Navigation Links
High-Impact Sports Might Not Harm Knee Replacements
Date:3/12/2010

More active patients had better joint function, study found

FRIDAY, March 12 (HealthDay News) -- Patients who get a total knee replacement are usually advised to avoid high-impact sports to preserve their new body part. But a new study suggests sport participation is not only safe -- it may even help people gain better knee function.

''Initially, we though high-impact sports were terrible for the prosthesis," said Dr. Sebastien Parratte, a research collaborator at the Mayo Clinic in Rochester, Minn., and an assistant professor at the Aix-Marseille University Center for Arthritis Surgery at Hospital Sainte-Marguerite in Marseille, France.

"Our eight-year results have shown it is not the case," he said.

He is the lead author of the study, scheduled for presentation Friday at the annual meeting of the American Academy of Orthopaedic Surgeons in New Orleans.

More than a half million total knee replacements are performed annually in the United States, according to the American Academy of Orthopaedic Surgeons. Parratte and his colleagues conducted the study knowing that patients routinely ignore their doctor's advice to take it easy after receiving a knee replacement. In fact, about one of six patients engage in high-impact activities post-implantation, experts say.

Parratte's team followed 535 patients in all. A total of 218 underwent knee replacement and then performed heavy manual labor or engaged in a non-recommended sport, such as high-impact aerobics, football, soccer, baseball, jogging or power lifting. The control group of 317 patients had knee replacement but did not engage in sports that were not recommended.

The researchers evaluated the patients clinically and with X-rays. About eight years after surgery, they found no significant radiological differences and no significant differences in the implant durability between groups.

In fact, the sport group had slightly higher knee function scores than the control group.

A first comparison found that the control group had a 20 percent higher need to repeat the operation because of mechanical failure of the knee (from wear, fracture or loosening) compared to the sport group. But when they took into account other health problems such as obesity or diabetes, the sport group had a 10 percent higher risk of mechanical failure compared to the control group, but the difference wasn't statistically significant.

''The control group was more likely to have high blood pressure, obesity and diabetes," Parratte added.

He said he doesn't know why the sport group's knees held up better.

Still, the study findings are no reason to tell patients with knee replacements to exercise in a high-impact way, said Dr. Christian Christensen, an orthopedic surgeon and head of adult reconstruction at the Lexington Clinic in Lexington, Ky.

"I think it's a good study and certainly a worthwhile one," he said. "Would it encourage me to tell my patients to play football? No way."

More research is needed to evaluate what's happening, he said. It's possible that the people with the best results may be the ones engaging in high-impact sports. "People with the knees that feel great, who have excellent results,'' are perhaps the ones who can engage in the high-impact sports without ill effect, he said.

Another possibility, he said, is that the follow-up may just not be long enough, that ill effects may show up later. Christensen said he'll continue to tell his knee-replacement patients to avoid high-impact sports. "Implants aren't meant to tolerate high-impact sports," he said.

Dr. Benjamin Bengs, another expert, called the new study findings promising. It shows these devices are long-lasting, can lead to lifelong pain relief and excellent functioning and activity in patients, said Bengs, an orthopedic surgeon at Santa Monica-University of California Medical Center and Orthopaedic Hospital.

But more time and study are needed before we completely release people to all high-impact activities, he said.

''One study is not enough to change the recommendations," Parratte agreed. He plans to study the topic further.

More information

To learn more about total knee replacement, visit the American Academy of Orthopaedic Surgeons.



SOURCES: Sebastien Parratte, M.D., Ph.D., orthopedic surgeon, Mayo Clinic, Rochester, Minn., and Aix-Marseille University, Center for Arthritis Surgery, Hospital Sainte-Marguerite, Marseille, France; American Academy of Orthopaedic Surgeons annual meeting, March 12, 2010, New Orleans; Christian Christensen, M.D., head of adult reconstruction at the Lexington Clinic, Lexington, Ky.; Benjamin Bengs, M.D., orthopedic surgeon, Santa Monica--University of California Medical Center and Orthopaedic Hospital, Santa Monica, Calif., and assistant professor, orthopedic surgery, UCLA David Geffen School of Medicine, Los Angeles


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

Related medicine news :

1. High-Impact Activity May Be Good for Old Bones
2. Creating an Effective Market Research Group to Generate High-Impact Business Results
3. Creating an Effective Market Research Group to Generate High-Impact Business Results
4. Creating an Effective Market Research Group to Generate High-Impact Business Results
5. Jump in Kids Sports Injuries Due to Overuse
6. Pediatric sports injuries: the silent epidemic
7. ATV and motocross sports - high velocity toys merit caution
8. MatchMySport.com Aims to Reduce Obesity Levels Through Sports Participation by Finding Sports Partners/Players/Teams
9. Shoulder Dislocations a Sports Hazard
10. SportsDirect Inc. and Enetpulse Form Global Sports Information Alliance
11. New Insurance Membership Program Protects Washington State Families Against High Cost of Emergency Medical Transports
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2016)... , ... June 24, 2016 , ... People across the ... Genome magazine’s Code Talker Award, an essay contest in which patients and their families ... to be presented at the 2016 National Society of Genetic Counselors (NSGC) Annual Education ...
(Date:6/24/2016)... ... June 24, 2016 , ... Puradigm® & ... (TGIG), has initiated cultivation and processing operations at its production facility, and opened ... , Puradigm is the manufacturer of a complete system of proactive air and ...
(Date:6/24/2016)... ... June 24, 2016 , ... Venture Construction Group (VCG) sponsors ... on June 20th at the Woodmont Country Club at 1201 Rockville Pike, Rockville, Maryland, ... to helping service members that have been wounded in battle and their families. Venture ...
(Date:6/24/2016)... ... June 24, 2016 , ... Finally, a bruise cream that ... dermaka cream can be incorporated into the post-surgical treatment plans of a variety of ... , dermaka cream is very effective for bruising and causes a rapid resolution of ...
(Date:6/24/2016)... New York (PRWEB) , ... June 24, 2016 , ... ... marijuana patients optimize the ingestion of their medication by matching users with high quality ... users to compare pieces with no commitment. , Inhale was founded by two brothers, ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on the ... announced that patient enrollment in its ongoing randomized ... has exceeded 50% of its 24-patient target. Capricor ... the third quarter of 2016, and to report ...
(Date:6/23/2016)... BOGOTA, Colombia , June 23, 2016  Astellas today announced the establishment of Astellas Farma Colombia (AFC), a ... second affiliate in Latin America . ... ... ... ...
(Date:6/23/2016)... , June 23, 2016  Experian ... integrating and transforming the patient payment and ... several innovative new products and services that ... its revenue cycle offerings. These award-winning solutions ... efficient workflows, remain compliant in an ever-changing ...
Breaking Medicine Technology: