Caring Medical - Where the world comes for ProlotherapyDigital Motion X-ray (DMX)

DMX: An X-ray Movie of Your Body in Motion

Digital Motion X-ray can show:what-is-pain-WEB

DMX is a motion picture of the bones while a person is moving. It is a dynamic diagnostic tool, versus a static one, and can be used for all joints of the body. The scan is produced in real time, while the person is moving. Other terms for Digital Motion X-ray used in the medical literature or cineradiography or video fluoroscopy. DMX can show spinal and peripheral joint instability from ligament damage. Pain typically occurs with motion. By being able to see the bones in motion, DMX picks up the abnormal or excessive motion whereas MRI, CT scan and static x-rays do not.

DMX is an ideal way to document underlying instability in chronic joint pain

joint-stabilityWhen a person has joint instability, the increased motion between two adjacent bones causes excessive tension on the supporting structures and the nerve endings within those structures (which are not stretchable really) causing severe chronic pain. Most of the time the injury or weakness is in the ligamentous support of the joint.  It is the primary responsibility of the  ligaments to connect adjacent bones. When ligaments are injured, torn and weakened the adjacent bones move excessive and the body to limit this motion does one of the three things:  1. swells the joint; 2. causes muscle spasms around the joint; 3. bone spurs to form over the long-term. (See Figure) All of which limit motion. Cortisone shots to limit swelling, massages to relax muscles and surgeries to remove bone spurs often have only temporary effects because they don’t address the underlying cause of the issue which is joint instability. Prolotherapy, on the other hand, is the only treatment that addresses the instability in a non-surgical manner, thereby offering long term pain relief.

How is a Digital Motion X-ray performed?

Patient in Digital Motion X-ray machine

Patient in Digital Motion X-ray machine

Once in position, the person puts his or her neck, spine or peripheral joint through a series of motions while the DMX is videotaping the bone movement. Digital Motion X-ray is similar to a movie camera. The camera takes 30 individual x-ray frames per second to create the motion x-ray. The successive x-rays are digitized and sequenced to create a video representation of movement of the bones. Sometimes, additional views are done where the joint is put under stress: by the person holding a weight, by the person doing a specific exercise, or by the radiology technician or physician putting passive pressure in a certain direction to help document the instability.

If I already had x-rays and MRI, how is Digital Motion X-ray helpful?

Stationary x-rays and MRIs don’t typically show the cause of most chronic pain: joint instability from ligament injury. The ligaments are the connectors of the joint, connecting one bone to another. When the connectors are not tight, the bones move too much. Ligament damage from car accidents, exercise and routine twisting and bending are often not seen on routine x-rays and MRIs. However, can be more easily seen using Digital Motion X-ray while the person is moving, or while there is pressure on the joint.

How quickly will I know my results?DMX-Ross-WEB (1)

You will receive a disc with your actual scan on it immediately. An official report will be sent to you and the referring provider within five business days. For patients of Caring Medical, the Prolotherapist will go over the DMX at your appointment. For patients who have Prolotherapy treatment scheduled for the same day as their DMX, the treatment will be done after the DMX exam.

The report will be a comprehensive analysis of what was found during the exam, providing you and your healthcare team the information you need to make informed decisions on diagnoses and future medical care. Check out Ross Hauser’s DMX Report, taken after he had been suffering from cervical radiculopathy. The report clearly shows cervical instability, which was then treated with Prolotherapy to stabilize the cervical vertebrae and stop the radiculopathy.

Is DMX good for my case?

Caring Medical Regenerative Medicine Clinics has been ordering DMX scans on individuals for many years to document joint instability. This has been helpful for certain conditions that can have severe consequences if not properly diagnosed, as well as in trying to more fully understand the extent of the joint damage. These cases can include:

How much radiation exposure is there with DMX?

The annual occupational dose limits recommended by the Code of Federal Regulations in the United States for adults to be exposed to are 5000 mrem for the whole body.10

Common Radiation Doses in mrem.

Source Amount of Exposure (mrem)1-10
MRI or ultrasound 0
X-ray inspect at airport .002
Airplane travel/per hour 0.5
One static Cervical image with DMX 7
½ pack of cigarettes smoked 18
Standard chest x-ray 20
One standard static hip x-ray 70-120
One standard static X-ray of cervical spine 70-120
DMX full exam of peripheral joint 150-350
Complete lumbar/cervical standard x-ray series 600-800
Average annual exposure in US 620
Complete DMX neck exam (90 seconds) 672
Normal Fluoroscopy (non-DMX machine) 750
(90 seconds of continuous exposure)
CT of spine 1000
High dose Fluoroscopy (non-DMX machine) 1500
(90 seconds of exposure)

 
1Radiation Dose Chart. American Nuclear Society.  http://ww.ans.org/pi/resources/dosechart/   5/28/2014

2Crawley MT, Rogers AT. Dose area product measurements in a range of common orthopaedic procedures and their possible use in establishing local reference levels. Br J Radiol. 2000; 73:740-744.

