Motion Analysis of EMP Knee Versus Posterior Stabilized Knee Arthroplasty for Osteoarthritis

NCT ID: NCT00967161

Last Updated: 2015-11-18

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

COMPLETED

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-01-31

Study Completion Date

2015-06-30

Brief Summary

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The purpose of the current study is to analyze and compare the lower-limb joint motions and muscle activation patterns during activities of daily living as well as self reported health related functional outcomes for patients with osteoarthritis of the knee undergoing one of two types of knee replacements: the Evolution Medial Pivot knee (Wright Medical) or the Triathlon Posterior Stabilized (PS) knee (Stryker Orthopaedics).

Detailed Description

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Inclusion:

40 patients between the ages of 50 and 75 yrs undergoing unilateral total knee replacement for non-inflammatory degenerative osteoarthritis will participate, as well as 10 control participants will be recruited from the general population for the present study matching to experimental groups for age, gender and BMI.

Patients who do not meet any exclusion criteria.

Exclusion:

Potential participants for the control group will be asked if they have had degenerative osteoarthritis of lower-limb joints (hip, knee and ankle) and if they have they will be excluded.

Exclusion for patient group

1. Patients suffering from any other lower-limb joint disorders other than the one for which total knee arthroplasty.
2. Patients with any other joint replacement in the ipsilateral and contralateral limb.
3. Patients with evidence of active infection.
4. Patients with neurologic or musculoskeletal disease that may adversely affect gait, weight-bearing or quadriceps function.
5. Patients with neuropathic joints.
6. Patients requiring structural bone grafts.
7. Patients with a documented allergy to cobalt chromium molybdenum.
8. Patient with a BMI larger than 30 kg/m2.

Conditions

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Arthropathy of Knee Joint

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Blinding Strategy

NONE

Study Groups

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Evolution Medial Pivot Knee

20 Patients will receive the EMP Knee Implant

Group Type EXPERIMENTAL

Total Knee Arthroplasty

Intervention Type PROCEDURE

Total Knee Arthroplasty

Motion analysis

Intervention Type PROCEDURE

Motion analysis (Gait/EMG during walking and functional tasks)

Triathlon PS Knee

20 Patients will receive the Triathlon PS Knee

Group Type ACTIVE_COMPARATOR

Total Knee Arthroplasty

Intervention Type PROCEDURE

Total Knee Arthroplasty

Motion analysis

Intervention Type PROCEDURE

Motion analysis (Gait/EMG during walking and functional tasks)

Interventions

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Total Knee Arthroplasty

Total Knee Arthroplasty

Intervention Type PROCEDURE

Motion analysis

Motion analysis (Gait/EMG during walking and functional tasks)

Intervention Type PROCEDURE

Other Intervention Names

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non applicable non applicable

Eligibility Criteria

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Exclusion Criteria

* Potential participants for the control group will be asked if they have had degenerative osteoarthritis of lower-limb joints (hip, knee and ankle) and if they have they will be excluded.

Exclusion for patient group

1. Patients suffering from any other lower-limb joint disorders other than the one for which total knee arthroplasty.
2. Patients with any other joint replacement in the ipsilateral and contralateral limb.
3. Patients with evidence of active infection.
4. Patients with neurologic or musculoskeletal disease that may adversely affect gait, weight-bearing or quadriceps function.
5. Patients with neuropathic joints.
6. Patients requiring structural bone grafts.
7. Patients with a documented allergy to cobalt chromium molybdenum.
8. Patient with a BMI larger than 30 kg/m2.
Minimum Eligible Age

50 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Stryker Trauma and Extremities

INDUSTRY

Sponsor Role collaborator

Ottawa Hospital Research Institute

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Geoffrey Dervin, MD,MSc,FRCSC

Role: PRINCIPAL_INVESTIGATOR

OHRI / The Ottawa Hospital/ University of Ottawa

Locations

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The Ottawa General Hospital

Ottawa, Ontario, Canada

Site Status

Countries

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Canada

Other Identifiers

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OHREB 2009-240-01H

Identifier Type: -

Identifier Source: org_study_id