Navigation Links
Study identifies potential fix for damaged knees
Date:7/9/2009

Investigators from Hospital for Special Surgery have shown that a biodegradable scaffold or plug can be used to treat patients with damaged knee cartilage. The study is unique in that it used serial magnetic resonance imaging (MRI) and newer quantitative T2 mapping to examine how the plug incorporated itself into the knee. The research, abstract 8372, will be presented during the annual meeting of the American Orthopedic Society for Sports Medicine, June 9-12, in Keystone, Colo.

"The data has been encouraging to support further evaluation of this synthetic scaffold as a cartilage repair technique," said Asheesh Bedi, M.D., a fellow in sports medicine and shoulder surgery at Hospital for Special Surgery who was involved with the study. Dr. Bedi performed analysis of MRI scans of patients primarily treated by Riley Williams, M.D., director of the Institute for Cartilage Repair at Hospital for Special Surgery. "The Trufit plug has been designed to have mechanical properties that are similar to cartilage and bone," Dr. Bedi said.

Damage to so-called articular cartilage can occur in various ways, ranging from direct trauma in a motor vehicle accident to a noncontact, pivoting event on the soccer field. "Articular cartilage lacks the intrinsic properties of healingyou are essentially born with the articular cartilage that you have," Dr. Bedi said. Left untreated, these injuries can increase loads placed on the remaining intact cartilage and increase the risk of progression to degenerative arthritis. One way to treat patients with symptomatic chondral lesions is an OATS procedure, in which cartilage is transferred from one portion of the knee to treat another. Because this is a "robbing Peter to pay Paul" situation, researchers at Hospital for Special Surgery set out to examine whether they could use a biodegradable plug, the Trufit CB plug, to fill the donor site. The goal was to monitor how the plug incorporated itself into the knee and to evaluate the quality of the repair cartilage.

The Trufit plug has two layers. The top layer has properties similar to cartilage and the lower layer has properties similar to bone. The bilayered structure has mechanical properties that approximately match the adjacent cartilage and bone. Surgeons inserted the plug in the knees of 26 patients with donor lesions from OATS procedures and followed up with imaging studies (with MRI and T2-mapping) at various intervals for a period of 39 months.

"Quantitative MRI, when combined with morphologic assessment, allows us to understand the natural history of these repair techniques and define those patients who are most likely to benefit from the surgery," said Hollis Potter, M.D., chief of the Division of Magnetic Resonance Imaging, director of Research in the Department of Radiology and Imaging at Hospital for Special Surgery and lead author of the study. "We gain knowledge about the biology of integration with the host tissue, as well as the repair tissue biochemistry, all by a noninvasive imaging technique."

"What we found was that the plug demonstrated a predictable process of maturation on imaging studies that paralleled the biology of their incorporation," Dr. Bedi said. "With increasing postoperative duration, the repair tissue demonstrated encouraging properties with T2-values that resembled native articular cartilage."

Dr. Williams, Dr. Bedi and other surgeons at Hospital for Special Surgery are involved in ongoing studies to investigate the efficacy of the TruFit plug in treating primary cartilage defects as well. "What is unique about this study is that we have serial MRI with T2 mapping at various time points after surgery, which allows us to really examine the natural history of plug incorporation," Dr. Bedi said.

Dr. Williams believes that there is a role for scaffold-based cartilage repair strategies in the treatment of symptomatic cartilage lesions. "It is our hope that we can successfully treat these cartilage problems over the long term, thus restoring normal knee function and slowing the progression of knee arthritis," Dr. Williams said.


'/>"/>

Contact: Phyllis Fisher
fisherp@hss.edu
212-606-1197
Hospital for Special Surgery
Source:Eurekalert

Related medicine news :

1. Penn study finds pro-death proteins required to regulate healthy immune function
2. New study shows promise in reducing surgical risks associated with surgical bleeding
3. Study, meta-analysis examine factors associated with death from heatstroke
4. Study suggests loss of 2 types of neurons -- not just 1 -- triggers Parkinsons symptoms
5. Study says COPD testing is not measuring up
6. Preclinical study suggests organ-transplant drug may aid in lupus fight
7. Ability to cope with stress can increase good cholesterol in older white men, study finds
8. High alcohol consumption increases stroke risk, Tulane study says
9. Mailman School of Public Health study examines link between racial discrimination and substance use
10. Pitt study finds inequality in tobacco advertising
11. Stanford study highlights cost-effective method of lowering heart disease risks
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/2/2016)... , ... December 02, 2016 , ... ... on the perils of heroin that was watched live by 1 million viewers ... I. duPont-Columbia University Award. , ASU students at the Walter Cronkite School of ...
(Date:12/2/2016)... AL (PRWEB) , ... December 02, 2016 , ... ... from across the Dothan-Wiregrass Area in Alabama are expected to attend the UNCF ... Schmitz, will help provide scholarship funds for area students and operating support to ...
(Date:12/2/2016)... Portland, Maine (PRWEB) , ... December 02, 2016 , ... ... support group for caregivers of those affected by autism spectrum disorder (ASD) and other ... and Easter Seals Maine, will give parents and other caregivers the opportunity to share ...
(Date:12/2/2016)... PA (PRWEB) , ... December 02, 2016 , ... With ... struggling through rehabilitation of an injury, patients must find the one that works for ... his pain, he created a machine that worked and decided to share it with ...
(Date:12/2/2016)... (PRWEB) , ... December 02, 2016 , ... More than ... and while 84 percent of parents report speaking with their child about sex related ... sexually transmitted diseases. , Mediaplanet is proud to announce the launch of its second ...
Breaking Medicine News(10 mins):
(Date:12/2/2016)... December 2, 2016 According ... Diagnostics/IVD Market by Product (Instruments, Reagents, Software), Technology ... Oncology, Cardiology, Nephrology, Infectious Diseases) - Forecast to ... valued at USD 60.22 Billion in 2016. This ... of 5.5% during the forecast period (2016-2021) to ...
(Date:12/2/2016)... FRANCISCO , Dec. 2, 2016  PipelineRx, a ... telepharmacy, will be offering demonstrations of its SaaS-based ... Society of Health-System Pharmacists 2016 Midyear Clinical Meeting ... Vegas . With nearly 300 hospital clients ... services and technology designed to dramatically improve pharmacy ...
(Date:12/2/2016)... 2, 2016 On Thursday, December ... excellence in research, development and innovation in the biopharmaceutical ... was held in the presence of Sergey Tsyb, Vice ... Russian Federation , Natalia Sanina, First Vice Chairman ... , Head of Roszdravnadzor, National Service of Control in ...
Breaking Medicine Technology: