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2502 NYCC TRANS FINAL2 - New York Chiropractic College

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esearch<br />

ROUNDUP<br />

Visiting <strong>Chiropractic</strong> Researcher<br />

Shares Findings With <strong>NYCC</strong> Audience<br />

Dr. Partap Khalsa, D.C., Ph.D., F.A.C.O., Assistant Professor of<br />

Biomechanical Engineering, Orthopaedics & Neurobiology at SUNY<br />

Stony Brook and current Graduate Program Director for Biomedical<br />

Engineering, presented his research to <strong>NYCC</strong> faculty, staff and<br />

students on October 26. Discussing Capsule Strains During Physiological<br />

Motions Following Simulated Subluxation, he explored the biomechanical,<br />

neurophysiological and temporal aspects of subluxations.<br />

Dr. Khalsa explained how cells throughout the body – particularly<br />

nerve cells – respond to events or movement, and how nerve<br />

synapses change in response to training and learning. This observation<br />

proved relevant in his search to find spinal structures as likely<br />

candidates for investigating functional proprioception. In developing<br />

his research model, he considered a variety of tissues including<br />

muscles, ligaments, posterior annulus discs, skin, fascia, and joint capsules.<br />

“Nature,” as he put it, “ tends to concentrate lots of neurons<br />

in tissues that it cares about biologically.” For example, muscles have<br />

relatively few neurons, while joint capsules are densely populated<br />

with neurons. Hence, proprioception research is better served by<br />

investigating joint capsules rather than muscle.<br />

Dr. Khalsa began his study by removing the muscle tissue (though<br />

not the ligaments) from unembalmed, dissected spines. The spinal<br />

specimens were potted at the sacrum in a “Bondo type” material to<br />

secure the spine in an upright position during the experiment. To<br />

study the movement of the spine and the facet joint capsule, he<br />

placed measurement markers in a rectangular configuration to measure<br />

distortions in joint capsule resulting from spinal movements in<br />

various planes. The effects of simulated hypomobile subluxations<br />

on vertebrae above and below the subluxation were studied by inserting<br />

a single orthopaedic plate at L4-5 in the lumbar spine. With<br />

the sacrum firmly planted onto a solid base, a mechanical motordriven<br />

device moved the spine through various ranges of motion<br />

and a digital camera-type recording device measured the movement<br />

of the markers on the facet capsule. Follow-up analyses were able to<br />

calculate the stretch and shear forces exerted on the joint capsule in<br />

the frontal and sagittal planes. Dr. Khalsa reported that the restriction<br />

of the L 4-5 joint accurately modeled a hypomobile subluxation<br />

which significantly reduced, but did not eliminate, motion at L4-5.<br />

The result also confirmed a significant 20-30% increase in motion<br />

and plane strains in the joint capsules above and below the simulated<br />

subluxation. This finding confirms the chiropractic philosophy and<br />

teaching regarding the mechanical effects of one specific type of<br />

subluxation – the hypomobile variety – on adjacent structures possibly<br />

contributing to the pathologies associated with LBP.<br />

Dr. Khalsa urged students in the audience to consider their own<br />

research possibilities and potential contributions to the profession<br />

by offering valuable tips. “Find a topic that is sexy,” he urged. Dr.<br />

Khalsa’s use of the term “sexy” had an obvious economic implication.<br />

The National Institute of Health (NIH) found Dr. Khalsa’s<br />

research sufficiently sexy, in part, due to the $50 billion spent annually<br />

in the United States for the treatment of low back pain, along<br />

with an additional $50 billion in lost wages and consequential costs.<br />

The NIH currently has funded his research through the Consortial<br />

Center for <strong>Chiropractic</strong> Research (CCCR), which also currently funds<br />

the neurophysiology research of Drs. Dishman and Burke in the<br />

Research Department at <strong>NYCC</strong>.<br />

Dr. Partap Khalsa<br />

Dr. Khalsa, D.C., Ph.D., F.A.C.O. is an Assistant Professor of Biomechanical<br />

Engineering, Orthopaedics & Neurobiology at S.U.N.Y., Stony Brook<br />

and currently serves as the Graduate Program Director for Biomedical Engineering.<br />

He had a private practice in Massachussetts for 17 years and is boardcertified<br />

in chiropractic orthopaedics and has served terms as President and V.P.<br />

of his local chapter of the Massachussetts <strong>Chiropractic</strong> Society. Dr. Khalsa<br />

received his <strong>Chiropractic</strong> degree from L.A.C.C. in 1970, a master’s of biomechanical<br />

engineering from Boston University in 1992, and a Ph.D. of biomedical<br />

sciences from WPI in 1995. He is the recipient of numerous awards, and is<br />

one of only 3 chiropractors to receive a National Research Service Award from<br />

the NIH. He has authored many original research articles that have been<br />

published in the Journal of Neurophysiology, Journal of Biomechanics, Neuroscience<br />

Letters, Journal of Orthopaedic Research and a review article in the<br />

ACA’s Journal of the Neuromusculoskeletal System.<br />

www.nycc.edu<br />

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