- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05464641
Randomised Total Knee Arthroplasty With Attune S+ or NexGen CR (NexGe)
Total Knee Arthroplasty With Attune S+ or NexGen CR Randomised Study of 150 TKR
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The Attune knee was launched in 2012. From a clinical point of view some studies indicate superior clinical performance of the Attune when compared to the PFC. Carey and Harty operated 21 patients with both the Attune and the POFC Sigma knees. At six months' clinical scores were superior for the Attune side as was range of movement. Ranawat 2017, matched 100 Attune to 100 PFC Sigma knee operations based on age, gender, side and BMI but found no difference in clinical results after 2 years.
Bonutti reviewed three hospital databases and described 2 cases with loosening of the tibial component due to debonding between the cement and the implant, but the total material from which these cases were collected was not known or mentioned. Turgeon studied the fixation of 30 consecutive cases operated with the Attune knee and observed a mean maximum total point motion of 0.08 mm between 12 and 24 months, which suggests an acceptably low risk of medium to long-term failure due to aseptic loosening. Staats evaluated incidence of radiolucent lines in 276 Attune and 253 PFC Sigma TKRs up to one year after operation and observed a higher incidence in the former group.
In the last report from NJR from 2020, the 5-year revision rate of the Attune FB knee is 2.71 (2.32-3.17), which is slightly above average (2.23, 2.20-2.26). In the Australian registry from 2020 the corresponding cumulative percent revision rate of cemented Attune CR is 3.0 % (2.7 - 3.5) at 5 years.
In an ongoing study the investigators have randomized 95 knees with knee osteoarthritis to either become operated with an Attune knee (n=49) or a PFC knee (n=46). Preliminary results at one year show almost equal results when evaluated in terms of Oxford Knee or Forgotten Joint Scores.
NexGen metal-backed tibia is the most commonly used total knee prosthesis in Sweden. Its revision rate is one of the lowest observed in the Swedish Register. The 5 years survival in the report from NJR from 2020 is 2.1% (2.05 - 2.21) and in the report from the Australian register it is about equal (2.0; 1.9 - 2.2). The Australian Register also present survival at 19 years amounting to 5.7% (4.7 - 6.9) being the lowest cumulative revision of those specific cemented TKRs accounted for with that long follow up.
In 2017 DePuy launched the Attune S+ tibial components in order to address the potential problem of loosening between the cement and the tibial tray. If and if so, to what extent this modification will change the clinical outcome of TKRs operated with this implant is not known. Based on the high survival rate of the in Sweden frequently used NexGen TKR a comparative study between the Attune S+ and the NexGen TKRs would provide an important benchmark for the performance of the Attune S+ knee.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Roland Zügner, PhD
- Phone Number: 0703101863
- Email: roland.zugner@gmail.com
Study Locations
-
-
-
Gothenburg, Sweden, SE 41310
- Recruiting
- Roland Zügner
-
Contact:
- Roland Zügner
- Phone Number: +46708586058
- Email: roland.zugner@gu.se
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Medial or lateral primary OA Ahlbäck Grade 2-4
- Varus or valgus deformity ≤10 degrees, extension defect ≤10 degrees
- Age 40-75 years
- BMI <35
- ASA 1-3.
- Coming from independent living in own home
- Written informed consent.
Exclusion Criteria:
- Cortisone treatment during the last 6 months before operation
- Neurological diseases with symptoms, stroke with sequel
- Endocrine diseases with symptoms
- OA secondary to trauma, infection, inflammatory disease or congenital and acquired deformities
- BMI >=35
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: preoperative
preoperative The Oxford Knee Score (OKS) is a 12-item patient-reported PRO, low score worse.
|
The Oxford Knee Score (OKS) is a 12-item patient-reported PRO, low score worse
|
Active Comparator: postoperative
postoperative The Oxford Knee Score (OKS) is a 12-item patient-reported PRO, low score worse.
|
The Oxford Knee Score (OKS) is a 12-item patient-reported PRO, low score worse
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Oxford knee score
Time Frame: preoperative
|
Oxford knee score, a 12-item patient-reported PRO
|
preoperative
|
Oxford knee score
Time Frame: 2 year postoperative
|
Oxford knee score, a 12-item patient-reported PRO
|
2 year postoperative
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Roland Zügner, PhD, Göteborg University
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
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
Keywords
Other Study ID Numbers
- Attune S+ or NexGen CR
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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