Gait Kinematics After Primary Total Knee Arthroplasty (TKA) Versus Revision TKA

Study Overview
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Brief Summary
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The functional outcomes after TKA are satisfying with a full recovery at 6 months - 1 year. Nevertheless, the revisions of TKA have often lower functional results than primary TKA with a long delay of recovery. The Stryker TKA present the same device for primary TKA and for revision. The aim of this study is to compare the gait kinematics at 6 months after primary Stryker TKA or Revision Stryker TKA to assess if the objective outcomes are similar with this device.

Official Title
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Assessment at Short Term of the Gait Kinematics After Primary TKA (Stryker) Versus After Revision TKA. Prospective and Controlled Study.

Conditions
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Knee Arthroplasty, Total, Gait Analysis

Intervention / Treatment
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* Device: Group primary TKA
* Device: Group TKA revision


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Primary TKA group: symptomatic femorotibial osteoarthritis, with an indication of primary TKA (as Triathlon Stryker) Revision group: first TKA removal in 1 step for mechanical failure, by a revision TKA (as Triathlon Stryker) Exclusion Criteria: Septic failure Second or more failure in the revision group Associated surgical procedure as osteotomy, allograft… Not full weight bearing postoperatively Refusal to participate

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group primary TKA<br>Patients operated of primary TKA Stryker for knee osteoarthritis. | Device: Group primary TKA<br>* Assessment by gait kinematics analysis The total knee arthroplasty will be performed as usual with the dedicated instrumentation. The gait kinematics analysis will be performed with the KneeKG system on a treadmill, with infrared sensors (IR) on the leg. This system is not invasive. The IR sensors are positioned on the pelvis, the distal femur and the tibial crest. This system records the flexion/extension, the varus/valgus and the rotation during the walking (1 minute of walking).<br>* Other names: Total knee arthroplasty;|
| Group TKA revision<br>Patients operated of a first revision of TKA for a mechanical failure, with the revision Stryker TKA | Device: Group TKA revision<br>* Assessment by gait kinematics analysis The total knee arthroplasty will be performed as usual with the dedicated instrumentation. The gait kinematics analysis will be performed with the KneeKG system on a treadmill, with infrared sensors on the leg. This system is not invasive. The IR sensors are positioned on the pelvis, the distal femur and the tibial crest. This system records the flexion/extension, the varus/valgus and the rotation during the walking (1 minute of walking).<br>* Other names: Total knee arthroplasty;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Femorotibial mechanical axis (varus, valgus) analysis | These parameters are measured with the KneeKG system during the walking | at 6 months postoperatively | 
| range of motion (flexion, extension) analysis | These parameters are measured with the KneeKG system during the walking | at 6 months postoperatively | 
| internal/external rotation analysis | These parameter is measured with the KneeKG system during the walking | at 6 months postoperatively | 
| Walking speed | These parameter is measured with the KneeKG system | at 6 months postoperatively | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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gait kinematics, TKA