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The App Advantage: Get More for Less
You may have noticed the list of "app-exclusive" articles in the directory on the front page of the print issue and in the Table of Contents on page 4. You can't find these articles in print or even in our online archives.
Helping to Create the Healthiest Generation
The imperative to create the "Healthiest Generation by 2030," envisioned by the American Public Health Association (APHA), was in full force at the APHA's 142nd Annual Meeting held in New Orleans from November 15-19, 2014.
Fight Colorectal Cancer With Folic Acid
CRC is the second most common cause of cancer mortality in the U.S. and Canada. Although genetic susceptibility plays a role in the etiology of CRC, dietary factors, including certain vitamins, have also been shown to influence the development of the disease in various studies.
How to Use Online Video as a Tool to Market Your Practice
Health care practitioners, including chiropractors, should consider online videos as a key element of their Internet marketing strategy. In the next three years, videos are expected to account for nearly 70 percent of all consumer online traffic, according to Cisco.
The Way of Zen Performance Enhancement
Working with elite athletes and implementing various techniques to keep athletes focused and at their optimal performance for a sustained period of time includes incorporating various meditation techniques that counterbalance their sport-specific physical and mental demands, which is an important element of success throughout the years.
We Get Letters & Email
Rethinking Our Approach to Immunization; Coming Together for the Good of Our Patients.
AWB Makes a Difference in the Yucatan
We are in the sleepy town of Izamal, located about an hour from the Merida airport where our group arrived last night. Later that morning, on a bus winding through the dusty roads of the Yucatan, fourteen acupuncturists, two facilitators from AWB and two tour guides make their way to the small rustic town of Popola.
Two for One: The Cervical Distraction Test
In today's healthcare system, diagnoses and treatment plans follow a western medical model - especially if you work with attorneys or insurance companies.
Chiropractic Research in Review
Occupational LBP in Primary- and High-School Teachers; Treating MVA Complications With Chiropractic Care; Neck Pain: Immediate Effects of Active Scapular Correction; Taping Benefits Stride, Step Length in Fatigued Runners.
Ringing in the Billing New Year
What are the new modifiers that replace modifier 59? Will they allow doctors of chiropractic to be paid for 97140, manual therapy, when done with chiropractic manipulation?
Right Back Where We Started?
More than 25 years after Judge Susan Getzendanner issued her historic opinion in the Wilk v AMA anti-trust case, evidence suggests that despite increasing collaboration between doctors of chiropractic and their allopathic medical counterparts, when it comes to organized medicine, we may be right back where we started.
Show Up and Show Respect
I was recently asked about my chiropractic philosophy. My answer surprised my questioner.
Acupuncture and its Place in the Integrative Healthcare Practice: The Need to Move from Modality to Profession
Acupuncture and oriental medicine (AOM) has grown and flourished from its inception thousands of years ago in China. In surrounding regions of Asia, AOM developed as a response to differing cultural, pathological, health and wellness care needs.
The Conscious Evolution of Healing: Importance of Opening the Sensory Portals in Classical Chinese Medicine
The Chinese medical classics are not just clinical guides. They give advice; ways we can awaken more fully into conscious awareness.
Professionalism and Evidence-Based Health Care
Today's chiropractors are facing a conundrum with the Affordable Care Act and its health care reform requirements, including evidence-based practice and health technology assessment.
Animal Acupuncture Gaining in Popularity
We have just finished the year of the fire hoarse and now it is time to spend some time alone, daydreaming and thinking outside the box in terms of where our profession is headed. The sheep person is well organized and creative so this should not be difficult to do.
Trouble Down Under: San Zhen Therapy for Lower Jiao Issues
In the last several columns, I have discussed many clinical options for utilizing San Zhen or Three Needle Therapy. In this installment, I will continue this trend and discuss several foundational patterns which can be found in several very common clinical presentations.
Age and Fertility: Why We Should Worry Less About Age and More About Overall Health
Recently, on one of the acupuncture alumni forums, the topic of age and fertility came up when a practitioner posted a question regarding a patient that was about to turn 40-years-old.
Movement Assessments: The DC's Sphygmomanometer
I think back to when I was going through chiropractic school outpatient clinic. I was embarrassed to have my family and friends come in for treatment because initial evaluations took three hours to complete.
News in Brief
While indignation may be your immediate reaction to H.R. 5780, the Protecting the Integrity of Medicare Act of 2014, the American Chiropractic Association suggests the legislation is just what the chiropractic profession needs.
Environmental Toxins: Cause of Modern Illness, Part 2
In Part I of this article, we detailed the variety of environmental toxins assaulting our bodies. These include pesticides and herbicides; plastics; preservatives; cosmetics; gasoline additives, solvents and glues; and heavy metals.
The Static Postural Pelvic Exam
I include a static postural analysis in my evaluation routine whether you are a patient in pain or an elite-sport athlete in training. In my day-to-day practice, I require patients to stand still while I "just look" at them.
Taking the Freeze Out of Adhesive Capsulitis
Adhesive capsulitis or "frozen shoulder" is a relatively common condition resulting in severe shoulder pain and global loss of glenohumeral joint range of motion. Incidence of the condition is approximately 3 percent in the general population.
I Felt it in My Fingers First
I'm not afraid to say it. Massage therapists make better acupuncturists. I'll tell you how I know, but first I have a question: What do a microcurrent device, a laser and a hippie massage therapist have in common?
Three for One: The Cervical Distraction Test
Taking the time to do an exam is important, but it is time spent. The exam serves as a way to physically validate your clinical impression following a history and clinical consultation.
May, 2008, Vol. 08, Issue 05
The Controversy of Cranial Bone Movement
By Lisa Johnson Zee; guest author for John Upledger, DO, OMM
Editor's note: Dr. Upledger has asked guest author Lisa Johnson Zee to share her thoughts on cranial bone movement in this month's column.
In anatomy and physiology, I learned that cranial bones fuse in early adulthood or childhood.1 Gray's Anatomy supports the theory that the sutures grow together, creating a solid mass of bone called the calvarium. The fused skull functions as a helmet in which volume or pressure changes in blood, cerebrospinal fluid (CSF) or brain tissue cause corresponding pressure changes in other systems to prevent an increase of intracranial pressure.
However, there is a sizable body of literature that documents a small, rhythmic movement of the cranial bones. The bulk of these studies come from the cranial osteopathy medical field. The following is a synopsis of some of these studies.
Tettambel used force transducers to measure movement between the frontal bone and bilateral mastoid processes of the temporal bone in 30 subjects.2 She recorded three rhythms including the cardiac and respiratory rhythms. She hypothesized that the third pulse, which averaged eight cycles per minute, was the craniosacral rhythm.
Frymann studied the rhythmic changes in the circumference of the head using a U-shaped frame with a differential transducer.3 Changes in the diameter of the skull were measured by the displacement of metal rods. This study is unique because it measured movement in live human subjects. Frymann found a pulsating rhythm between six and eight cycles per minute separate from cardiac and respiratory rates. The amount of displacement was measured between 10 and 30 microns.
Another study by Adams, et al., looked at parietal bone mobility in cats.4 These researchers fastened strain gauges to feline parietal bones to measure movement when injections of artificial CSF were given. The bones moved significantly, varying from 17 to 70 microns. External lateral head compression caused a measurable widening of the sagittal suture with an inward rotation of the parietal bones.
Researchers at the University of Michigan College of Osteopathic Medicine have looked at cranial bone mobility in adult primates.5 Michael and Retzlaff used a direct screw attachment on the right parietal bone and measured movement with a pressure transducer. They also measured blood pressure, heart rate and respiration rate. The parietal bones moved spontaneously in two distinct rhythms, one corresponding to the respiration rate and a second, slower rate of five to seven cycles per minute.
