Intended Use

RBknee is a fully automated software device intended to aid medical professionals in measuring minimum joint space width and assessing the presence or absence of sclerosis, joint space narrowing, osteophytes based on OARSI criteria, and radiographic knee osteoarthritis based on Kellgren-Lawrence grading from standing fixed-flexion radiographs of the knee.

Technology

RBknee utilizes computer vision and machine learning algorithms trained on medical X-ray images to detect and measure osteoarthritis-related features. It outputs visual overlays on radiographs and textual reports including measurements and standardized grading scores. It runs as standalone software compatible with Linux and Docker, and can integrate with PACS and DICOM viewers.

Performance

Software verification and validation testing confirmed intended function. Clinical performance was validated on a large osteoarthritis image dataset (Osteoarthritis Initiative) showing high sensitivity and specificity for detection of Kellgren-Lawrence grade, joint space narrowing, osteophytes, and sclerosis, as well as high accuracy in measuring minimum joint space width compared to expert readings.

Predicate Devices

No predicate devices specified

Device Timeline

  • 1

    Submission

    12/18/2020

    8 months
  • 2

    FDA Approval

    8/27/2021

Ready to Sharpen Your Edge?

Join hundreds of your peers who rely on RadAI Slice. Get the essential weekly briefing that empowers you to navigate the future of radiology.

We respect your privacy. Unsubscribe at any time.