Hip Arthroplasty

Hip cups offer a great example of how our biomaterials can help improve wear performance and delivery anatomical fit.

Our durable biomaterial addresses the need for new, longer-lasting designs for younger and more active patients. Excellent wear resistance and exceptional structural strength make it an ideal choice for hip cups that support bone-conserving concepts.1, 2, 3

PEEK-OPTIMATM Wear Performance offers an alternative load-bearing material to metal designed to address metal ion concerns. It features a modulus similar to human bone, which reduces stress shielding and leads to improved physiological loading.4

PEEK-OPTIMATM Wear Performance accommodates both standard and new implant fixation technologies. It is radiolucent and compatible with common imaging technologies. This allows improved visualization for placement and post-operative follow up in the months and years after surgery.5

  • An acetabular cup bearing against a 54mm ceramic head showed a wear rate of approximately 1mm3/million cycles;1
  • Screening tests and hip and knee simulator tests indicate that extremely low wear can be achieved against metal and ceramic counterfaces.2
  • Implantation in a clinical trial as an a acetabular liner produced no adverse reports of wear biocompatibility.4
  • Use as a very thin acetabular bearing provides anatomical stress distributions; fixation has been achieved by titanium and/or hydroxyapatite coatings5

References:

  1. Scholes, S. C., Inman, I. A., Unsworth, A., Jones, E. Tribological assessment of a flexible carbon-fiber-reinforced poly (ether-ether-ketone) acetabular cup articulating against an alumina femoral head. Proc. Instn. Mech. Engrs. Part H, Journal of Engineering in Medicine, Vol. 222, Number 3, 2008, pp. 273-283(11).
  2. Scholes, S. C. and Unsworth, A. Pitch-based carbon-fiber-reinforced poly (ether–ether–ketone) OPTIMA™ assessed as a bearing material in a mobile bearing unicondylar knee joint. Proc. Instn. Mech. Engrs. Part H, Journal of Engineering in Medicine, Vol. 223, H1, 2009, pp. 13-26.
  3. Pace, N., Spurio, S., Pavan, L., Rizzuto, G., and Strecher, R.M. Clinical Trial of a New CF-PEEK Acetabular Insert in Hip Arthroscopy. Abstracts from the European Hip Society 2002 Domestic Meeting.
  4. Manley, M., Ong, K., Kurtz, S., Rushton, N., and Field, R. Biomechanics of a PEEK horseshoe-shaped cup: Comparisons with a predicate deformable cup. Paper C655/058. Institution of Mechanical Engineers, “Engineers & Surgeons: Joined at the Hip,” London, April 19-21, 2007.
  5. Supportive information available on request.

Applications

Learn about other ortho applications


Receive the latest clinical evidence and data for PEEK-OPTIMA based applications


By completing this form you are signing up for marketing updates. You will receive targeted messages such as newsletters, tradeshow, webinar and event announcements from Invibio, a member of the Victrex Group. You can unsubscribe at any time. Visit our Privacy Policy to learn more.
The materials on this site are intended for Health Care Professionals and industry users only. If you are a patient, click here, otherwise, click continue.