3Mahesh M. Fluroscopy: patient radiation exposure issues.  The AAPM/RSNA Physics Tutorial for Residents. Presented at December 1999 Radiological Society of North America scientific assembly, Chicago IL.  From The Russell H. Morgan Department of Radiology and Radiological Science, John Hopkins University of Medicine, Baltimore MD.

4Tuohy CJ, Weikert DR, Watson JT. Hand and body radiation exposure with the use of mini C-arm fluoroscopy. J Hand Surg Am. 2011;36:632-8.

5Kim TW, Jung JH, Jeon HJ. Radiation exposure to physicians during interventional pain procedures. Korean J Pain. 2010;23:24-27.

6Exposure rates between a standard static x-ray system and a digital motion x-ray system (DMX). Personal correspondence with Dr. Ross Hauser from owner of DMX Dr. John Postlethwaite, document dated September 24, 2013. www.dmxworks.com.

7Fact sheet on biological effects of radiation.  United States Nuclear Regulatory Commission.  May 28, 2014  http://www.nrc.gov/reading-rm/doc-collections/fact-sheets/bio-effects-radiation.html

8Manchikanti L, Cash KA, Moss TL, Pampati V. Radiation exposure to the physician in interventional pain management. Pain Physician 2002;5:385-93.

9Cho JH, Kim JY, Kang JE. A study to compare the radiation absorbed dose of the c-arm fluoroscopic modes. Korean J Pain. 2011; 24:199-204.

10Singer G. Radiation exposure to the hands from mini C-arm fluoroscopy. J Hand Surg Am 2005;30:795-7.

Where can I learn more about DMX?

The below referenced articles address the cervical and lumbar spine uses with DMX. You can also learn a lot on http://www.dmxworks.com/

Cervical Spine

Yoshimoto, H. Kinematic evaluation of atlantoaxial joint instability: in vivo cineradiographic investigation. Journal of Spinal Disorders 2001; 14 (1): 21-31

Hino, H. Dynamic motion analysis of normal and unstable cervical spines using cineradiography. An in vivo study. Spine 1999; 23: 163-168

Buonocore, E. Cineradiograms of Cervical Spine in Diagnosis of Soft-tissue injuries. JAMA 1966;198(1):25-29

Shaff, A.  Video fluoroscopy as a method of detecting occipitoatlantal instability in Down’s syndrome for Special Olympics. Chiropractic Sports Medicine 1994; 8 (4):144

Betge, G.  The value of cineradiographic motion studies in diagnosis of dysfunctions of the cervical spine. Journal of Chiropractic 1979; 2(6):40-44

Woesner, M.  The evaluation of cervical spine motion below C2: a comparison of cineroentgenographic and conventional roentgenographic methods. AJR Am J Roentgenol 1972; 115:148-154

Shippel, A.  Radiological and Magnetic Resonance Imaging of cervical spine instability: A case report. Journal of Manipulative and Physiological Therapeutics 1987; 10 (6)

Howe, J.  Preliminary observations from cineroentgenological studies of the spinal column. ACA Journal of Chiropractic 1970; IV

Robinson, G.K.  Cinefluoroscopic joint motion study of the post traumatic cervical spine. Digest of Chiropractic Economics 1984; Nov/Dec:156-157

Lumbar Spine

Takayanagi, K.  Using cineradiography for continuous dynamic-motion analysis of the lumbar spine.  Spine 2001; 26 (17):1858-1865

Motomochi M, Makita Y, Kamijo Y, et al.  Diagnosis of abnormal spine motion with cineradiography. No Shinkei Geka. 1978;Nov6(11):1077-1082. [Article in Japanese]

Okawa A.  Dynamic motion study of the whole lumbar spine by videofluoroscopy. Spine 1998; Aug 15;23 (16):1743-9

Mertz JA.  Videofluoroscopy of the cervical and lumbar spine.   ACA J of Chiro 1981; 18 (8):74

Kanayama M, et al.  A cineradiographic study on the lumbar disc deformation during flexion and extension of the trunk.  Clinical Biomechanics 1995;10(4): 193-199

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