By Dennis Douda, WCCO-TV

MINNEAPOLIS (WCCO) — When high school gymnast Natalia Merrifield hyper-extended her knee, it took all the spring out of her step. That is not good when you’re the two-time defending state champ on vault and you can not even stand as tournament time nears.

Yet, Merrifield bounced back. She credits rehabilitation with chiropractor David Stude and five days of therapy with a high-tech device Dr. Stude has great faith in. The OrthoCor Active Knee System targets the joint with mild heat and a pulsed electromagnetic field.

“The research that’s been done on this device, so far, shows that it’s really, really beneficial at reducing inflammation and accelerating the healing process, reducing swelling, reducing pain,” said Dr. Stude.

It certainly worked wonders for Merrifield.

“I used that diligently two times a day for two hours each time (for five consecutive days) and it was like a miracle,” Merrifield said. “It was incredible.”

Attached by Velco strips, the lightweight, stretch-wrap device can be worn over or under clothing. The rechargeable PEMF generator automatically turns itself off after two hours of therapy.

The Minneapolis-based OrthoCor CEO & President John Dinusson said research has shown the device to be medically beneficial.

“We’re FDA cleared or approved for both pain and arthritis, as well as post-operative pain and edema (swelling) for superficial soft tissue,” said Dinusson.

A 2010 study published by the Orthopedic Research Society reported a 45 percent reduction in osteoarthritis pain.  And last year the journal of Plastic and Reconstructive Surgery reported a 55 percent reduction post-operative pain.

Considering there are an estimated 10 million Americans with osteoarthritis in their knees, plus a million knee surgeries done in this country each year, Dinusson expects to see a demand for the device.

“We have huge patient populations that are actively looking for a solution between pills and a total knee replacement,” he said.

The device costs $250 and, as a Class III medical device, requires a prescription. In the next six to nine months OrthoCor hopes to also have FDA clearance for similar devices for the wrist, elbow, ankle and lower back.

Comments (9)
  1. Dr. Jared Post @ Advance Chiropracitc says:

    Advance Chiropractic Clinic in Rochester, MN is just getting involved with this phenomenal device. The product seems easy to use, comfortable to wear and from what is written on this page – the results seem to be outstanding and easy to obtain! If you are in this area and have knee pain or reduced function, I’d urge you to stop in for an evaluation to see what this device might be able to do for you. The OrthoCor device will be a big hit for millions of patients, I’m sure.

    1. Dr. Jared Post @ Advance Chiropracitc says:

      Forgot to mention our website in case you are looking for more information or to follow up with us:

  2. SarahDowning says:

    now, at least i’ve heard a positive feedback about knee surgery. Thanks to this very resourceful report Dennis. This is a contrasting report about zimmer knee recall.

  3. Kymm Schroetter says:

    I used the knee system post knee replacement diligently for 2 weeks as prescribed, unfortunately, it did not help my pain and swelling. I am not the usual patient as I have numerous leg issues from an old car accident. (1982).

  4. SidCantor says:

    I am confused radio waves in my head are dangerous but in my leg they are not?

    1. Dr. Jared Post @ Advance Chiropracitc says:

      Sid, from what I understand, the OrthoCor system uses electricity from the battery to create a weak magnetic field, similar to an electromagnet. The general consensus is that magnets and magnetic fields are safe. Most homes have several magnets, including those stuck to the refrigerator door. A cellular telephone, however, emits radiation (including microwave radiation) that has been linked to the possibility of increased cancer rates. The use of the OrthoCor system is safe and pulsed magnetic fields are being used successfully to decrease pain and promote healing all over the globe.

  5. Chiropractor in Lakeville says:

    Very good resource for potential knee pain resolutions, not sure we will be using this in our clinic Chiropractor in Lakeville but it is good to know that these options are out there to help with patients.

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