A Single Time-Point Study to Evaluate the ConforMIS iTotal (PS) Knee Replacement System Versus Off-the-Shelf

NCT ID: NCT03146819

Last Updated: 2023-10-25

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Total Enrollment

31 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-12-16

Study Completion Date

2017-05-31

Brief Summary

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This study is designed to compare outcome data for patients who have recently undergone surgery with the iTotal® Posterior Stabilizing (PS) Knee Replacement System (hereafter referred to as the "iTotal") versus those who have undergone surgery with Off-the-Shelf (OTS) systems.

Detailed Description

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This is a prospective, single-time point study that will be conducted in the US.To compare outcomes of these two study groups, this study will include routine office questionnaires such as the Knee Society Score (KSS) and the Knee Injury and Osteoarthritis Outcome Score (KOOS).The functional testing used in this study consists of tests that physical therapists use daily as objective methods to assess patients' functional status. The testing is designed to closely mimic daily activities with which the subjects are familiar.

Conditions

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Osteoarthritis, Knee

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

OTHER

Study Groups

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iTotal PS KRS

Patients who have had an iTotal (posterior stabilized) knee replacement at least 6 months prior to testing.

iTotal PS Knee Replacement System

Intervention Type DEVICE

Total Knee Replacement systems (Patient Specific)

Off-the-Shelf KRS

Patients who have had an off-the-shelf (posterior stabilized) knee replacement at least 6 months prior to testing.

Off-the-Shelf Knee Replacement System

Intervention Type DEVICE

Total Knee Replacement systems (Off-the-shelf)

Interventions

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iTotal PS Knee Replacement System

Total Knee Replacement systems (Patient Specific)

Intervention Type DEVICE

Off-the-Shelf Knee Replacement System

Total Knee Replacement systems (Off-the-shelf)

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Implant must be a minimum of 6 months post-op and doing well in the opinion of site staff
* Subject has had a knee replacement utilizing a fixed bearing PS (Posterior Stabilized) implant design
* \> 18 years of age
* Willingness to participate in the clinical study, to give informed consent, and to perform all evaluations

Exclusion Criteria

* Simultaneous or staged bilateral procedure
* BMI \> 40
* Other physical disability that requires an aid for walking or disability affecting the hips, spine, contralateral knee or other joint that limits function
* Participation in another clinical study which would confound results
* Inability to complete the protocol in the opinion of the clinical staff due to safety or other reasons
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Restor3D

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Christopher Cannova, MD

Role: PRINCIPAL_INVESTIGATOR

Bethesda Orthopedic

Locations

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Bethesda Orthopedic

Bethesda, Maryland, United States

Site Status

Countries

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United States

References

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Bourne RB, Chesworth BM, Davis AM, Mahomed NN, Charron KD. Patient satisfaction after total knee arthroplasty: who is satisfied and who is not? Clin Orthop Relat Res. 2010 Jan;468(1):57-63. doi: 10.1007/s11999-009-1119-9.

Reference Type BACKGROUND
PMID: 19844772 (View on PubMed)

Kurtz S, Ong K, Lau E, Mowat F, Halpern M. Projections of primary and revision hip and knee arthroplasty in the United States from 2005 to 2030. J Bone Joint Surg Am. 2007 Apr;89(4):780-5. doi: 10.2106/JBJS.F.00222.

Reference Type BACKGROUND
PMID: 17403800 (View on PubMed)

Lepage C, Noreau L, Bernard PM. Association between characteristics of locomotion and accomplishment of life habits in children with cerebral palsy. Phys Ther. 1998 May;78(5):458-69. doi: 10.1093/ptj/78.5.458.

Reference Type BACKGROUND
PMID: 9597060 (View on PubMed)

McCarthy CJ, Oldham JA. The reliability, validity and responsiveness of an aggregated locomotor function (ALF) score in patients with osteoarthritis of the knee. Rheumatology (Oxford). 2004 Apr;43(4):514-7. doi: 10.1093/rheumatology/keh081. Epub 2004 Jan 13.

Reference Type BACKGROUND
PMID: 14722348 (View on PubMed)

Mizner RL, Petterson SC, Clements KE, Zeni JA Jr, Irrgang JJ, Snyder-Mackler L. Measuring functional improvement after total knee arthroplasty requires both performance-based and patient-report assessments: a longitudinal analysis of outcomes. J Arthroplasty. 2011 Aug;26(5):728-37. doi: 10.1016/j.arth.2010.06.004. Epub 2010 Sep 20.

Reference Type BACKGROUND
PMID: 20851566 (View on PubMed)

Noble PC, Conditt MA, Cook KF, Mathis KB. The John Insall Award: Patient expectations affect satisfaction with total knee arthroplasty. Clin Orthop Relat Res. 2006 Nov;452:35-43. doi: 10.1097/01.blo.0000238825.63648.1e.

Reference Type BACKGROUND
PMID: 16967035 (View on PubMed)

Nordin E, Rosendahl E, Lundin-Olsson L. Timed "Up & Go" test: reliability in older people dependent in activities of daily living--focus on cognitive state. Phys Ther. 2006 May;86(5):646-55.

Reference Type BACKGROUND
PMID: 16649889 (View on PubMed)

Podsiadlo D, Richardson S. The timed "Up & Go": a test of basic functional mobility for frail elderly persons. J Am Geriatr Soc. 1991 Feb;39(2):142-8. doi: 10.1111/j.1532-5415.1991.tb01616.x.

Reference Type BACKGROUND
PMID: 1991946 (View on PubMed)

Suda AJ, Seeger JB, Bitsch RG, Krueger M, Clarius M. Are patients' expectations of hip and knee arthroplasty fulfilled? A prospective study of 130 patients. Orthopedics. 2010 Feb;33(2):76-80. doi: 10.3928/01477447-20100104-07.

Reference Type BACKGROUND
PMID: 20192137 (View on PubMed)

Wall JC, Bell C, Campbell S, Davis J. The Timed Get-up-and-Go test revisited: measurement of the component tasks. J Rehabil Res Dev. 2000 Jan-Feb;37(1):109-13.

Reference Type BACKGROUND
PMID: 10847578 (View on PubMed)

Zaino CA, Marchese VG, Westcott SL. Timed up and down stairs test: preliminary reliability and validity of a new measure of functional mobility. Pediatr Phys Ther. 2004 Summer;16(2):90-8. doi: 10.1097/01.PEP.0000127564.08922.6A.

Reference Type BACKGROUND
PMID: 17057533 (View on PubMed)

Other Identifiers

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15-001

Identifier Type: -

Identifier Source: org_study_id

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