Navigation Links
New Hip Implants No Better Than Older Ones, Study Finds
Date:11/30/2011

By Steven Reinberg
HealthDay Reporter

TUESDAY, Nov. 29 (HealthDay News) -- No matter the material, all types of hip replacement devices appear to work the same, a new analysis finds.

Specifically, the newer, metal-on-metal implants seem to be no more effective than older implants and may sometimes even be more problematic, the researchers said.

"Metal-on-metal and ceramic-on-ceramic hip implants might not be associated with any advantage, compared with traditional bearings such as metal-on-polyethylene or ceramic-on-polyethylene," said lead researcher Dr. Art Sedrakyan, director of the Patient-Centered Comparative Effectiveness Program at Weill Cornell Medical College in New York City.

There is some evidence from three large national registries that higher rates of replacement surgery are associated with metal-on-metal implants, compared with metal-on-polyethylene implants, Sedrakyan noted.

However, the bottom line for Sedrakyan is that there is not enough information about these devices to really tell if one type is better or safer than another.

"There are very successful implants on the market today for hip replacement," Sedrakyan said. "We need to have stronger data on improvement in clinical outcomes for new hip implants," he said.

Even for newer implants such as metal-on-metal or ceramic-on-ceramic bearings, their advantage over traditional implants is not clear, Sedrakyan added.

The report was published in the Nov. 29 online edition of the BMJ.

In the United States alone, almost 400,000 people each year have hip replacement surgery, Sedrakyan noted. A small percentage have surgery to fix problems with previous hip replacements. Often these operations occur within 10 years after initial surgery and are needed because of infection, dislocation, wear, instability, loosening or other mechanical failures.

Although the cost of a hip replacement varies by location and insurance, the average cost in the United States ranges between $35,000 and $40,000, with the newer devices costing on the high end of the spectrum, according to a 2006 report from the nonprofit Integrated Healthcare Association.

Older hip implants made with metal-on-polyethylene or ceramic-on-polyethylene surfaces are associated with low failure rates. However, newer metal-on-metal hip implants have been linked with severe cases of accumulation of metal ions in patients' tissues.

In 2009, the U.S. Food and Drug Administration began a review of the evidence for the safety and effectiveness of approved hip implants.

Working with the FDA, Sedrakyan's team looked at the safety and effectiveness of various types of hip implants in 18 studies including more than 3,000 patients and 800,000 operations.

The investigators found no difference between the various types of implants in terms of the patients' quality of life or ability to function normally.

Commenting on the study, Dr. Peter Cram, an associate professor of medicine in the division of internal medicine at the University of Iowa Carver College of Medicine, said that "the study highlights a critical issue in joint replacement surgery, which is there is not a lot of good data."

Cram noted that it is "shocking" that there are so many hip replacements done with so little data about which implants are best.

For patients, the best way of ensuring they are getting the best hip replacement they can get has really nothing to do with the device, Cram added. "You probably want an experienced surgeon, who does lots of these procedures, in a hospital that does lots of these procedures," he said.

Dr. Joseph Zuckerman, professor of orthopedic surgery and chair of the orthopaedic surgery department at NYU Langone Medical Center in New York City, said that "this study confirms what many surgeons already practice -- that in the pursuit of providing the best outcome, a surgeon must base his or her treatment recommendation on important factors that include each individual patient's health status and lifestyle, their own clinical experience, the documented evidence about outcomes and the available technology."

More information

For more on hip replacement, visit the U.S. National Library of Medicine.

SOURCES: Art Sedrakyan, M.D., Ph.D., associate professor and director, Patient-Centered Comparative Effectiveness Program, Weill Cornell Medical College, New York City; Joseph D. Zuckerman, M.D., the Walter A.L. Thompson professor of orthopedic surgery and chair, department of orthopaedic surgery, NYU Langone Medical Center, New York City; Peter Cram, M.D., M.B.A., associate professor, medicine, department of internal medicine, University of Iowa Carver College of Medicine, Iowa City; Nov. 29, 2011, BMJ, online


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Word learning in deaf children with cochlear implants
2. Deaf children with cochlear implants report similar quality of life to that of normal-hearing kids
3. New York Personal Injury Attorney David Perecman Comments On Dangers Of ‘Metal On Metal' Hip Implants
4. UC center chosen to study auditory brain stem implants
5. Rubicon Medical To Offer Allergan Implants In Breast Enlargement Surgery
6. Study Questions Use of Heart Device Implants in the Very Old
7. Khanna Institute to Provide Intacs Corneal Implants in Beverly Hills
8. Boca Raton Plastic Surgeon's New Facial Implants Counteract Facial Aging
9. Searching for Breast Augmentation Surgeons? Breast Implants USA Revamp Aims to Set Standard for Online Experience for Breast Enlargement Patients
10. New E-Book Explains the Facts About Dental Implants
11. Risks Rise for Other Surgeries After Stent Implants
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New Hip Implants No Better Than Older Ones, Study Finds
(Date:3/24/2017)... ... March 24, 2017 , ... According to a new study ... because it does not obey the rules Congress has directed the CBO to follow. ... the GOP reform would restore. Yet, it estimates a reduction in employer-based coverage due ...
(Date:3/24/2017)... (PRWEB) , ... March 24, 2017 , ... The iaedp ... and other medical professionals caring for those suffering from the full spectrum of disordered ... 800, as eating disorders professionals from nearly all 50 states and several countries converged ...
(Date:3/24/2017)... ... March 24, 2017 , ... Shamanic healer and teacher ... Healing and Spiritual Awakening, proudly presents her Sacred Peru retreat with world ... and spiritual journey during the Summer Solstice will also be her final international ...
(Date:3/24/2017)... ... March 24, 2017 , ... As the standards bearer ... communications platform that positions them as the go-to thought leader in all matters ... publication as an always-on, always-fresh news, views and advocacy engine, called ONS Voice. ...
(Date:3/24/2017)... ... March 24, 2017 , ... On ... Advanced ERISA Benefit Claims Litigation seminar in Chicago, Illinois. She will present ... majority of cases litigated under ERISA involve claims for long-term disability benefits. ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... Research and Markets has announced the addition of ... their offering. ... analyzes the worldwide markets for Dental Implants in US$ Million. The report ... Japan , Europe , ... World. Annual estimates and forecasts are provided for the ...
(Date:3/24/2017)... Research and Markets has announced the addition of the "Global ... ... very strong with a total of 97 drug candidates. Pharma giant such ... involved in the development of the IPF therapeutics. The IPF pipeline comprised ... 15 are in Phase II stage, 12 are in Phase I stage, ...
(Date:3/24/2017)... 2017 Research and Markets has announced the ... Report" report to their offering. ... The report provides separate comprehensive analytics for the US, ... , Asia-Pacific , Latin America ... the period 2015 through 2022. Also, a six-year historic analysis is provided ...
Breaking Medicine Technology: