Minimally Invasive Knee Replacement Outcomes (MIKRO) Study (MIKRO)

April 25, 2013 updated by: Dartmouth-Hitchcock Medical Center

A Randomized, Prospective, Blinded Clinical Trial Comparing Two Total Knee Replacement Techniques

The purpose of this study is to evaluate and compare the clinical, radiographic (x-ray) and cost effectiveness outcomes (cost relative to risks and benefits) of two different minimally invasive knee joint replacement surgical techniques. The primary study hypothesis is that in comparing total knee replacement performed with the two different surgical techniques that respect four minimally invasive surgery principles (low-profile instrumentation, "minimally invasive" incision, overall minimal knee surgical intervention), a faster return to function will result when the technique does not incise the tendon.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

This study does not include financial compensation for treatments involved.

Study Type

Interventional

Enrollment (Actual)

131

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New Hampshire
      • Lebanon, New Hampshire, United States, 03756
        • Dartmouth-Hitchcock Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

35 years to 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Presence of severely symptomatic knee osteoarthritis that has failed non- operative treatment
  • Males and non-pregnant females, 35-85 years of age at the time of surgery
  • ASA class 1 or 2
  • Procedure will not require computer navigation
  • Patient/Surgeon has not requested another implant
  • Patient has signed an IRB approved study consent form
  • Patient is able and willing to actively participate in post-operative rehabilitation program
  • Patient understands study requirements
  • Patient is willing to comply with follow-up visits and diary documentations
  • Patient is capable of independent ambulation

Exclusion Criteria:

  • Skeletal immaturity
  • More than 10 degrees of valgus or varus deformity as measured from a weight bearing AP alignment view
  • Patients with bilateral knee osteoarthritis who are considering a simultaneous bilateral procedure
  • Bone or ligament insufficiency that requires the use of augments or stems, or constrained component
  • Daily pre-operative use of narcotic pain medication
  • Prior knee arthroplasty
  • Patient is a prisoner
  • Patient has had prior tibial tubercle osteotomy
  • Patient's surgical knee would require removal of hardware prior to TKA
  • Patient has < 95 degrees flexion pre-operatively

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Single Group Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: 1
- Medial Parapatellar Arthrotomy (MPPA) technique
Procedure: MPPA
- Medial Parapatellar Arthrotomy
Active Comparator: 2
- Subvastus (SV) technique
Procedure: SV
- Subvastus Technique

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Primary outcome: clinical outcomes in the Subvastus Total Knee Arthroplasty versus Medial Parapatellar surgical groups, using the Knee Society Score.
Time Frame: 5 years
5 years

Secondary Outcome Measures

Outcome Measure
Time Frame
Secondary outcome: Includes cost-effectiveness of the Subvastus Total Knee Arthroplasty versus Medial Parapatellar surgical groups; EQ-5D, SF-12; radiographic assessment using Knee Society Radiographic Assessment.
Time Frame: 5 years
5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Dartmouth-Hitchcock Medical Center

Collaborators

Zimmer Biomet

Investigators

  • Principal Investigator: Ivan M Tomek, MD, Dartmouth-Hitchcock Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2007

Primary Completion (Actual)

September 1, 2012

Study Completion (Actual)

September 1, 2012

Study Registration Dates

First Submitted

March 4, 2008

First Submitted That Met QC Criteria

March 4, 2008

First Posted (Estimate)

March 11, 2008

Study Record Updates

Last Update Posted (Estimate)

April 29, 2013

Last Update Submitted That Met QC Criteria

April 25, 2013

Last Verified

April 1, 2013

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MIKRO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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