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ARTICLES
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Temporomandibular Joint
Dysfunction (TMJ)
Overview, Assessment
& Treatment
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Clay Cox, Ph.D.
Board Certified in Diagnosis and
Treatment of Soft Tissue
Injuries
Resulting from Motor Vehicle
Accidents:
American Academy of Craniofacial
Pain
Fellow Clinical Practitioner;
American Academy of Pain Management
American Back Society Fellow
Certified Advanced Rolfer™
©2001
PREFACE
I practice Manual Medicine. My
hands are the smartest part of
me. My position is that those
whom I have trained with and
been trained by are physicians.
Webster1 defines a
physician as “any person or
thing that heals, relieves, or
comforts” and defines “heal” as
“to make sound, well or healthy
again; restore to health; to
remedy or get rid of grief,
troubles, etc.” After I examine
my clients and their unique sets
of conditions, I treat through
education, words of guidance,
numerous acts of God and a
little manipulation. The
purpose of this paper is to
address a specific aspect of the
latter.
I am presenting this paper with
a tacit understanding that the
reader is a trained professional
in the field of health care.
That is, you have a working
knowledge of gross anatomy, are
trained to identify and assess
deviations in structure and
function, and possess the basic
manipulation skills required to
address issues and restore
function in a wide range of
cases.
INTRODUCTION
For the purposes of this paper I
will use the phrase
“Temporomandibular Pain Disorder
Syndrome” (TMPDS) for what has
commonly been called
“Temporomandibular Joint (TMJ)
Syndrome.”
TMPDS is defined by a triad of
primary symptoms:
-
Pain and
tenderness of the muscles of
mastication.
-
Joint sounds
with jaw opening.
-
Limited
mandibular movement.
Secondary characteristics
include referred pain to other
areas of the head causing
headaches, and retro-orbital,
bitemporal, and occipital pain.
My intention with this paper is
to present an overview of TMPDS,
offer instruction on how to
identify it in your clients, and
offer several treatment
approaches and techniques that I
have found useful in my
practice. I also will present
the case for taking a detailed
case history and performing an
adequate physical examination.
An illustrated appendix is
included that will help you
understand more clearly what I
am attempting to put down in
words.
There are a number of
considerations that must be
addressed before attempting to
render aid to a suffering pain
client of any type. Is the work
that you are considering doing
going to be done within the
context of a traditional Rolfing
series or will it be stand alone
work? Will you be working with
this client as a solo
practitioner or as part of a
treatment team? Is the client’s
complaint based on trauma or is
it cryptogenic? Another serious
consideration is whether this
person is a pre- or a
post-surgical case. I will
address these issues briefly in
this paper, but I believe that
each case will present other
aspects of the individual that
must be closely examined.
The language I use is from the
allopathic perspective. Most of
the TMPDS clients I see are
referrals from allopaths or have
extensive history in the
allopathic system. The
allopathic language format is
the one the client is most
familiar with. With improved
communication comes efficacy in
treatment, and I believe that a
common language is the first
step towards better
communication.
THE TMJ CLIENT
We have all seen
them in our office. As many as
four out of five clients are
women. They are usually young:
15-45 years of age2.
Their complaints are common,
they have pain in the TMJ region
that is exacerbated by movement
of most any type, from talking
to eating. Headaches are also
very common as is “clicking,”
and in some cases the jaw
actually locks. Many complain
of waking up with sore or tired
jaws.
They describe their pain as on
one or both sides of their face
around the ear, in the cheek, or
temple. Generally characterized
as a dull, continuous, poorly
localized ache of moderated
intensity with a boring or
gnawing quality, it may vary in
the degree of discomfort through
the course of the day.
They have tried over the counter
medications, dental
equilibration and plastic
devices to go inside the mouth
when they sleep. Many,
especially in the last 20 years,
have tried multiple surgeries.
Most of the clients that I see
have found that these remedies
have been to little or no
avail.
I believe that if more work was
done in screening women,
especially young women, for this
condition we could prevent a
good percentage of surgeries.
This is important work. Once
you are a failed TMJ surgical
patient, very, very few
allopaths will consider treating
you other than to manage your
morphine prescriptions.
It is not uncommon for the
cryptogenic TMJ client to suffer
from deviations from their ideal
posture. One of the most common
contributors to TMPDS is the
forward head syndrome and given
the dynamics of the human
structure, usually the
physician’s examination will
reveal distortions throughout
the client’s structure.
