wear debris was assessed.

Effect of Contact Pressure on the Wear of PEEK and CFR-PEEK Materials Against Metallic Counterfaces

 Total joint replacement has been a successful surgical intervention for many years, with the majority of bearing joints having ultra-high molecular weight polyethylene as an articulating material. However, concerns remain regarding wear debris induced osteolysis and the longevity of TJR as patient demands change.

Effects of Mold Temperature on the Properties of HA Whisker Reinforced PEEK

Porous and bioactive polyetheretherketone (PEEK) scaffolds have potential to replace metallic scaffolds for biologic fixation of permanent implants adjacent to trabecular bone, such as interbody spinal fusion devices. The objective of this study was to investigate the effects of the mold temperature and PEEK powder on the mechanical properties and crystallinity of hydroxyapatite (HA) whisker reinforced PEEK scaffolds prepared using compression molding and porogen leaching. The results of this study suggested that HA reinforced PEEK scaffolds should be compression molded at 370-375°C. The apparent compressive modulus, yield strength, and yield strain for scaffolds molded at 370-375°C was 75-92 MPa, 2.0-2.2 MPa, and 2.5-3.6%, respectively, which was within the range exhibited by human vertebral trabecular bone.

PEEK in Spine Expert Round Table Presentation: Review of PEEK Rod Systems in the Literature

This presentation by Gilles Laroque discusses four recent journal publications related to PEEK rods. The available biomechanical and short-term clinical studies suggest that PEEK rods may offer clinical benefits, but additional long term studies are necessary.

PEEK in Spine Expert Round Table Presentation: Biomechanical Comparison of Pedicle Screw Systems with Titanium and PEEK Rods

This presentation by Dr. Anand Agarwal reviews a series of experiments on Ti vs. PEEK rod systems in normal and osteoporotic bone. The researchers found that PEEK rod systems change motion as compared with Ti rod systems. An unexpected finding was that screw pull-out strengths for PEEK rod systems was higher than in Ti systems for osteoporotic bone. Preliminary biomechancial data was also presented on PEEK screws for use in pedicle-based systems.

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