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Finger (Pad) Pointing: Repetitive-Use Injury Waiting to Happen
"My wrist and hand hurt. I spend all day working on computers and then I come home and spend more time on a computer, usually playing video games."
Understanding Levels of Evidence
The concept of levels of evidence is a cornerstone of research literacy and a great starting point for understanding basic principles of how research works.
The Need for Standards
ISO-TC-249: You may look at these letters and numbers and wonder what they are and what they might mean. They turn into: International Standards Organization- Technical Committee – 249. There is a global organization called The International Organization for Standardization.
Distal Style Treatment of Neurogenic Pain
Treat locally or distally? This question has frequented my thoughts for the treatment of pain throughout my acupuncture career. Each style has strengths and weaknesses, thus the versatile practitioner would do well to forgo dogmatic adherence to any one style in deference to the needs of the individual patient.
Sleepless nights, anxiety, mood swings, euphoric energy bursts, obsessive thinking, and a strange feeling in his chest. That is what Matt was experiencing when he first entered my practice. Rather than being concerned, he was loving every minute of it.
Keeping Malpractice Allegations at Bay
It has been suggested that in the litigious environment in which we live, the practice of chiropractic should be defensive and practitioners should constantly be watching their backs. An element of defensive practice is a good idea.
Discovery: Finding Insights and Each Other in Different Disciplines
Recently I've been thinking about all sorts of things which are hidden from our daily direct experience. That general category is what links nearly everything that catches my attention and then demands some kind of investigation.
Living Well: Lessons From Our Oldest Old
Aging is a significant public health problem, important to chiropractors in practice and important to DCs who teach students training to become chiropractors.
News in Brief
NYCC Aggregates Degree Programs in New School; Palmer Chancellor Receives Education Award From ICA; Oklahaven Announces "Have a Heart" Winners.
Hip Flexor Contractures & LBP in Above-the-Knee Amputations
Patients with above-the-knee amputations (AK or AKA) are particularly prone to developing hip flexor contractures. Not to be confused with muscle tightness, contractures are a permanent shortening of tissues which cause deformity or distortion.
Constructing Our Reality, Part 2
My last article discussed perception and its relationship to the primary channels. Before we get to the channels most commonly used to treat sensory disturbances, the small intestine and triple heater, we should first talk about the bladder channel.
A Different Way of Looking at It
The way you and your chiropractic colleagues access information has changed over the past decade. According to a recent survey conducted by Dynamic Chiropractic, almost half (48 percent) of DCs read online articles on their personal computer or laptop daily.
Holistic Skin Care and Modern Technology
Anti-aging is a concept that we hear in reference to skin rejuvenation and growing older on a daily basis. Aging begins as soon as we are born; therefore "pro-aging" is embracing all stages of life gracefully, with vitality, wisdom, joy, and gratitude as the goal.
Low Fat vs. Low Carb & the Power of Protein
A science-based website recently posted a nice summary of 23 randomized, controlled trials from peer-reviewed journals pitting low-carb diets against low-fat diets.
Parker University Embraces New Era
Change is in the air at Parker University, which recently announced the selection of both a new president and a new consultant for its seminar program.
Prostate Cancer Risk
A large study published in January 2016 in the American Journal of Clinical Nutrition showed that men who are vegans had a 35% lower risk of developing prostate cancer compared to non-vegan men. The study followed more than 26,346 men who are part of the Adventists Health Study-2.
Transforming Las Vegas
On a warm spring day in Las Vegas, Sonia Kim, clinic front desk staff, is busy preparing for a full day of intern shifts at Wongu Health Center. She greets patients, makes sure documents are properly signed, and lets the interns know that their patients have arrived.
Streamline Your Front Desk
Your front office can be your greatest source of efficiency or it can be a constant bottleneck. Increasing the productivity of this area, while not sacrificing the quality of patient interaction, can be a little tricky. However, with some focused effort and intention, your front desk can keep your practice running smoothly.
With Low-Back Pain, Sometimes Little Things Matter
Typical treatments for low back pain involve large muscles like the quadratus lumborum, iliopsoas, and piriformis. However, there are situations when a very small muscle, the multifidus, can play a significant role in the diagnosis and treatment of low back muscular or spinal injury.
Billing One-on-One, Direct Patient Contact
This is often misunderstood and leads to trepidation when documenting and subsequently billing timed services.
One of the most common trends to see in clinical medical practice and public health is the cycles of health "buzzwords." These come and go depending upon the current cultural zeitgeist. One year, "parasites" are causing all the issues, and the next year it's "candida."
A Whole-Body Approach to Chronic Tension Headaches
Nearly every day in our practices, we see patients with chronic headaches that have not responded to traditional treatment. They present in our offices with a feeble hope that "maybe" a chiropractor can help.
Billing Timed Services
Q: I do not always use physical medicine services but in my state I do have a scope of practice that allows me to provide many of these services. I am trying to understand what "direct one-on-one patient contact" means in relation to physical medicine services.
Building Bridges with Discipline
As practitioners of traditional Chinese herbal medicine, our role is to educate patients and medical practitioners about the various safety aspects of our medicine. Medical doctors that embrace Chinese medicine want to collaborate and include Chinese herbal medicine in more aspects of clinical care to support their patients.
In This Current Age of Anxiety
Anxiety, also referred to angst or hysteria, goes by many names. One, popularized by the sagacious Zhang Zhong Jing, who many practitioners of Chinese Medicine may be familiar with, is known as Restless Zang/Fu disorder.
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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