These four studies indicate cranial bones may show a slow, steady, cyclical movement. A relatively new theory for Western medical science, it represents a dramatic shift. Bringing controversial ideas into the status quo of scientific thought is not easy, but the body of literature supporting cranial movement is growing. Although inconclusive, it deserves to be approached with an open mind.
In CranioSacral Therapy (CST), the rhythm of CSF can be palpated at all parts of the body due to the passive action of fascial connective tissue. The rhythm occurs in two distinct phases: flexion (outward movement) and extension (inward movement). In physical therapy terms, flexion is a decreasing measurement of degrees in the angle of the joint. The sphenobasilar joint is where the posterior sphenoid articulates with a ridge on the occipital bone.
When Dr. William Garner Sutherland, the "father of osteopathy," palpated the movement of these bones, he noticed this joint does indeed flex or reduce angle size on the inferior side. The flexion of this angle is accompanied by subtle outward movement in the body, which Sutherland called flexion. Therefore, in CST, the cranium, along with the rest of the body, is in flexion when it widens and in extension when it narrows.
Anatomy of Suture Closure
To discover more about cranial bone motion, let's examine the nature of cranial sutures. If the sutures remain flexible throughout adulthood, some degree of motion is possible when driven by pressure changes in the craniosacral system. If the tissues fuse and become immobile, rhythmic motion is unlikely.
Several studies have examined the nature of the cranial sutures. Retzlaff, et al.,used light and scanning microscopy to examine tissue samples of adult primate sutures.6 They found connective tissue, blood vessels and nerve fibers present in the sutural space. They described a five-layered pattern of fibers and cells containing collagenous bundles. Tissue was reported to be arranged in a wavy pattern. The researchers hypothesized the purpose of the tissue might be to control the elongation of the collagen bundles. They reported no evidence of fusion in the adult primate sutures.
In a separate study, Upledger and Retzlaff examined the sagittal suture in primate skulls.7 They found not only connective tissue, but also a vascular network and neuronal plexuses and receptors in sutural tissue. In one specimen, they were able to trace a single dendrite through the dural membrane into the brain, terminating in the third ventricle containing CSF. Further study of this neural tract may bring answers to how the homeostatic feedback mechanism in the brain's CSF hydraulic system functions.
In the 1920s, Todd and Lyon published two articles examining a timeline of sutural closure in the male human skull.8 These researchers hypothesized that cranial sutures fuse at some point in the human lifetime. They started with 427 specimens, but rejected 81 due to abnormal suture closure or "delayed union." Furthermore, some of the skulls were termed lapsed union, which meant failure of the suture to close due to a concentration of bone along the edge of the articulatory surface. For reasons unclear, they counted these skulls as fused, which biased results toward earlier suture closure. The data they found is as follows:
The authors concluded that the sutures tend to close along this timeline. However, there is a high degree of variability reported. This study also was conducted some 80 years ago. Standards of protocol in scientific research have changed.
Researchers have studied one suture in-depth using different human specimens. Kokich examined one suture in the facial area - the frontozygomatic suture.9 Of his 61 specimens, he found none demonstrated closure until after age 80, and some weren't completely fused even after age 90. He noted that bony interdigitations formed along the suture with advancing age, but did not affect the patency of sutural movement. Kokich, like Retzlaff and Upledger, found clear evidence of collagen fibers within the suture. He stated that frontozygomatic suture remains a functioning "articulation" until late in life.
A conclusive statement about whether and when sutural fusion occurs cannot be made from existing research.10 Clearly the subject remains open for debate. Having palpated the craniosacral rhythm with my own hands, I believe cranial sutures maintain flexibility that might best be called articulation. This flexibility allows the bones to move passively as they are driven by the craniosacral system.
Click here for previous articles by John Upledger, DO, OMM.
Lisa Johnson Zee is a clinical supervisor and instructor in the Communication Disorders and Sciences Program at Southern Illinois University Carbondale. She is certified in CranioSacral Therapy Techniques through The Upledger Institute. Her other interests include complementary and alternative medicine, traumatic brain injury and bilingual Spanish/English therapy.
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