Evaluating the AtMoves Knee System for Diagnosing Loosening After Total Knee Replacement in Routine Care
Led by Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) · Updated on 2025-02-21
124
Participants Needed
7
Research Sites
13 weeks
Total Duration
AI-Summary
What this Trial Is About
Researchers are evaluating the AtMoves Knee System to improve the diagnosis of aseptic loosening in patients who have received a total knee replacement. The main goal is to find out if using this specialized device during a CT scan can reduce the number of failed outcomes, defined by patient-reported knee function scores not showing meaningful improvement at 12 months. The study compares two groups to see if the AtMoves Knee System helps in clinical diagnosis and treatment decisions.
Participants are randomly assigned to one of two groups. The intervention group undergoes a CT scan using the AtMoves Knee System, which applies specific forces to detect movement of the knee prosthesis component. Both groups continue with diagnostic and treatment plans determined by their orthopedic surgeons, with the control group not receiving the specialized CT scan. This allows researchers to assess the added value of the AtMoves system in routine clinical care.
During the one-year follow-up period, participants complete questionnaires about their knee function. Researchers will track the percentage of failed outcomes, revision surgeries, diagnostic activities, related costs, medical use after diagnosis, societal productivity loss, and participant satisfaction with the AtMoves procedure. The study aims to provide a comprehensive evaluation of this diagnostic tools impact on patient outcomes and healthcare use.
CONDITIONS
Brief Title
DIGITAL-KNEE Study: Adequately Diagnosing Total Knee Arthroplasty Loosening by Evaluating the AtMoves Knee System in a Routine Clinical Setting
Research Team
M
Milo J.K. Mokkenstorm, MD
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Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Lead Sponsor
Sint Maartenskliniek
Collaborating Sponsor
Who Can Participate
Age: 18Years +
All Genders
Eligibility Criteria
You may qualify if you...
Age 18 years or older
Have undergone unilateral or bilateral total knee arthroplasty surgery
Aseptic loosening is considered a possible diagnosis by the treating orthopedic surgeon
Orthopedic surgeon is uncertain of diagnosis after anamnesis, physical exam, and conventional x-ray
Surgeon requests additional exams or imaging to reach a diagnosis and treatment plan
Capable of giving informed consent and willing to undergo examination with the AtMoves Knee System
You will not qualify if you...
Clear other cause for knee complaints besides aseptic loosening (e.g., septic loosening, neuropathic pain, non-healed peri-prosthetic fracture)
Surgical intervention of the index knee within the year before symptom start
Posttraumatic or congenital leg deformity incompatible with the loading device
Pregnancy or suspected pregnancy
Unable or unwilling to understand or sign informed consent or undergo AtMoves Knee System examination
Your Study Journey
Screening
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Diagnostic Evaluation
Duration - Up to 6 months until the final diagnostic decision
Participants undergo diagnostic assessments to determine the presence of total knee arthroplasty loosening. Those in the intervention group have a CT-scan using the AtMoves Knee System in addition to usual diagnostic care, while the control group undergoes usual diagnostic care without the CT-scan.
Visits depend on diagnostic activities determined by the treating orthopedic surgeon
Long-term Monitoring
Duration - 12 months
Participants are observed for outcomes such as revision surgery, medical consumption, and productivity loss after diagnosis over a 12-month period.
Follow-up visits as scheduled for monitoring outcomes
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
DIAGNOSTIC
Number of Arms
2
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Published Research Related To This Trial
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