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
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 … Read the Rest
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 … Read the Rest
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. … Read the Rest
The ‘Silent™ Hip’ is designed for the young and active patient with arthritis of the hip. It is a relatively new procedure that has many potential advantages over standard hip replacements and resurfacing hip replacements.
The key feature of the ‘Silent™’ hip is the stem. The stem is the part of the hip that sits in the femur or thigh bone. Traditionally a stem sits in the shaft of the femur but in the ‘Silent™’ hip it is shorter and fixes only in the neck of the thigh bone. This saves a considerable amount of bone for the … Read the Rest
A CoCr modular neck provides for a strong neck construct. Fatigue testing has shown that the SMF Cobalt Chrome modular neck design exceeds the fatigue strength of the same neck design made out of titanium alloy by as much as 83% and a conventional titanium monolithic hip stem by as much as 18%.1
Utilizing radiosterometric analysis (RSA), the SMF system demonstrated stability consistent with the clincially successful SYNERGY* primary hip stem. Moreover, HHS and WOMAC scores indicated excellent relative clinical outcomes for the SMF group.2
With one of the highest coefficients of friction in the industry3, a porosity … Read the Rest
Todd V. Swanson, MD • Raghavendran Seethala, MS • David J. Peterson, PharmD, DO • Ryan Bliss, BBA • Calvin Spellmon, BS • Las Vegas, Nevada
Squeaking ceramic-on-ceramic total hip articulations are a cause for concern. Although used in Europe for almost 40 years, ceramic-on-ceramic hips did not exhibit a significant problem with squeaking until FDA approval of two ceramic hips in 2003.
…Based on the findings of this study, the authors recommend against the use of the Stryker Trident cup with the Accolade stem and the use of short necks in ceramic-on-ceramic total hip arthroplasty. Ceramic-on-ceramic articulations should be … Read the Rest
ORTHOPEDICS September 2011;34(9):464. by Adolph V. Lombardi, MD; Keith R. Berend, MD; Vincent Y. Ng, MD
Standard-length porous-coated tapered femoral stems perform exceedingly well in primary total hip arthroplasty (THA) at long-term follow-up. Nevertheless, there are multiple reasons to strongly consider the relatively new concept of short tapered stems…
…in comparison to hip resurfacing and other unconventional short-stem designs, tapered stems are familiar to most orthopedic surgeons and do not incur a steep learning curve.
Drs Lombardi and Berend are from Joint Implant Surgeons, Inc, the Department of Orthopedics, The Ohio State University, and Mount Carmel Health System, Dr Ng … Read the Rest
Surgeon explores use of short femoral stems for young osteoarthritic patients by Dr. Stulberg of Cleveland Clinic
Original Link http://www.orthosupersite.com/view.asp?rID=25418
‘A minimum 2-year follow-up of a prototype series showed no failures and one dislocation.’
Dr. Stulberg of the Cleveland Clinic explains using short cementless femoral stems in young, active patients may lead to bone remodeling while avoiding proximal-distal mismatch…
…’In a prototype series of 72 consecutive primary total hip arthroplasties (THAs), Stulberg fitted young, active patients with custom implants featuring stems less than 100-mm long.’
…A minimum 2-year follow-up revealed no failures and only one dislocation due to a … Read the Rest