MINIMALLY INVASIVE SURGERY in Total Knee Arthroplasty

NCT ID: NCT00853398

Last Updated: 2014-05-23

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

Clinical Phase

PHASE4

Study Classification

INTERVENTIONAL

Study Start Date

2004-10-31

Study Completion Date

2007-12-31

Brief Summary

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Overall study design:

A prospective, randomized, multi-center clinical studies comparing the minimal invasive and the standard surgical total knee replacement technique (control) using the Genesis II total knee system. The study will collect efficacy, safety and socio-economical data over 2 years. An additional 5 years follow-up interval is optional. The objectives (short-term follow-up) of the study are to:

1. Assess whether the improvement in Pain and Range of motion per Knee Society scoring system and VAS score.
2. Assess whether there are any differences between the surgical techniques as regards complication rate.
3. Assess whether the hospital stay and the rehabilitation time (Straight leg raise, Active/passive ROM) of the patients differs between the two techniques.
4. Assess the x-ray mechanical alignment between the two techniques.

Attempts will be made to assess whether the collected peri-operative data (including incision length, blood loss, wound appearance, hospital readmissions and operative time) differs between the two surgical techniques.

The primary objectives (mid-term follow-up) of the study are to:

1. Improvement in Pain and Function per Knee Society Scoring system
2. Number and Extent of Radiographic Lucencies \>2mm
3. Revision and knee-related adverse events
4. Improvement in Quality-of-life via the VAS score

5 investigational sites will participate and enroll a total of approximately 250 patients over a 12 months period. Thus, each site will enroll 50 patients.

Detailed Description

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Conditions

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Osteoarthritis of the Knee

Study Groups

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Minimal Invasive Surgery,

Group Type EXPERIMENTAL

surgical technique

Intervention Type PROCEDURE

Standard Surgical Technique

Group Type ACTIVE_COMPARATOR

surgical technique

Intervention Type PROCEDURE

Interventions

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surgical technique

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* require primary uni- or bilateral total knee arthroplasty; available for 2 year follow up; provide informed consent; is in stable health for cardio-pulmonary conditions.

Exclusion Criteria

* inefficient femoral or tibial bone stock; BMI \>35; fixed flexion deformity \>15 degrees; knee flexion of \<90 degrees; varus/valgus deformity \>20 degrees; active local infection; conditions that would compromise the 2 years follow up.
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Smith & Nephew Orthopaedics AG

INDUSTRY

Sponsor Role lead

Locations

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Orthopaedic Department, University Hospital

Tübingen, , Germany

Site Status

Countries

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Germany

Other Identifiers

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MIS_GEN_II_6112003

Identifier Type: -

Identifier Source: org_study_id

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