Knee Imlant, Knee Injuries, Osteo Arthritis Knee, Total Knee Arthroplasty
Conditions
Brief summary
In vivo knee kinematics will be assessed for 20 subjects that have been implanted with either a MicroPort Medial Pivot or DePuy Attune posterior cruciate retaining (PCR) total knee arthroplasty (TKA) by Dr. Russell Nevins of Nevada Orthopedic & Spine Center \[this is the location from which participants will be recruited\].
Detailed description
There will be ten subjects with the MicroPort implant and ten with the DePuy Attune implant; however, we will increase enrollment to 24 subjects (12 in each group) to ensure that researchers acquire the necessary 20 usable datasets for analysis and also to account for any subjects that may drop out of the study. All TKAs should be judged clinically successful based on the surgeon's evaluation and each patient's Forgotten Knee Score. Each subject should have a well-functioning prosthesis, be at least six months post-operative, and should have good-to-excellent post-operative passive flexion.
Interventions
DEVICEMicroPort Medial Pivot TKA
Subjects will have been implanted with the MicroPort Medial Pivot TKA
DEVICEDePuy Attune PCR TKA
Subjects will have been implanted with the DePuy Attune PCR TKA
Sponsors
The University of Tennessee, Knoxville
MicroPort Orthopedics Inc.
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Subjects will have either a MicroPort Medial Pivot or DePuy Attune PCR TKA. * Subjects must be at least six months post-operative. * Participants must be judged clinically successful based on the surgeon's evaluation and their Forgotten Knee Score. * Participants must be able to perform the required activities - stepping up and a deep knee bend. * Subjects must be willing to sign the Informed Consent (IC) / HIPAA form to participate in the study
Exclusion criteria
* Pregnant, potentially pregnant or lactating females. To satisfy radiation protocol, each female subject will be asked if she is pregnant, or possibly could be pregnant. A pregnant person will not be allowed to participate in the study. * Subjects without one of the two types of knee implants under investigation. * Subjects who are unable to perform stepping up and deep knee bend. * Subjects who are unwilling to sign Informed Consent/ HIPAA documents. * Does not speak English.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Kinematics Translations during Deep Knee Bend Activity | at least 6 months post-operative | Anterior Posterior (AP) translations of lateralfemoral condyles during deep knee bend |
| Kinematics during Deep Knee Bend Activity | at least 6 months post-operative | Maximum weight-bearing flexion during DKB Axial Rotation (AR) during DKB |
| Kinematics Translations during step up activity | at least 6 months post-operative | Anterior Posterior (AP) translations of lateralfemoral condyles during step up activity |
| Kinematics during step up activity | at least 6 months post-operative | Maximum weight-bearing flexion during DKB Axial Rotation (AR) during step up activity |
Countries
United States
Contacts
PRINCIPAL_INVESTIGATORRichard Komistek, Ph.D.
The University of Tennessee
Outcome results
None listed