resourcesABOUT MT AUTHOR GUIDELINES CLASSIFIEDS EDITORIAL CALENDAR MEDIA GUIDE MASSAGE MART SCHOOLS & EDUCATION FEEDBACK
New Medical Technologies You Need to Know
We're all familiar with how fast computers become obsolete, as well as the rapid pace of development in the field of cell phone technology. The latest smart phones are far more powerful than desktop computers were only a few years ago.
Immunizations by Colorado DCs: Really?
You probably didn't hear about it, but back on Nov. 21, 2013, the Board of Directors of the Colorado Chiropractic Association (CCA) adopted "immunization authority" for Colorado DCs as its No. 2 legislative goal.
Coding for the Subluxation: ICD-9 vs. ICD-10
When I attended chiropractic school, I was taught that chiropractors approach health care differently than the traditional medical establishment.
Physical Exam 101: The Hands
I am sure you are familiar with the old adage: "When the only tool in your toolbox is a hammer, everything starts to look like a nail."
Medical Qigong for the Heart: Part III
Part 1 and Part II of this series focused on the physical aspect of the Heart and mental emotional aspects of the Heart respectively. Now, I would like to focus on the spiritual aspect of the Heart.
Finders Keepers: The Secret to Relationship-Based Marketing
Becoming a successful practitioner has less to do with what you learned in school, and more to do with your ability to find new patients and keep them!
Peer Points: Always Seeking To Grow
Ellen "Kiki" Geary has spent the last decade honing her craft. As a specialist in integrative holistic care, she went straight from completing her master's degree in acupuncture and chinese herbal medicine from Bastyr University to building a successful and thriving practice in the small community of Anacortes, Washington.
Vaccines and Chiropractic: Evidence-Based Medicine or Medical Dogma?
Right or wrong, the chiropractic profession has historically been against vaccinations. However, a growing trend within the profession is seeking to reverse this position.
The Science of Stretching
In 1986, Rob DeCastella set a course record by running the Boston Marathon in 2:07:51, just 39 seconds off the world record.
A Guide for Talking to Doctors about Acupuncture and Brain Chemistry
Before I begin any discussion of how to talk about the effects of acupuncture on brain chemistry, nervous and endocrine function, it is essential to understand just what physicians most need help with.
By the Numbers: 3 Common Financial Mistakes With Major Consequences
Warren Buffett is on record for sharing the hidden art of becoming wealthy and making it simple enough for anyone to grasp.
Fibromyalgia: Put the Pain in Its Place
While some fibromyalgia patients respond favorably to regular chiropractic care, others experience minimal relief. Unfortunately, many of these patients must rely on pharmacological management to relieve their constant pain.
Building From the Bottom Up
I caught up with my dear friend Honora Wolfe, in her Colorado painting studio where, if she is not praying in Bhutan or doing charitable work in a Nepali free clinic, she spends most of her time now.
Curbing Label Overwhelm
For the average consumer, reading a food package can be overwhelming: natural, organic, non-GMO, gluten free, free range ... you get the picture.
A History Worth Telling
The popularity and the use of acupuncture for the treatment of animals in the United States is at its peak.
Remembering Clarence Gonstead and 50 Years of the Gonstead Clinic
Dr. Clarence Selmer Gonstead (1898-1978) took chiropractic practice from back-alley bone setting to an understandable biomechanical science. His life was dedicated to clinical competency.
Knee Pain From the Kinetic Chain
As practitioners of manual medicine, chiropractors often treat patients suffering from knee pain.
Are You a Bad Chiropractic Patient?
My father was a great DC. In fact, as you might expect, he was the doctor of chiropractic I measured all other doctors against. Sadly, he died at age 61 when I was in my early 30s.
A Chinese Medicine Story: An Interview with Mazin Al-Khafaji
Mazin Al-Khafaji's work has interested me for years. In February 2014, we invited him for the second time to speak at the Southwest Symposium in Austin, Texas.
Why You Should Include the Single-Leg Stance Test in Every Patient Assessment
The single-leg stance (SLS) test, also known as the single-limb stance test, unipedal stance test or one-legged stance / balance test, is often used in the geriatric population to assess static postural and balance control.
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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