We're building a better ClinicalTrials.gov. Check it out and tell us what you think!
ClinicalTrials.gov Menu

Nuclear Magnetic Resonance Therapy in Knee Osteoarthrosis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01603017
Recruitment Status : Completed
First Posted : May 21, 2012
Last Update Posted : May 21, 2012
Information provided by (Responsible Party):
S Barker, NHS Grampian

Brief Summary:

Nuclear Magnetic Resonance Therapy (NMRT) is gaining as a novel mode of therapy in osteoarthrosis. A prospective double blind randomised study of 100 patients was conducted to investigate efficacy of NMRT in the treatment of mild to moderate osteoarthrosis (OA) of the knee joint.

The null hypothesis was that there is no benefit of NMRT over placebo in mild to moderate oteoarthosis of the knee.

Condition or disease Intervention/treatment Phase
Osteoarthrosis Device: MRI therapy Device: MRI therapy (off) Not Applicable

Detailed Description:

This study was approved by the Regional Ethics Committee. Patients were recruited from referrals made by General Practitioners to a single Orthopaedic Outpatient Department between October 2007 and February 2008. The study was a prospective placebo controlled, double blind randomised mono centric study with a follow up period of 6 months.

All potential trial participants demonstrated symptomatic mild to moderate OA of the knee joint diagnosed by an experienced consultant orthopaedic surgeon. Radiographic evidence was gathered by means of standard clinical standing antero-posterior and lateral radiographs of the knee.

Baseline assessment included :

  1. clinical examination
  2. active Range of movement
  3. plain radiographs
  4. WOMAC osteoarthritis index
  5. Oxford Knee Score (OKS)
  6. Severity of pain VAS.
  7. Strength and frequency of any painkillers taken.
  8. Phyasiotherapy Study design was directed at use of NMRT in a clinical setting. It was therefore considered valid to not restrict the use of the pain killers and physiotherapy. Positional Magnetic Resonance Imaging (pMRI) scan of the knee joint was undertaken.

Randomisation was carried out by means of visually identical computer chip cards numbered from 1 to 100 which had been independently programmed by the manufacturer. Thus, half of the computer chip cards (n=50) were programmed to activate the magnetic fields (= treatment group) and remaining half (n=50) were programmed not to activate magnetic fields (=placebo group) of the device. The research team and patients were blinded to the programmed activity of the cards. The magnetic resonance indicator LED lamp on the device was disabled by the manufacturer to ensure that the operator and patients were blinded to the therapy status. Every patient entering the study was asked to choose a numbered card from those available, and this card was then used to operate the device for that specific patient for all five sessions of NMRT.

The study used the manufacturer's clinical recommendation for therapy. Patients were subjected to one-hour sessions of NMRT (or placebo) on five consecutive days, giving a total of five hours of NMRT (or placebo). This was given on an outpatient basis.

The device is made up of twelve independently controlled coil systems that are spaced orthogonally. These are designed to produce a 3-dimensional therapy field. Along with a separately generated permanent magnetic field, the 3-dimensional therapy field forms a nuclear resonance field in the center of the coil system. The desired dose of NMRT is achieved with the help of MBST® - Treatment software, which is controlled by a computer chip card. The device can generate a magnetic field of 3.0 mT (typical) and maximum of 10 mT extending up to 30 cm around the device.

Patients were called for review at 1 week (1w), 1 month (1m), 3 months (3m) and 6 months (6m) when clinical examination, WOMAC osteoarthritis index and OKS were repeated. They were also asked to record VAS and details of painkillers taken during the week before each review. Due to the lack of recognised analgesia equivalencies, the quantity of pain killers taken were graded with reference to the amount and frequency taken at baseline - less than baseline was graded as 1, same as baseline was graded as 2 and more than baseline was graded as 3.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 100 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Nuclear Magnetic Resonance Therapy in Knee Osteoarthrosis: A Double Blind Ranomised Controlled Trial
Study Start Date : September 2007
Actual Primary Completion Date : December 2008
Actual Study Completion Date : December 2008

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Placebo Comparator: Placebo - no therapy
Patients who were blinded but did not receive therapy
Device: MRI therapy (off)
5 treatment where MRI therapy machine was switched off (both patient and therapist blinded to this by use of electronic 'prescription cards'). (n=50)
Other Names:
  • MBST-01, Version KSRT, Type 300 KSRT,
  • Serial Nos. 12100411 and 23490318,
  • manufactured by AD Elektronik GmbH, Wetzlar, Germany

Experimental: MRI therapy
Patients receiving MRI therapy but blinded to it
Device: MRI therapy
5 treatments with magnetic field delivered to knee (n=50)
Other Names:
  • MBST-01, Version KSRT, Type 300 KSRT,
  • Serial Nos. 12100411 and 23490318,
  • manufactured by AD Elektronik GmbH, Wetzlar, Germany

Primary Outcome Measures :
  1. Oxford Knee Score [ Time Frame: 12 weeks ]
    Patient administered validated questions

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Osteoarthrosis of the knee(s)
  • Moderately severe (grade 1-2)

Exclusion Criteria:

  • Prior knee surgery
  • Implanted metallic devices

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01603017

Layout table for location information
United Kingdom
Woodend Hospital
Aberdeen, Scotland, United Kingdom, AB15 6XS
Sponsors and Collaborators
NHS Grampian
Layout table for investigator information
Principal Investigator: Simon L Barker, MD NHS Grampian
Layout table for additonal information
Responsible Party: S Barker, Consultant Orthopaedic Surgeon, NHS Grampian
ClinicalTrials.gov Identifier: NCT01603017    
Other Study ID Numbers: 06/S0802/131
First Posted: May 21, 2012    Key Record Dates
Last Update Posted: May 21, 2012
Last Verified: May 2012
Keywords provided by S Barker, NHS Grampian:
Magnetic Resonance Therapy
Additional relevant MeSH terms:
Layout table for MeSH terms
Osteoarthritis, Knee
Joint Diseases
Musculoskeletal Diseases
Rheumatic Diseases