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How Much Do You Know About the Benefits of Birds Nest?
Edible bird's nest is the nest made by the Swiftlet bird of Southeast Asia that is usually prepared as a soup and prized in Chinese culture as a healthful delicacy.
We Get Letters & Email
A House Divided? (May 1 issue) provoked significant response from readers. Here are several of the surprisingly similar comments we received.
5 Tips for Using Pinterest to Market Your Practice
Pinterest is a very popular, but often under-utilized, social media platform where people can bookmark, or "pin," fun and interesting things from all across the internet.
The Challenges of Integrating Eastern and Western Medicine
My Masters thesis was titled, "The Challenges of Integrating Eastern and Western Medicine," which highlighted several reasons why it is hard for these two worlds to mix.
Professional Credentialing and Board Certification: An Ethical Faux Pas
Because of the Affordable Care Act, health care systems are coordinating care through accountable care organizations (ACOs) in order to reduce the cost of care and improve quality of care.
Leg-Length Inequality and Pelvic Fixation: A New Approach to the Negative Derifield (Part 2)
As we noted in our previous article, with a positive Derifield (+D), the doctor observes the reactive (shorter) leg in the prone position that becomes longer or "crosses over" in the flexed position.
Rethinking Musculoskeletal Pain – A Public Health Perspective
The American Public Health Association (APHA) is the world's oldest and largest association of its kind, founded more than 140 years ago and boasting over 25,000 members.
Integrating Art with Clinical Practice for Patients with PTSD: The Artemis Project
Are you restricted by those one-on-one clinic dynamics? Why not join colleagues and clients in experimental group settings? Three of us volunteered to do just that in Austin on behalf of women veteranss from all branches of the service.
Spieth Thanks His Chiropractor After Historic Masters Win
Jordan Spieth didn't just capture the hearts of golf enthusiasts worldwide with his record-setting, wire-to-wire victory at the 79th Masters Tournament.
First Do No Harm?
There's no questioning the frightening nature of breast cancer, which strikes one in eight women in the U.S. – eclipsed only by skin cancer in terms of prevalence.
Giving Vets the Care They Deserve
The Department of Veterans Affairs (VA) administers the largest integrated health care system in the United States.
A Poor Choice for Pain Relief
Acetaminophen is the most popular pain reliever in the U.S., accounting for an estimated 27 billion annual doses as of 2009. With 100,000-plus hospital visits a year by users, it's also the most likely to be taken inappropriately.
Reducing the Autogenic Inhibition Reflex: Making Weak Muscles Strong
The autogenic inhibition (AI) reflex is a sudden relaxation of a muscle in response to excess tension.
Animal Acupuncture: A Case Study in the Treatment of Traumatic Injury in the Equine
The rise of animal acupuncture in the U.S. began in the early 1970's as a result of the work by members of the National Acupuncture Association in Westwood, Calif.
Medicine is Clumsy, Don't You Be
All medical systems have clumsiness in them. If the technique isn't, the practitioner is. Everyone in every form of medicine is striving to improve. That is why we call it practice.
Marijuana, Apathy and Chinese Medicine, Part 1
This article was written in response to the unheeded acceptance of marijuana as a harmless substance that potentially does good when used for the medical relief of pain.
Our Biggest Challenges to Compete in Wellness Care
In the first article in this four-article series [May 1 DC], I made the case that chiropractors should either embrace offering lifestyle wellness in their practices or face the possibility of losing their place in the wellness care marketplace.
Green Tea Improves Cognitive Function in Elderly Subjects
Publishing their results in the journal Nutrients in May 2014, researchers showed that drinking the equivalent of 2-4 cups of brewed green tea (or bottled tea) daily improved cognitive function or reduced the progression of cognitive dysfunction in elderly subjects.
The Tide is Rising in the Acupuncture Profession
Former President Ronald Regan said, "When the tide rises all boats float." The tide is rising for the acupuncture profession. Many forces outside the profession are helping the tides to rise.
The Acupuncturist's Problem
I want share with you some observations and insights into what seems to be the most common problem my colleagues in the acupuncture profession struggles with. If you also struggle with this problem, I hope you get a valuable "aha" moment from reading this.
ACA or ICA: Which Best Represents You?
Last June, I was honored to represent Texas ICA members as their representative assemblyman at the ICA Annual Meeting in Kansas City.
PCOM Granted Regional Accreditation
Pacific College of Oriental Medicine (PCOM) recently announce it has received regional accreditation from the Western Association of Schools and Colleges (WASC). This achievement reflects five years of hard work on the part of faculty, staff, and students.
May, 2005, Vol. 05, Issue 05
The Pinched Nerve Conundrum
By Erik Dalton, PhD
For decades, manual therapists, biomedical researchers and neuroscientists have battled over the conceptual ideology of pinched nerves. One group holds the belief that spinal misalignments cause or contribute to disease by choking "nerve energy" to body tissues.Others generally agree that the human body probably does possess some sort of universal energy system, but quickly point out that nerves do not appear as conductors of this "life-force" energy. To allow the reader to grasp both sides of this very important issue, this article will provide an overview of current theories that spur the controversy. Following an initial review of the various nerve impingement theories, let us review the two most pressing, yet basic, questions:
One age-old premise supporting the pinched nerve theory follows this logic: If a spinal segment is not in its normal position, nerve pathways between the vertebrae (intravertebral foramina) will partially close resulting in nerve impingement. As the nerve root undergoes compression, soft tissues and organs supplied by the pinched nerve suffer from decreased nerve energy flow to the affected body parts. Thus, according to this theory, alterations in joint structure and function result not only in pain but an increased susceptibility to disease from spinal obstructions impinging on these nerves.
