Hip replacement implant longevity

The durability of hip implants depends on many things, including your weight and activity level, as well as the implant’s bearing surface technology. The ‘bearing surface’ is the two parts of the hip that glide together throughout motion. Newer technologies, like ceramic and improved plastics, can improve implant longevity for younger patients.

X3®

Stryker’s patented advanced bearing surface, the X3®, has demonstrated up to 97% decrease in wear in laboratory testing.1 This decrease in wear may extend the life of your hip implant.

Ceramic

In laboratory testing, Biolox delta ceramic is up to 50% stronger than alumina ceramic.2 The strength of this material allows manufacturing of increased number of sizes of femoral heads so your doctor has a broader implant selection to choose the implant that fits you best.

Ceramic-on-ceramic

Alumina ceramic bearings have demonstrated significantly lower wear versus conventional plastic-on-metal hip systems in the laboratory.3 It is anticipated that the improved wear characteristics of alumina ceramic will result in a longer lasting implant.

Trident

The Trident acetabular cup is made from a titanium alloy, and is pressed into position during total hip replacement. Launched in Australia in 1999, over 54,000 have been used in patients undergoing total hip replacement. The Trident cup offered by Stryker is the most commonly implanted acetabular cup in Australia in 2012 (Table HT4).4 Over one million people globally have been implanted using the Trident cup.

The Trident cup accepts both ceramic and polyethylene liners which are then coupled with either a ceramic or metal head which is fixed to the femoral stem. Your surgeon will discuss with you which bearing option is most appropriate for your body. In Australia, the Trident cup has the lowest revision rate of any cementless acetabular cup when used in combination with SecurFit Plus femoral component (Table HT3)5 with around 96% of products still performing well after a minimum of 10 years follow up.

Find out more about indications, contraindications and risk information.

References
1. Stryker® Orthopaedics Trident® Acetabular Inserts made of X3® UHMWPE (unsterilized), 721-00-32E, show a 97% reduction in volumetric wear rate versus the same insert fabricated from N2\Vac™ gamma sterilized UHMWPE, 620-00-32E. The insert tested was 7.5mm thick with an inner diameter of 32mm. Testing was conducted under multi-axial hip joint simulation for 5 million cycles using a 32mm CoCr articulating counterface and calf serum lubricant. X3® UHMWPE Trident® Acetabular Inserts showed a net weight gain due to fluid absorption phenomena but yielded a positive slope and wear rate in linear regression analysis. Volumetric wear rates were 46.39 ± 11.42mm3/106 cycles for N2\Vac™ gamma sterilized UHMWPE inserts and 1.35 ± 0.68mm3/106 cycles for X3® UHMWPE (unsterilized) Trident® Acetabular Inserts. Although in-vitro hip wear simulation methods have not been shown to quantitatively predict clinical wear performance, the current model has been able to reproduce correct wear resistance rankings for some materials with documented clinical results.a, b, c.
  • a. Wang, A., et al., Tribology International, Vol. 31, No. 1-3:17-33, 1998.
  • b. Essner, A., et al., 44th Annual Meeting, ORS, New Orleans, Mar. 16-19, 1998:774.
  • c. Essner, A., et al., 47th Annual Meeting, ORS, San Francisco, Feb. 25-28, 2001:1007.
2. Stryker Test Report RD-05-013.
3. Taylor, S.K., Serekian, P.,Manley, M., “Wear Performance of a Contemporary Alumina: Alumina Bearing Couple Under Hip Joint Simulation,” Trans. 44th Ann. Mtg. ORS, 51, 1998.
4, 5.  Australian Orthopaedic Association National Joint Replacement Registry. Annual Report. Adelaide, AOA, 2013.
Stryker Corporation or its divisions or other corporate affiliated entities own, use or have applied for the following trademarks or service marks: Stryker, Trident, X3. BIOLOX delta is a registered trademark of Cerasiv GmbH Innovatives Keramick-Engineering and CeramTec AG Innovative Ceramic Engineering. All other trademarks are trademarks of their respective owners or holders.
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Learn more about the hip implants your surgeon may use

Learn more about the hip implants your surgeon may use

Ask your surgeon for more details

Your surgeon can provide you with information on the hip replacement they feel is best suited to your situation, should surgery be an option for you. 

If your surgeon uses Stryker products, ask them for a login to the Stryker Online Patient Resources, where you can learn more about the hip implant you may receive, what to expect during surgery, and what rehabilitation exercises you can do during your recovery. 

I am having a hip replacement using Stryker products. Which hip implant is best for me?

Your body is different from everyone else's, and so is your hip pain. Stryker’s personalised hip solutions provide extensive, technologically advanced and customisable options for getting you and your hip functioning again.

Stryker has some of Australia’s leading hip and knee replacement products. These include the most commonly used implants, recognised for their long-lasting performance.1

Your doctor will determine the optimal treatment for your unique anatomy and lifestyle, using Stryker’s portfolio of surgical products and advanced technologies. If you having a total hip replacement, these options include:

References
1 Australian Orthopaedic Association National Joint Replacement Registry. Annual Report. Adelaide: AOA; 2012.
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Next Steps

Contact your GP or health professional to discuss your options