In Vivo Kinematics for Subjects Implanted With Klassic Total Knee Arthroplasty (TKA)

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

21 participants

Study Classification

OBSERVATIONAL

Study Start Date

2018-10-01

Study Completion Date

2019-06-05

Brief Summary

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In vivo knee kinematics will be assessed for 20 subjects that have been implanted with a Total Joint Orthopedics Klassic knee system by Dr. Aaron Hofmann of the Hofmann Arthritis Institute's Center for Precision Joint Replacement. This is the location from which all participants will be recruited and where fluoroscopy data collection will occur. Participants will undergo fluoroscopic surveillance of their implanted knee using a C-arm fluoroscopic unit while performing a deep knee bend activity at least six months post-operatively.

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Detailed Description

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Enrollment will be increased to 24 subjects 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. At present, all TKA available for surgeons to use are asymmetric where there is a distinct femoral and tibial component for the left knee and a distinct femoral and tibial component for the right knee. The Klassic knee system is a symmetrical knee implant, where the same femoral and same tibial component can be used for either the right or left knee. The kinematics for the 20 knees will be analyzed, including condylar roll-back, axial rotation, range of motion, and condylar lift-off

Conditions

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Total Knee Arthroplasty Osteo Arthritis Knee Knee Implant Knee Injuries

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

RETROSPECTIVE

Study Groups

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Klassic TKA

Subjects implanted with a Klassic TKA. Subjects will undergo flouoroscopic evaluation during a deep knee bend evaluation and the postoperative kinematics will be reported.

Klassic Knee System

Intervention Type DEVICE

At present, all TKA available for surgeons to use are asymmetric where there is a distinct femoral and tibial component for the left knee and a distinct femoral and tibial component for the right knee. The Klassic knee system is a symmetrical knee implant, where the same femoral and same tibial component can be used for either the right or left knee

Interventions

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Klassic Knee System

At present, all TKA available for surgeons to use are asymmetric where there is a distinct femoral and tibial component for the left knee and a distinct femoral and tibial component for the right knee. The Klassic knee system is a symmetrical knee implant, where the same femoral and same tibial component can be used for either the right or left knee

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. Subjects will have a Klassic knee system.
2. Subjects must be at least six months post-operative.
3. Participants must be judged clinically successful with their most recent (new) Knee Society "Knee Score" equal to or greater than 80.
4. Participants must be able to perform a deep knee bend.
5. Subjects must be willing to sign the Informed Consent (IC) / HIPAA form to participate in the study.
6. Must speak English.

Exclusion Criteria

1. 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.
2. Subjects without the required type of knee implant.
3. Bilateral subjects (i.e., patients with both knees implanted)
4. Subjects who are unable to perform a deep knee bend.
5. Subjects who are unwilling to sign Informed Consent/ HIPAA documents.
6. Subjects who do not speak English

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No