Hip replacement fit and fixation

Your doctor will consider several factors when determining the appropriate hip implants for you, including which implant design will best fit your hip anatomy and how to fix your hip implant to the bone. 

Some implants require bone cement to secure, or fix, the implant in place. Bone cement has been used since the earliest procedures were done and is still used today. Usually bone cement is used in patients with poor bone quality to help stabilise the hip components.

Other implants are manufactured with special coatings and rough surfaces that help your natural bone grow onto it, to achieve fixation. To make this work, you need good quality bone and an implant with a porous surface or tiny beads. Sometimes a combination of cement and cementless hip components are used. 

Femoral stem options 

Stryker offers a wide variety of femoral stems options, so your doctor can select the one that fits you best. The femoral stem your doctor chooses will depend on your bony anatomy, your bone quality, age, and other clinical factors as well as surgeon preference.

Exeter ® Femoral Stem

The Exeter stem is a highly polished, stainless steel, cemented stem for use in total hip replacement. Offered by Stryker, the Exeter femoral stem is the most commonly implanted hip stem in Australia (Table HT3).1 More than 1 million Exeter stems have been manufactured, with over 45,000 have been implanted in Australia.

First implanted in 1970 in Exeter (UK), the stem has over 40 years of outstanding clinical performance globally including one of the lowest revision rates of any cemented stem. ( A revision is where a subsequent surgery is required to address any issues with the implanted prosthesis.  )

References:
1 Australian Orthopaedic Association National Joint Replacement Registry. Annual Report. Adelaide: AOA; 2013

SecurFit®

The SecurFit stem is a titanium alloy, cementless stem for use in total hip replacement. This stem design originated in 1986 and was the first cementless hip stem in orthopaedics to use a revolutionary coating, hydroxyapatite (known as HA).

Hydroxyapatite is a naturally occurring substance in human bone that encourages the patient’s natural bone to grow onto the surface of the implant. This is an alternative to using bone cement.

The SecurFit stem comes in two configurations; SecurFit and SecurFit Plus. Together, these two stems have been implanted over 10,000 times and over 96.4% are still performing well after 10 years.

 

 

What is HA?

Hydroxylapatite (HA) is a naturally occurring substance that closely resembles natural bone mineral. Bone mineral stores the body's supply of calcium and phosphorus – two minerals critical to your health and the two major components of HA are calcium and phosphorus.

HA is applied to some hip implants, particularly acetabular cups and femoral stems, to encourage bone to grow onto it.1 Clinical studies with HA show that patients had early pain relief and rapid restoration of function.1 HA coated femoral stems perform very well in young and active patients.1

Tritanium® Advanced Fixation Technology

Tritanium® technology lets the bone grow into the component,2 providing better fixation.3 It is a three-dimensional surface on the acetabular cup, and is made from the highest quality commercially pure Titanium. The new Tritanium® technology was designed to resemble trabecular bone, a type of spongy bone tissue that provides skeletal support.

Studies have shown that it improves bone ingrowth when compared to other alloys.4 This technology may be especially beneficial for patients with low bone density or osteoporosis.5

Did you know?

Hip replacement facts

  • Most joint replacement osteoarthritis patients feel that their joint replacement feels either normal (47%) or natural (33%).
  • Overall, they see an improvement in quality of life, participation in activities, and emotions toward the condition since joint replacement surgery.6

 

References
1. D’Antonio, et. al. Hydroxyapatitie Femoral Stems for Total Hip Arthroplasty: 10-13 Year Follow-up, CORR, Volume 393, Dec. 2001, pp. 101-111.
2. Stryker Test Report RD-08-009. Evaluation of bone response to porous surfaces using a canine total hip model.
3. Stryker Test Report RD-07-077.
4. Ricci J.L., Kauffman J., Jaffe, W., et al, “Comparison of Osseointegration and Bone Adhesion to Commercially Pure Titanium Alloy,” 23rd Ann.Mtg. Society for Biomaterials, 1997.
5. National Osteoporosis Foundation.
6. Harris Interactive® Patient Study commissioned & conducted by Stryker, September 2003.

 

Stryker Corporation or its divisions or other corporate affiliated entities own, use or have applied for the following trademarks or service marks: Accolade, Stryker, Tritanium, Exeter, X3. 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