Detractors counter that nerves do not emit a flow of energy. Since nerves are gland cells, their primary function is to produce and release a hormone that causes muscle cell inhibition or contraction. Basically, that is all they do - no more, no less; therefore, these supporters believe that nerves do not actually conduct electricity or any other form of energy.
When a nerve cell undergoes its function of hormonal secretion, changes occur in its outer cell membrane allowing electrically charged ions to move in and out of the cell in a step-by-step fashion along the full extent of the nerve. This is often referred to as "conducting an impulse" or "firing." A spinal nerve as it exits the intervertebral foraminal opening is actually a thin tube of connective tissue containing extensions of millions of nerve cells. These extensions are axons or "fibers." The latter term appears misleading for it connotes a certain firmness similar to fine electrical wires. Sadly, nothing could be further from the truth.
Axons are delicate, flimsy structures. Since they consist of elongated or drawn out parts of cells, nourishment is needed along with the cells that make up their sheaths. Vital nutrients are supplied by blood vessels embedded in what is termed a "visible-level nerve." If acute nerve compression does not directly kill the axons, they may die from compressive forces blocking blood flow within the vessels of the nerve. Nerve occlusion prevents axoplasmic flow of nutrients to be properly transported up and down the length of the nerve.
Another Snapshot of Pinched Nerves
The nerve root itself has been dismissed by most researchers as a pain-sensitive structure, although most clinicians do agree that nerve compression from herniated discs, spinal stenosis and spondylolisthesis can cause radiculopathies such as sciatica. Acute compression of a normal healthy nerve may lead to paresthesias, motor loss, sensory deficits and reflex abnormalities, but pain is absent. However, if an inflamed nerve suffering intraneural edema is compressed, pain is present. This "silent nerve root compression syndrome" hypothesizes that time is required for functional alterations, such as nerve tethering, to cause mechanical nerve fiber deformation and resulting pain.
Compression of an inflamed nerve anywhere along its extent can cause it to secrete its specific hormone. Pressure on an inflamed sensory nerve cell can cause the brain to experience pain (nociception). If an obstruction compresses a motor nerve cell, the hormone secretion can cause a muscle cell to contract (protective muscle spasm). When motor nerve cells to a skeletal muscle die from complete occlusion, the muscle becomes paralyzed as observed in extreme cases of sciatica and thoracic outlet syndrome. One of the first signs of complete nerve occlusion is muscle atrophy followed by a loss of normal neurological reflexes.
Nociceptive ... or Pinched Nerve Pain?
Over the past decade, researchers working with magnetic resonance imaging (MRIs) have demonstrated that no matter how much a normally functioning spine is compressed or twisted, there is ample room in the intervertebral foramina for free movement of the nerve. It is postulated that in a healthy spine, nerve root compression shouldn't exist even with all the intervertebral discs removed. Still, another viewpoint bears consideration.
While conditions such as intraneural edema and ischemia from prolonged nerve-root abuse certainly causes pain in a certain percentage of the population, it is also possible much of the reported pain may be due to sensory receptor overload from postural imbalances. For example, recall what happens when the typical client injures their back. As the spine is subjected to sudden asymmetrical loading, the major stress focuses at the capsule of the articular facets as the joint is moved beyond its acceptable range of motion (physiologic barrier).
Sprained capsules and ligaments cause joint mechanoreceptor hyperexcitability and protective muscle guarding. Muscles aren't designed to be restraining tissues even though the deepest transversospinalis muscles are often awarded that task. As deep intrinsic muscles are subjected to abnormal sustained loading, nociceptive stimuli warn the brain of the possibility of tissue damage.
When nociceptors fire in response to actual tissue damage from macro- or microtrauma during routine daily activities, they quickly become major myofascial and spinal pain generators. Through a process called sensitization, an aberrant hard-wiring pattern is "burned" into the central nervous system (CNS). Long-term CNS agitation from angry nociceptors causes the brain to twist and torque the body in an effort to avoid pain.
Understanding and Treating the Dysfunction
As discussed earlier, the joint receptor concepts attempt to override the idea that pain is primarily a consequence of "pinched nerves" that could ultimately be freed by removing the bony or muscular obstruction. Many neurophysiologists now believe that restoration of proper postural alignment and range of motion successfully reduces pain by stimulating mechanoreceptors in fibrous joint capsules, spinal ligaments and transversospinalis muscles. To achieve a noticeable reduction of increased excitability in the neuronal pool, the pain-generating stimulus must be interrupted until the memory burned into the nerve cells has been completely "forgotten." For many chronic pain cases, a "serial-type" deep tissue therapy works best where clients are seen twice weekly until hyperexcited receptors feeding the CNS are quieted.
Although spinal nerves travel through small intervertebral foramen openings, rarely does a bone-on-nerve dysfunction occur. Significant facet hypertrophy, disc collapse or intraneural edema must accompany the vertebral misalignment before the client experiences pain. While commonly associated with the spine, pinched nerve compressive lesions are actually rare.
What has made the "pinched nerve theory" so popular is that therapists viewing anatomy texts or cadavers can easily visualize how spinal nerves could become entrapped as they make their way through the bony little holes between vertebrae. Regrettably, nociceptors and mechanoreceptors cannot be seen.
For most of mankind, it is far easier to believe something we can see versus something invisible to the naked eye. Despite this human tendency, massage therapists must understand that spinal joints and muscles have massive nociceptive innervation that is profoundly affected by sustained compressional loading from tension, trauma and poor posture. While not clearly apparent, sensory receptors are the primary reason for client visits.
Click here for more information about Erik Dalton, PhD.
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