Dr. Peterson is the first surgeon in the region to use the latest technological advancement in total hip replacement; The Dual Mobility MDM hip replacement from Stryker. This incorporates the use of two balls instead of one. An inner ball made of ceramic or metal, and an outer X3 highly crosslinked polethylene ball. This unique bearing has the advantage of greatly increased stability compared with conventional hip replacement. A recent study that reviewed the current literature showed the dislocation rate to be only 0.1% with dual mobility hips versus 2-7% for traditional hip replacement. (MA Mont ’12) The wear rate is also significantly reduced making this a very attractive implant for younger active patients. Note in the video below how both femoral heads move independently of each other and allow greater range of motion than could be accomplished with just one.
WATERLOO, ONTARIO–(Marketwired – July 13, 2015) – Intellijoint Surgical Inc., a privately held Canadian medical technology company committed to developing low-cost, miniaturized surgical smart tools, announced today the commercial launch of its flagship product, intellijoint HIP™, for use by orthopaedic surgeons across Canada.
intellijoint HIP is simple, easy to use and provides surgeons with vital intra-operative measurements enabling proper cup position, equalization of leg length and restoration of hip offset. These critical measurements can assist in the prevention of recurrent instability, hip dislocation and leg length discrepancy. intellijoint HIP benefits from the company’s proprietary core technology, a miniaturized surgical grade tracking system placed in the sterile field.
“intellijoint HIP is a revolutionary smart tool that will make a significant impact on patient outcomes in hip replacement surgery and health care system costs worldwide,” said Armen Bakirtzian, Co-Founder and CEO of Intellijoint Surgical. …
November 9, 2015 – Femoral heads treated with highly cross-linked polyethylene showed low wear during long-term follow-up, according to Harry E. Rubash, MD at the American Association of Hip and Knee Surgeons Annual Meeting.
There are many types of THR hip devices. These are only a sample of the many available.
Large Ball Total Hip Devices
There are many types of Total Hip Replacement devices and many informative articles explaining the advantages and disadvantages of each.
- Zimmer Offers Vivacit-E Vitamin E highly crosslinked polyethylene (HXPE) liners For Lifetime of Wear
- Zimmer Holdings, Inc. to Combine with Biomet, Inc. 2014
- Ceramic-on-Ceramic for Your Next THA by Dr. Benazzo 2012
- Types of Total Hip Replacement Devices by Patricia Walter
- Metal on Metal Hip Device by Dr. Waldman
- Metal on Metal Video by Dr. Bolognesi
- Ceramic on Ceramic Hip Devices
- Choosing a Hip Device by Dr. Huddleston
- Proxima Hip Device
- Stryker MITCH TRH Primary Acetabular Hip Systems
- Metal with Polyethylene Liner Device
- Alternative Bearing Surfaces for THR Devices
- Oxinium Total Hip Replacement Devices
By Stephen B. Murphy, MD ORTHOPEDICS TODAY April 2008
Nine surgeons with 11 years and 1,100 ceramic-hip experience have never heard a squeak…
…What is more interesting is the severity and frequency of the squeaking. We have seven surgeons who have used the Accolade/Trident implant combination, and all seven have heard squeaking in their office. We have nine surgeons with more than 10.5 years experience with 1,100 hips with flush-mounted liners and none of those surgeons had ever heard a squeak in their office with the exception of one bearing and liner that had mismatched diameters.
I have a Stryker ceramic and titanium hip replacement and have had it since 10/2/03 I first noticed the squeak while making love, it worsened: and going up stairs is actually quite noisy. With one foot on a chair, raising my weight with the replaced hip, it sounds like a rusty gate hinge and emits a about a 2 octave range.
Here is the response I got from Stryker when I Emailed them about my sonorus astabularium:
A few patients with ceramic-on-ceramic hips report that in certain situations, they hear a noise, or squeaking, emanating from the hip. Surgeons have also reported on patients who reported noise during very specific activities, such as rising from a chair or walking up stairs, and that often the noise will disappear spontaneously. The number of reports is low in relation to the number of components implanted.
The reported noise has never …
The Stryker Trident® Ceramic Acetabular System is a ceramic-on-ceramic implant system used to replace the “ball and socket” joint of a hip when a total hip replacement is performed for patients suffering from arthritis or related conditions. Unlike conventional hip implants, the Trident® system utilizes alumina ceramic-on-ceramic surfaces rather than metal-on-plastic or metal-on-metal. Ceramic-on-ceramic components have demonstrated significantly lower wear versus the conventional metal-on-plastic or metal-on-metal systems in the laboratory; therefore, it is anticipated that these improved wear characteristics will extend the life of the implant.
Acetabular shell design is also important for long-term performance for the hip implants. The Trident® Ceramic System is a cementless system, which means that the implants are fixed to the bone through implant design and technique, rather than using bone cement. Additional technology such as Arc Deposition and Hydroxyapatite (HA) coating are an essential part of the shell design.
Stryker Orthopaedics Trident Ceramic Hip System
Trident® Ceramic Hip System
The Trident® Ceramic Acetabular System is an artificial hip replacement device that features a new, state-of-the-art ceramic-on-ceramic bearing couple. The artificial hip replacement device consists of four basic components: an alumina ceramic insert (socket liner), an alumina ceramic femoral head (ball), a metal acetabular shell (socket), and a metal femoral stem (hip stem).
The hip stem is inserted into the top of the thighbone. The ball fits onto the top of the hip stem. The socket liner and mating socket are fixed to the hip joint. The ball and socket articulate together.
The Trident® implant has bearing surfaces (the ball and socket) made of alumina ceramic. Laboratory testing of alumina ceramic has shown it to have less wear than the metal and plastic materials that are currently used in total hip surgery. Alumina ceramic is …