resourcesABOUT MT AUTHOR GUIDELINES CLASSIFIEDS EDITORIAL CALENDAR MEDIA GUIDE MASSAGE MART SCHOOLS & EDUCATION FEEDBACK
A Daily Strategy for Heavy-Metal Detox
In modern society, we are constantly exposed to heavy metals such as cadmium, lead and mercury. These heavy metals have no essential biochemical roles in our body, and conversely, can cause us a great deal of harm if they build up to toxic levels.
Taking the Chiropractic Message to the Press
"There is no better place on earth to have a news event," the National Press Club boasts, and it's easy to understand why: Every year, the 108-year-old Washington, D.C.-based organization hosts countless press conferences on the hottest topics impacting America and often the world.
Raditation & Your Smartphone: Is it Worth the Risk?
If radial arteries could talk (and in my experience they can to some extent), they would say, "Step away from the smartphone." At least that is the message I am receiving loud and clear as I feel the pulses of many patients.
Give Yourself the Digital Advantage
When you see this article in the print version of this issue and swear you read it already, don't be alarmed: you probably did. That's because by that time, the May issue will have been available online in digital format for three weeks.
A Major Role in Back Pain: The Multifidus
Back pain affects roughly 80 percent of the population at one time or another and is one of the leading causes of doctor visits.
Women's Hormones: A Western & Eastern Perspective
Sometimes it may seem that you require a degree in medicine to understand hormones and how they function.
An Integrated Approach to Chronic Pain
Findings from a unique Medicaid pilot project in Rhode Island involving high-use Medicaid recipients from two health plans were recently presented to the state's Department of Health, demonstrating stellar outcomes with regard to medication use, ER visits, health care costs and patient satisfaction.
New Relationships, Old Trauma: AOM & Other Healing Strategies
Being in love is one the most beautiful and enjoyable experiences. Most of us are willing to pay almost any price to have that experience, and still often find it elusive or fleeting. Navigating the ups and downs of loving relationships are often challenging — even for the most psychologically balanced among us.
Is the New Medicare Reporting Exemption Right for You?
What you've heard is not a rumor – there will be exemptions for providers of Medicare patients, with no penalties assessed for offices that do not do Quality Payment Program (EHR, PQRS, MACRA and MIPS) reporting.
Eczema & Acupuncture: A Sound Solution (Part 1)
Eczema affects approximately 3.5 percent of the global population and is one of the most common skin complaints seen by dermatologists.
Why I Quit Doing House Calls
My father was a chiropractor who did house calls, so when I became a DC, I figured doing house calls was part of the job. My March article recalled my experience as a small boy, accompanying my dad while he went to patients' homes to treat them.
News in Brief
ACA Adopts New Governance Model; ACA 2017 Awards; CCA Helps Calif. DCs "Share the Love"; $1 Million to Help Advance the Profession; D'Youville Raises the Bar on Anatomy Education; ErRatum.
Clearing Blocks: A Way to Improve Cosmetic Acupuncture
As a Five Element acupuncturist who teaches facial acupuncture classes nationally, I was surprised to learn that one of the basic principles I was taught in school is unfamiliar to most acupuncturists.
Is It Time to Rethink Mental Illness? (Pt. 1)
Invariably, patients will ask their chiropractor about depression or various mental illnesses. Some practitioners will reflexively offer a cervical adjustment, suggest St. John's wort or contemplate a referral to a specialist.
Universal Design: Principles & Practice
In many respects, universal design serves as the core of ergonomics. It's also a good tool to use when designing a return-to-work program for injured and/or ill patients. Let's take a closer look at universal design and why it should matter to you and your patients.
Bill With Confidence: Learn What to Collect
Q: I am trying to understand what I may collect from my patient when there is insurance. Do I have to accept the amount allowed by the plan or may I collect up to my billed amount? Please note, I am not a member of any insurance plan.
An Unexpected Diagnosis: The Result of Lacking Communication
A couple years ago I had a case that showed me the importance of open communication between health practitioners. We need to show up with less fear, and let go of our judgments so we can do better for the patient.
Creating Good Business Buzz
What do patients really think about working with you? Rarely do you hear the whole truth. Those who improve may be candid in their gratitude.
The Visual Error Scoring System: A Concussion Tool
Postural stability and oculomotor function are the most easily recognized physical indicators of neurologic motor dysfunction associated with concussions.
Balancing Spring Challenges
As the winter months come to a close and warmer spring weather appears, patients may begin to present with new challenging pattern presentations.
May, 2001, Vol. 01, Issue 05
Snap, Crackle and Pop, Part I
By Neal Cross, PhD, NCTMB
The human temporomandibular joint (TMJ) is involved in the etiology of several clinical complaints, including jaw pain, tongue pain and headache. Although small, this joint has a rather complex structure and function.By placing your middle finger over the TMJ (just inferior and slightly anterior to the external auditory meatus) and slowly opening and closing your mandible, you should feel a nice smooth motion bilaterally. This motion will start as a jaw opening (depression); at the end of the movement ( at the point just prior to fully opening the jaw), you should feel the joint glide anteriorly. Some will feel one side move out of synch with the other; others may feel one or both sides suddenly "snap" anteriorly. A few may feel a "crackle" (crepitus) on one or both sides; still others may feel and/or hear a "pop" as the articular disc releases.
Let's consider some of the underlying anatomical and functional aspects of the TMJ. The TMJ is formed by parts of two bones: the temporal bone and the mandible. More specifically, the condyloid process of the mandibular ramus fits into the mandibular (glenoid) fossa of the zygomatic process of the temporal bone. This mandibular fossa is bounded posteriorly by the retroarticular process and anteriorly by the articular tubercle. There is a well-defined articular disc within the joint cavity and an articular capsule enveloping the joint. (Author's note: For more information, please refer to one of the atlas pictures listed below.) Interestingly, the disc separates the joint cavity into two functionally separate compartments: one inferior and one superior. Another unique feature of this joint is that the articular surfaces are covered by dense fibrous connective tissue instead of hyaline cartilage, as is usual in synovial joints. This type of connective tissue allows for joint remodeling. The disc attaches to bone medially, laterally and posteriorly, but blends with the articular capsule anteriorly. The articular capsule and the lateral ligament further stabilize this joint. Medially, the sphenomandibular ligament assists in TMJ stabilization. Posteriorly, the stylomandibular ligament assists in joint stabilization.
The TMJ is considered a compound joint, because it operates as two separate but related functional units. The articular disc and the mandibular condyle form the first functional unit. These two act together in most hinge-type movements. This is when the jaw is depressed. The condyle and the disc together move (glide) on the articular eminence for full mandibular opening. The jaw may also be protracted (protruding the mandible) or retracted. In addition, there is lateral displacement about the TMJ. The primary muscles producing these mandibular movements are: depression-lateral pterygoids with help from the digastric, mylohyoid and geniohyoid muscles; elevation-masseter, temporalis and medial pterygoids; retraction-posterior temporalis; protraction-lateral pterygoids; and lateral displacement-contralateral lateral pterygoid. Earlier descriptions of a separate "superior pterygoid" muscle acting solely upon the articular disc seem to have been unfounded.1
The innervation of the TMJ is derived from branches of the mandibular division of the trigeminal nerve; specifically, the masseteric and auriculotemporal branches. The blood supply is derived from the superficial temporal and maxillary branches of the external carotid artery. Lymphatic drainage is primarily into the deep cervical nodes.
Next month, I will discuss various TMJ dysfunctions as they relate specifically to the underlying anatomical features. It will then become clear why so many clinicians of various types treat TMJ dysfunction.
Click here for previous articles by Neal Cross, PhD, NCTMB.
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