Knee & hip implant diagnostics

A non-invasive solution to precisely diagnose orthopedic implant fixation

From a load-induced CT scan to quantified implant motion in under 30 minutes — a clear answer on loosening for surgeon and patient.

How it works Get in touch
AtMoves implant loosening report showing the tibial component and quantified displacement values

Automated implant loosening report

From load-induced CT scan to quantified implant motion in under 30 minutes

The problem

No accurate, non-invasive way exists today to Quantify the fixation of hip and knee implants

Line chart: projected annual total knee and hip replacements rise steeply from 2015 to 2040, knee reaching about 3.4 million and hip about 1.4 million
Projected annual knee (TKA) and hip (THA) replacements, 2015–2040
4M

knee and hip replacements worldwide — every year

15–18 yrs

typical implant lifespan: every patient eventually returns to the clinic

#1

loosening is the leading reason for revision surgery

10–15%

of revision surgeries today are unnecessary

Months

until a diagnosis — which is often still inconclusive

8M+

knee implants older than 5 years in the US alone

Current pathway

Today's diagnosis: months of costly, inconclusive imaging

Typical work-up for a suspected loose implant

  1. €75
    X-ray
  2. €150
    CT scan
  3. €800
    Bone scintigraphy
  4. €1,700
    PET-CT
  5. ongoing
    Pain management
~6 months

until a diagnosis

~€1,500

spent on imaging alone

70–80%

diagnostic accuracy — often still inconclusive

With AtMoves

  • Faster report in < 30 min
  • Precise > 90% accuracy
  • Lower cost one CT-based exam
  • Better experience clear, visual report

Our solution

AtMoves: a clear answer on implant fixation in under 30 minutes

  • Over 90% accuracy
    Non-invasive fixation assessment
  • Any implant
    Works for every knee or hip ever implanted
  • Fits the current workflow
    No new reimbursement code needed
  • Scalable platform
    Knee → hip → other joints
  • Protected & regulated
    Patented; MDR / FDA Class IIa pathway
  1. 1
    Load-induced CT scan
    Knee loaded in a dedicated device during a standard CT
    5 min
    Loading device on a knee, varusLoading device on a knee, valgusCT scanner
  2. 2
    Advanced image analysis
    AI segmentation and 3D registration of implant vs. bone
    15 min
    Image analysis pipeline: segmentation and registration of implant and bone
  3. 3
    Loosening report
    Quantified implant motion, ready for the surgeon
    < 30 min total
    Loosening report thumbnail

Value

Under 30 minutes to a report with precise measurement

Better for patients, providers and payers.

For surgeons
Relevant information to support diagnosis
For patients
Clarity in one visit
For administration and payers
Save on resources and time, and improve outcomes
AtMoves implant loosening report

Evidence

Built on years of peer-reviewed clinical research

  • Years of validated clinical studies and datasets
  • CT scan in 7 min; report in < 30 min
  • Geometric deep-learning segmentation
Patent portfolio
  • NL1041624B1
  • EP3389473A1
  • US20190000631A1
AtMoves publication 1 AtMoves publication 2 AtMoves publication 3 AtMoves publication 4 AtMoves publication 5 AtMoves publication 6 AtMoves publication 7 AtMoves publication 8 AtMoves publication 9 AtMoves publication 10

Team

Strong leadership and a multidisciplinary expert team

Leadership

Dennis Krap
Dennis Krap
Co-founder & CEO
Arthur J. Kievit
Arthur J. Kievit, MD PhD
Founder · Orthopedic surgeon, Amsterdam UMC

Clinical, technical & AI experts

  • G. Kerkhoffs, Prof. MD
    Orthopedic surgeon
  • M.U. Schafroth, MD PhD
    Orthopedic surgeon
  • C.I. Sánchez, Prof.
    AI in health (qurAI)
  • G.J. Streekstra, MEng PhD
    Image analysis
  • L. Blankevoort, MEng PhD
    Biomechanics
  • J.G.G. Dobbe, MEng PhD
    Biomedical informatics
  • G.S. Buijs, MD PhD
    Knee project
  • A.G.M. Hopman, MD
    Hip project
  • E. Simon, MSc
    AI algorithm

Key partners

Amsterdam UMC qurAI Innovatiefonds Noord-Holland Health~Holland NWO Funded by the European Union

Quantify implant movement reliably

  • Precise and reliable diagnosis
  • Non-invasive
  • Quick diagnosis
  • Quantifies actual implant movement
  • Cloud-based service
  • Cost saving
Dennis Alexander Krap, CEO
dennis@atmoves.nl
Arthur J. Kievit, MD PhD
a.j.kievit@amsterdamumc.nl