- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04844879
Medacta NextAR TKA Pivotal Trial
Prospective, Multicentre, Single-arm, Open, Confirmatory Trial to Assess Efficacy and Safety of a Navigation System Providing Personalized Soft Tissue Balance Data in Medially-stabilized Total Knee Arthroplasty
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is a prospective, multicentre, single-arm, open, confirmatory clinical investigation to assess the efficacy and safety of a navigation system providing personalized soft tissue balance data in medially-stabilized total knee arthroplasty (TKA).
Participants will be informed about the study, both orally and in writing, during a preoperative visit. The investigator will answer any questions that may arise and will collect the informed consent. During the study, enrolled participants will be able to withdraw at any time and for any reason.
The study is conducted according to the following schedule:
- V1 : Inclusion during a preoperative visit
- V2: Surgery
- V3: Follow-up visit at 2 month post-surgery
- V4: Follow-up visit at 6 months post-surgery
- V5: Follow-up visit at 12 months post-surgery
The following data will be collected:
- Oxford Knee Score (OKS), Knee Society Score (KSS), Forgotten Joint Score (FJS) and patient satisfaction at 6 months and 12 months of follow-up;
- Radiological analysis at 2 and 12 months of follow-up;
- Surgical time (min);
- Necessity of soft tissue release to obtain ligament or patellar balance;
- Time to discharge (days);
- Device deficiencies and peri- and postoperative adverse events.
A web-based data collection tool will be used as Electronic Data Capture (EDC). All the information required by the protocol will be collected in electronic case report forms (eCRF).
The statistical analysis will be performed according to a pre-established statistical analysis plan. Missing values will not be replaced by estimated values but will be considered as missing in the statistical analysis.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Schaffhausen, Switzerland, 8200
- Privatklinik Belair
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Winterthur, Switzerland, 8401
- Kantonsspital Winterthur
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Winterthur, Switzerland, 8400
- Privatklinik Lindberg
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Zurich, Switzerland, 8008
- Uniklinik Balgrist
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Males and females aged over 18 years at time of surgery.
- Patients who are scheduled to receive Medacta GMK® Sphere system for primary TKA (class III, CE-marked).
- Patients with functional contralateral knee (i.e. without the need to use walking aids).
- Patients willing and able to provide written informed consent for participation.
- Patients willing to comply with the pre and post-operative evaluation schedule.
Exclusion Criteria:
Patients with one or more medical conditions identified as a contraindication defined by the labelling on any Medacta implants used in this study:
- Patients presenting with progressive local or systemic infection
- Muscular loss, neuromuscular disease or vascular deficiency of the affected limb, making the operation unjustifiable.
- Severe instability secondary to advanced destruction of condralar structures or loss of integrity of the medial or lateral ligament
- Patients whose prospects for a recovery to independent mobility would be compromised by known coexistent, medical problems.
- Patients affected by concomitant spine, hip, ankle or contralateral knee pathologies that can affect walking capacity.
- Patients unable to understand and take action.
- Patients with known allergy to the materials used.
- Patients in which Medacta GMK® Sphere system is used in emergency interventions.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Single-arm
Patients suitable to receive Medacta GMK® Sphere system for primary TKA will be invited to take part to the study during the preoperative visit.
Follow-ups are performed after 2, 6 and 12 months.
Data collection includes clinical and radiological data for preoperative and postoperative assessments, as well as intraoperative details.
|
The NextAR TKA system is a surgical guidance system which measures intra-operatively the effect of prosthesis alignment and positioning on soft tissue balance.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Functional outcome
Time Frame: 6 months
|
Oxford Knee Score (OKS)
|
6 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Functional outcome
Time Frame: 12 months
|
Oxford Knee Score (OKS)
|
12 months
|
Functional outcome
Time Frame: 6 months and 12 months
|
Forgotten Joint Score (FJS)
|
6 months and 12 months
|
Clinical and functional outcome
Time Frame: 6 months and 12 months
|
Knee Society Score (KSS)
|
6 months and 12 months
|
Radiological outcomes
Time Frame: 2 months and 12 months
|
Radiological assessment including implant positioning, presence of radiolucent lines, subsidence, migration of components, presence of heterotopic ossifications or osteolysis
|
2 months and 12 months
|
Safety outcomes
Time Frame: Intraoperative, 2 months, 6 months and 12 months
|
Device deficiencies and adverse events
|
Intraoperative, 2 months, 6 months and 12 months
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Surgical outcome - Surgical time
Time Frame: Intraoperative
|
Surgical time (min)
|
Intraoperative
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Surgical outcome - Necessity of soft tissue release
Time Frame: Intraoperative
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Necessity of soft tissue release to obtain ligament or patellar balance (Y/N)
|
Intraoperative
|
Surgical outcome -Time to discharge
Time Frame: 2 months
|
Time to discharge (days)
|
2 months
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Sandro Fucentese, Prof. Dr. med., Balgrist University Hospital
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- P02.022.02
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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