Osseointegrated Implants Pose Minimal Risk for Serious Infections

by Reshma Anand on  June 2, 2016 at 12:35 PM Research News   - G J E 4
There is a minimal risk for severe infection with osseointegrated implants, a newer prosthetic system, press-fitted directly into the femur bone, that enables bone growth over a metal, robotic prosthetic limb in patients with above knee amputations, according to a study published in the Journal of Bone and Joint Surgery.
Osseointegrated Implants Pose Minimal Risk for Serious Infections
Osseointegrated Implants Pose Minimal Risk for Serious Infections

For more than 600 years, patients with amputations above the knee received a prosthesis that fit over the skin and soft tissue of the amputation stump. However, approximately one-third of these patients experience problems, including discomfort and skin irritation, resulting in limited mobility and reduced quality of life. Over the past 20 years, osseointegrated implants--or implants that grow directly into the bone--have emerged, and while most patients do well with these implants, concerns persist about the risk for serious infection.

‘Osseointegrated implants, a newer prosthetic system, pose minimal infection risk among patients with amputations above the knee.’
Using a new infection classification system, researchers tracked adverse events in 86 patients (91 implants) who received a "press-fit" osseointegrated implant between 2009 and 2013. For each patient, the procedure was performed in two stages: first, a porous-coated implant was placed in the femur bone, and second, a stoma, or opening, was created to attach the prosthesis. The patients, ages 25 to 81, were followed for a median of 31 months.

Among the results:
  • Thirty-one patients had no side effects or complications related to the osseointegration system.
  • Twenty-nine patients developed a grade one or two infection, successfully managed with "simple measures."
  • Twenty-six patients had no infection, but reported other complications such as problems with the orthopaedic hardware, problems with skin and soft tissue, or fracture of the femur bone.
  • No patients had a grade three or four infection.
"For amputees struggling with socket fit, the osseointegrated press-fit implant provides greater comfort, mobility, and the opportunity to function closer to an able bodied person," said study author Munjed Al Muderis, an orthopaedic surgeon at Macquarie University Hospital in Sydney, Australia.

"We can confidently say that this type of prosthesis is a viable choice and the new infection classification system, developed by the Osseointegrated Group of Australia, provides an effective tool for the use in patient selection as well as infection management."

Source: Eurekalert

Post your Comments

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.
User Avatar
* Your comment can be maximum of 2500 characters
Notify me when reply is posted I agree to the terms and conditions

You May Also Like

View All