In general, remember that
craniofacial pain of a
musculoskeletal origin may arise
from the muscles of mastication,
the TMJ or directly/indirectly
from the neck bones/musculature,
but the entire body must be
assessed for contributory
factors.
CLIENT HISTORY
Identifying TMPDS is usually
achieved based on the client’s
history and clinical findings.
In general, extensive
radiographic evaluation is not
necessary. Yawning, chewing or
moving the mandible will often
result in stabbing or severe
pain, precipitating cramping or
locking of the jaw. Long-term
pain may also include cyclical
periods of remission. Be aware
also that chronic TMPDS clients
will often present psychological
characteristics that include
anxiety, stress, depression,
anger and frustration. The
majority of the idiopathic based
clients are women in the
childbearing years of age.
Taking a detailed case history
and performing a competent
physical examination are
critical to the successful
treatment of any condition by
any physician. My suggestion is
to collect several case history
forms from other physicians and
find what works best for your
particular practice.
Specifically, you will need to
know how and when this complaint
was first noticed. What were
the events surrounding inception
of the complaint? Is this
complaint idiopathic or trauma
based?
What type of trauma precipitated
the onset of the complaint? Was
it a direct blow to the chin, or
was it a lateral blow, such as
the head hitting the side window
in a side impact motor vehicle
collision? Knowing the details
of the initial insult that the
client suffered will better help
you understand how the
biomechanics of the region you
are working with have changed
from their prior given structure
and arrangement. With this
information you will be better
able to bridge/integrate what
you understand of body mechanics
with the altered anatomy before
you. Frankel3 found
that 37.5% of whiplash patients
had symptoms of TMJ trauma. Did
they have time to react before
the event happened? If so, the
musculature that was contracted
at the time of impact will have
to be addressed before the
damaged joint and immediate
tissue can be manipulated4.
Is this client presurgical? If
there has been no surgical
intervention, then you have the
advantage of having a clean
anatomical theater in which to
work. Your anatomical atlas will
be a valid map for the
presentation. If the client has
a TMJ surgical history you need
to be aware of the types of
invasive procedures that TMDPS
patient’s commonly undergo;
whether they have had a
discectomy, a tissue implant
and/or hard appliance
implantation. Implant devices
will be discussed later in this
article.
If you understand the process
and the possibilities, you and
your client will be much
happier. Taking a competent case
history will bring about the
increased possibility of a
significant decrease in your
client’s suffering.
PHYSICAL EXAMINATION
ANATOMY
Now what are we looking at here
when we examine the TMJ? One of
five joints in the body that
functions with an intra
articular meniscus, it is
considered by many to be one of
the most overused and abused
joints in the entire body.
Therefore it follows that it is
subject to the same type of
pathological changes that any
other joint goes through when
insulted. It also follows that
this joint can be treated just
as you would treat any other
joint, because like all other
joints it is activated through
direct muscular action and
responds to manipulative therapy5.
Basically, the TMJ is a
universal joint operating about
an incongruous joint structure
with a shifting axis of
rotation. The surface of the
condyle is ovoid and the fossa
surface is sellar. Movement
occurs as a combination gliding
motion rather than an all-arch
rotation. Opening the
jaw is really a two-stage event:
first the mandible rotates with
the radius at the joint itself
for about 25 degrees or so, then
the condyle slides/glides
anteriorly on the glenoid fossa
cartilage for the rest of the
opening action5.
The disc of the TMJ is
fibrocartilage in structure and
is held and elongated by the
pterygoid muscle. The disc
requires definitions in
structure and function since it
needs to remain soft and pliable
and withstand physiological
deformation every time the jaw
opens or closes.
FUNCTION
Your examination will reveal the
functional status of the
mandible. First check the range
of motion of the mandible. The
client’s first three fingers
will serve as a general rule of
thumb for this assessment. You
will often find a limited mouth
opening of less than three
fingers.
Next, check the line of tracking
of the mandible in motion. Does
it deflect to one side? This
will generally be the result of
muscle splinting or spasm. Does
it deviate in the middle of its
range and then correct back to
midline? This is often the
result of a meniscal
displacement where there is a
failure of the condylar head to
capture the meniscus
appropriately during opening of
the jaw. This can be because of
a damaged or distorted disc.
Check for lateral deviation by
asking the client to slightly
open their jaw and for them to
move the chin right and left.
This will address issues related
to contractile tissue. Next
move the jaw in the same
directions to assess the
ligamenteous, osseous and
cartilage structures.
Audible soft clicks and pops are
not considered significant, but
hard clicking consistently
occurring late in opening
coupled with periodic closed
locking may indicate pathologic
changes in the meniscus or joint7.
Notice any differences in the
outward appearance of the joint
itself. Look for swelling,
heat, redness, any significant
alternation from what you would
consider normal in your daily
practice. Click your thumb and
middle fingernail close to the
external meatus for a gross
hearing test. Palpate the
muscles of mastication. Note
the bony landmarks of affected
structures. This would, at the
least, include the
atlantooccipital joint, the
atlantoaxial joint and the
cervicothoracic joint. Note
also the relationship of the
greater angle of the mandible
and its relationship to the
styloid process and the
transverse processes of the
atlas.
You will be more successful in
your efforts if you complete
your examination with a
structural and functional
assessment of the client in toto
and see how the TMJ region and
its issues fit in with the whole
person as they present before
you.
At this point, you have
completed a detailed case
history as well as a thorough
physical examination.
PALPATION AND TREATMENT
APPROACH
In my practice of what I call
manual medicine, I have learned
that on one level I assess by
palpating. On another level,
while palpating, I treat. The
success of my treatment is
measured by direct feedback,
observation and further
palpation. If necessary, I
either modify my strategy to
correct or further refine my
line of work, or lay out a new
line.
I understand that by putting
this procedure into words and
attempting to pass it on as
teaching is akin to trying to
teach someone to swim or ride a
bike by having them read an
article on it. However, if you
will persist and are patient you
can pick up most of these ideas
and put them into your practice
very quickly.
SPECIFICS
My theory is that in the
cryptogenic cases of TMPDS the
client’s complaints are really
about a symptom. Most failures
in allopathic treatment of this
disorder come from focusing on
joint dysfunction as the
problem. This approach rarely
brings about a permanent
resolution to the issue for the
client.
It is important to understand
the tissue’s response to
injury. Generally,
intracapuslar inflammation
stimulates the sensory
innervation of the capsule.
This is because this is the same
nerve as the motor innervation
to the muscles that bring about
movement in the joint itself.
As a result, the musculature
goes into spasm, which in effect
splints the joint8.
In turn, pain and trismus is
produced which are cardinal
signs of TMPDS.
Usually the problem stems from
one or two issues: A disruption
of the integrity of the
atlantooccipital joint (AOJ)
and/or an imbalance in the tone
of the pterygoids. The
AOJ disruption, more
often than not, involves a
rotational displacement of the
occiput on the atlas or a
rotation of the atlas itself.
When this occurs very often the
anterior transverse process will
be much closer to the posterior
aspect of the ramus and the
angle of the mandible. When
this occurs pain will be
palpated in this region. It
appears that when these two
osseous bodies get close to one
another, connecting tissue
webbing forms and seems to lock
these bodies into their intimate
positioning. Any time the body
suffers pain, it attempts to
lock down the area and keep it
from moving/hurting any more
than it already is.
The atlas and occiput are
anatomically coupled and
designed to rotate on the axis.
This functional unit becomes
bound onto the neck of the
mandible, but only on one
side. Binding of a rotational
component (the transverse
process of the atlas) to a
component that swings in an arc
and translates anteriorly/posteriorly
(the mandible) results in a
torquing of the mandible when it
moves in any direction. What
you find in palpation, you will
not find drawn by Netter. It
will most often feel like a
tight band or a stringy mass of
connective tissue between and
attaching to the transverse
process of the atlas and the
angle of the mandible.
Sometimes it will appear to be
a thickening of the platysma;
don’t be misled. It is on the
next layer down and has
horizontality to its fibers.
Acknowledge and BE VERY CAREFUL
OF THE STYLOID PROCESS of the
temporal bone. Do not confuse
this with the transverse process
of the atlas. If you do, you
could wind up with a nasty case
of Bell’s Palsy as well as a TMJ
problem on your table. Your
goal here is to free the
mandible from the spine, nothing
short.
To create the appropriate
relationship between the atlas
and the occiput, release the
fascial adhesions in the
atlantooccipital and
atlantomandibular proximities.
Your hallmarks will be an
occiput that moves independently
of the atlas and one that is in
the appropriate anatomical
relationship with the atlas.
Create space and movement
according to the joint’s
design. Utilize myofascial
release techniques as well as
joint mobilization. One
procedure will not achieve your
goal.
To attain this goal you will
have to appreciate the
subocciptial musculature. This
includes the trapezius, spleni,
semispinalis capitis and
cervicis as well as the
multifidi and rotatores. Six
pairs of muscles that must be
addressed for overall tone,
right / left balance and
length. Traditional myofascial
release techniques are usually
sufficient to bring about the
appropriate relationships and
facilitate the appropriate
positioning of the atlas in
relation to the occiput. Assess
carefully and if you have not
attained your goal, refer the
client to another team member
and get the appropriate osseous
work.
Anterior to the subocciptital
musculature is the floor of the
mouth. The hyoid group must be
addressed for anterior/posterior
balance with the suboccipitals.
This in not just a metaphorical
relationship, it is literal.
Palpate and understand this
relationship. See how the
anterior/posterior articulation
of the atlantooccipital joint is
balanced with these two sets of
muscles once the extrinsics have
been balanced.
Remember that earlier I said the
problem of TMJ pain stemmed from
the dysfunction of the AOJ
and/or an imbalance of tone of
the pterygoids. To get to the
pterygoids we must first address
the musculature of mastication.
In many cases the temporalis,
masseter and buccinator are
secondary or compensatory
muscles to the pterygoids.
After a traditional approach to
releasing these muscles is
completed, look at the tone of
the pterygoids lateral and
medial. The medial pterygoid is
addressed first from an external
approach looking first from the
angle of the mandible posterior
and superior. Look for balance
in tone right / left. If
absent, create it. I use my
ring finger; it is more
sensitive and less powerful.
Ask for the jaw to open and
close gently and slightly and
release the contractures in the
pterygoid as well as all of the
affected hyoids. Ask for
anterior/posterior translation
of the mandible and repeat
process until balance is
attained.
The intraoral medial pterygoid
work follows the muscle from the
angle of the ramus to the belly
of the muscle. This is
accomplished by placing the pad
of your gloved index finger on
the same side medial aspect of
the client’s mandible and
working from the greater angle
medial up the belly of the
pterygoid toward the palatine.
Next, use same side forefinger,
with jaw opened moderately, and
place the distal phalanx
posterior to the last molars and
ask the client to close their
jaw and squeeze your finger out
of that space between their
gums. This will cause more
discomfort to the client than
you will experience from being
clamped down upon, and you will
facilitate the work by sliding
your finger out, but not too
quickly. Encourage slow and
gentle complete closure. The
work needs to be done.
What is “the work?” Your
finger will serve as a fulcrum
and the TMJ will be leveraged
open with very little movement.
This action opens the capsular
joint space in the most
effective manner that I have
found to date. Clients report
that there is more space in the
joint itself and a significant
reduction in perceived pain. Do
this work on yourself on both
sides several times to
practice. You will learn quite
a bit about this technique that
you won’t by working on others.
The masseter, temporalis and
buccinator groups have a
balanced action in that they are
stretched and flexed as they go
through their normal TMJ range
of motion. The lateral
pterygoids, especially the upper
fibers, do not benefit from this
action. The upper fibers
contract to translate the disc
back and forth in conjunction
with pressure from the
mandibular condyle. The disc
changes shape to serve function
with assistance from the
pterygoid, then in the closing
phase of the TMJ cycle it
releases its tension. Posterior
to the disc is a highly
innervated fibrovascular zone
full of blood vessels,
lymphatics and dense connective
tissue fibers. The disc has an
elastic attachment that is
affixed to the temporal bone and
a non-elastic attachment that
affixes to the superior and
posterior aspect of the
mandibular rami inferior to the
condyle, according to Gorman9.
The lateral pterygoid has a
limited range of motion.
External manipulation is
mandatory. The practitioner
will find many TMPSD clients
with masseters that are painful
to palpate, but I will venture
to say that they will find ALL
lateral pterygoids painful to
palpate10. Release
this tension and balance the
tone and you will reduce the
client’s subjective complaint.
You will not get these results
by manipulation of the masseter,
temporalis and buccinator alone.
Manipulation of aspects of the
lateral pterygoid can be
achieved from both extra and
intraoral approaches. From
outside, open the jaw wide and
you will find the posterior
aspects medial to the masseter.
With your fingertip, the
intention of work is directly
medial. This is tender
material, approach
compassionately. Here
you are working perpendicular to
the plane of the surface of the
molars with the pad of your
finger on the mandibular notch,
the dorsum of the digit under
the posterior maxillary arch and
the tip of your finger on the
surface of the lateral pterygoid.
From inside the mouth, open the
jaw only slightly to allow work
on the inferior division of this
muscle. It has a broad origin,
as any strong muscle does, and a
focused insertion. The only
aspect that you can touch
effectively is the lower aspect
of the inferior division coming
from the lateral pterygoid
lamina of the sphenoid. Run
your contralateral index finger
superior and posterior until you
can go no further; your index
finger will be on the muscle in
question, posterior to the last
molar. Wisdom teeth make this
manipulation more difficult,
needless to say. Once touching
the muscle your intention will
be medial11,12.
Compassion, but get the work
done: re-establish balance and
function.
Understand that the pterygoids
are the muscles of TMDSD. Both
pterygoids originate from the
sphenoid. When hypertonicity
exists bilaterally the tendency
is for the sphenoid to rotate on
its horizontal axis. If one
side is hypo and the other
hypertoned, then there is a
torque on the mandible and the
sphenoid as well. There are
many negative and far reaching
consequences to any displacement
of the sphenoid beyond the scope
of this paper, but take note:
this is not a good thing. Take
a moment here and survey the
tone of the pterygoids and psoas.
You will be surprised, but that
is another paper.
Travell shows the posterior
attachment of the superior
division of the lateral
pterygoid attaching to
the capsular ligament and the
articular disc as well as the
upper one-third of the front of
the neck of the condyle11.
This component of the pterygoids
is directly responsible for the
placement of the disc in the TMJ.
If you study the dynamics of
this disc and the nature of its
task you will be amazed that it
lasts as long as it does in the
average structure. Joe Breck,
my illustrious colleague of the
last decade, pointed out the
fact that this disc must be made
of very unusual material to last
as long as it does while
undergoing the radical
structural and physiological
changes that occur every time
the jaw is opened.
CARTILAGE
The disc and the articular
cartilage play a predominant
role in normal joint motion and
also in TMDSD. Glenoid fossa
cartilage and the material
covering the condyle are both
fibrocartilagenous. This
composite is different from the
condylar surfaces and menisci of
other synovial joints in the
body. Physiologically, these
tissues deform in all directions
of TMJ movement. Most
significant deformation is seen
in flexion, extension,
protrusion, retraction, lateral
motion and circumduction13.
In the knee joint
the meniscus moves with the
femur in rotation and with the
tibia in flexion-extension14.
The TMJ disc actually changes
its shape during all movement of
the jaw and then returns to its
original shape at the end of the
movement. The posterior aspect
of the disc is directly affixed
to the mandibular condyle. With
this understanding, the
physician can see how the joint
“locks” only when the disc
doesn’t go through the
deformation and reformation
phases that define its
function. By definition, the
disc must change shape and
return to the original state to
be optimally functional.
By unloading the TMJ through an
ordered process such as the
Rolfing Series, the surrounding
structure is balanced in tone.
When this is happens the
components of the joint move
towards order. This encourages
the cartilage to reshape and
function closer to its ideal
state. This is especially true
of the TMJ disc.
CLICKING AND DISC MOVEMENT
Is there clicking? Without
locking? Is there lateral
deviation upon opening/closing
of the jaw? From this you can
easily ascertain the status of
the disc. Is it being captured
properly? Has its structure
been compromised and lost
function? These issues have
their origins in disc damage.
Assessing major disc damage is
not difficult for trained eyes.
If you have gotten this far in
your reading, more than likely,
you have trained eyes.
Once it has been ascertained
that the disc is damaged, as
usual, create space. If you can
decompress the joint area, you
have a chance at training the
mandible by tracking it manually
through its range of motion. I
stand my clients with their
heads up against the wall and
stand directly in front of
them. With eight fingertips
pointing medially with moderate
force on the masseters and
thumbs on the chin, I call for
motion. The fingers bring
balance to the superficial and
some of the deeper jaw muscles
while the thumbs, with help from
the fingers, keep the jaw
tracking in a more ideal
anatomical plane. This work is
usually done at the end of the
treatment. It helps “ground”
them as well as significantly
improve their mandibular
tracking. Improvement will be
noticed by all that have not
fallen asleep to Enya or Prince
Valium.
Given that the soft tissue holds
bones in any particular
arrangement, what I have found
is that the contralateral
lateral pterygoid is most often
at the base of etiology of
common TMDSD. That is to say,
if the left TMJ is the affected
joint then look for the right
pterygoid to be more contracted
than the left.
CONSIDERATIONS
Idiopathic or cryptogenic-based
TMPDS more often than not will
necessitate a longer time in
treatment. This is due to the
fact that over time clients
unconsciously compensate for
pain and dysfunction and the
trauma in the primary tissues
becomes more deep seated.
Results are often found in the
form of scar tissue, adhesions,
lesions, fixations and
anatomical distortions. Trauma
based issues, depending on the
type and severity, can often
times be resolved with a much
shorter time frame especially
when promptly addressed.
Are you seeing this client in
the context of a traditional
series or doing only what I call
manual medicine? Are you
working alone or are you part of
a team? I strongly suggest
teamwork. The chronic pain
client, research has shown
clearly, will only respond to a
multi-disciplinary team approach
when a long-term solution is
being sought. Psychologists,
sex therapists, chiropractors,
osteopaths, dentists,
oromaxiallaryfacial surgeons,
and general practitioners should
be strongly considered when
dealing with chronic TMPDS
clients. Without a team, you
are only putting band-aids on a
bad situation.
DIFFERENTIAL DIAGNOSIS OF
TEMPOROMANDIBULAR JOINT PAIN
Generally, there are two types
of problems that define TMJ
arthralgia: intracapsular and
extracapsular. Intracapsular
arthralgia issues include fixed
or locked jaw, degenerative
joint changes, subluxation
and/or a displaced disc creating
clicking. Extracapsular issues
include dysfunction of both
pterygoids, masseters, and
temporalis musculature.
There are two basic types of
joint or intracapsular type
injuries: those that permanently
deform the disc and essentially
render it dysfunctional, and
those injuries that only
temporarily alter shape and/or
function of this disc.
When there have been repeated
disc dislocations, the cartilage
of the glenoid fossa as well as
the mandibular condyle wind up
being damaged to the point of
being classified as degenerative
arthritis. This often leads to
extracapsular arthralgia where
the soft tissue reacts to the
pain in the joint and the client
often presents with multiple
myofascial contracture patterns
in the muscles of mastication
shortly after the initial insult15.
BRIEF SUMMARY OF CURRENT TMJ
IMPLANT DEVICES
Since 1934 various materials
have been used to replace failed
components of the TMJ.
Autogenous graft surgeries
utilizing the patient’s own
tissues such as ear cartilage
were performed as late as the
1990’s16. Ear
cartilage has some of the
consistency of the disc if you
don’t look too closely. The
trouble with it was that it did
not have the physiologic
property of being able to change
shape and form, and then return
to its original state over and
over again, without
disintegrating. Then they
started pulling down strands of
the tendons of the temporalis to
use as disc material. The
temporalis tendons at least had
a blood supply to them and had a
remote chance of living until
the patient’s first bowl of
hospital gruel. It is difficult
for the writer to understand how
the FDA approved these two
procedures even on an
experimental basis.
The hard appliances became
available soon after these
repeated failures started
rolling in. The “Morgan” and
the “Christensen” devices are
the most common types used in
the last two decades. Due to a
combination of politics, failed
appliance history (81% in the
case of the Christensen device16),
litigation, and poor IMHO
medical case management, both of
these devices have been removed
from the AMA-approved list of
devices. I do not believe that
you will see many other types of
devices in your practice for
some time to come.
The only device that is approved
for use at the time of this
writing is the ANSPACH device.
This device utilizes a titanium
mesh fossa component that is
designed to encourage bone
growth around and through it.
The condylar component is made
of polyethelyne. Very few
medical doctors have been
trained and certified to perform
this implantation.
The recipients of these fossa
devices will present a surgical
site anterior to the articular
capsule and inferior to the
maxillary arch. An incision is
made along the greater angle of
mandible, the patient’s condyle
is removed and the device is
screwed in place onto the upper
portion of the ramus.
Obviously the musculature of
mastication will be disturbed as
a result of these procedures.
The temporal and mandibular
branches of the trigeminal nerve
will be disturbed as well. One
of my clients presents as
affected by Bell’s Palsy due to
damage sustained to the
trigeminal nerve during a fossa
device implantation. In the
case of the condylar implant it
is necessary to remove the
patient’s natural condyle and
fix the appliance with multiple
screws. Christensen’s are
typically affixed with short
screws that go only through the
outer lamina. The Morgans used
the longer ones that went
through both laminae somehow.
Be careful on inner mouth work.
You can imagine what the tips of
these little sharp screws feel
like when they are drilled into
the lateral aspect of the
pterygoid attachments on the
rami of the mandible.
Early screws were stainless
steel and patients complained a
lot with changes in the
weather. They also had a
tendency to back out
frequently. Because of the
frequency of the screws backing
out and the resulting screw
heads no longer sitting flush
with the condylar appliance,
they continually tear into the
masseter. In some cases these
screws back completely out of
the lamina and create a total
implant failure. Later
procedures utilized titanium
screws with fewer problems of
this type.
According to The TMJ
Association, Ldt.16
a company called VITEK bought a
substance called “Proplast”
from Dow Corning in the 70’s and
80’s in an attempt to avoid some
of the previous failures. VITEK
marketed this material to be
used to form the fossa component
in TMJ surgeries figuring that
it could conform to the natural
condylar surface that was
different with each patient.
Like Bridgestone/Firestone/Ford
of late, evidence and history of
Proplast’s failures in Canada
when used to repair other joints
was suppressed, probably for
business reasons. It was
certainly not in the best
interest of patients. The
substance was, as a result,
successfully marketed in the
United States as the most
promising procedure in TMJ
repair at that time.
In short, Proplast implantations
failed in joint repair here as
it had in Canada. Failure in
most patients, including two of
mine, involved primarily the
splintering of the Proplast
material. The natural fossa
region of the skull is very
thin. In both of my client’s
cases splinters of Proplast
material were driven into the
cranial cavity and in one case
into the brain itself, as well
as dropping down into the
musculature of mastication.
Dow Corning essentially played
dumb as to what VITEK was doing
with their product and they both
filed for bankruptcy when one of
my clients took them to court.
Not all patients who received
Proplast implants had them
removed. You need to know the
history of your client. If your
client was a recipient of
Proplast and it is still in
place, you need to operate with
caution in the TMJ region as
well as in the muscles of
mastication. There may be
foreign body splinters in these
regions. The myofascial
contracture pattern in these
patients may be secondary to
Proplast splintering.
One of my clients, after ten or
more surgical failures, wound up
having a five-inch section of
her fifth rib incised on both
sides. These bones were
attached to the rami,
bilaterally, with the
sternocostal aspect being used
as the condylar component in a
titanium fossa. At 30+ years of
age no one expected the ribs to
begin growing again, but they
did. Since this procedure in
1987, the ribs were removed from
the mandible and replaced with
total “Christiansen” devices.
She has completed three
residential treatment stays,
works full time as a local
business owner dealing with the
public, takes 12-16 Vicodin
daily and drives to work.
CONCLUSION
I hope that I have presented the
readers with an overview of the
issues and problems related to a
very complicated and painful
syndrome. I also hope that I
have given you some basic tools
to add to your repertoire in the
treatment of craniomandibular
pain conditions. I have also
addressed the failures of some
of the folks working within the
allopathic system.
I have not addressed
re-balancing the involved
musculature through specific
exercises, dietary changes,
postural corrections, client
education, or lifestyle changes.
People with TMPDS are
chronic pain suffers. They need
a good Rolfing Series as all of
their systems are strongly
affected. A team approach is
the only intelligent way to
provide these folks with any
significant, long-term relief.
Establish a network that
includes dentists, oral surgeons
that specialize in TMJ
reconstruction, biofeedback
practitioners, psychologists,
and the whole host of physicians
out there who know how and want
to help people who have suffered
for a long time. A good
resource to start with if you
are interested in working with
these folks is: The TMJ
Association, P.O. Box 26770,
Milwaukee, WI 53226, Fax:
414-259-8112, E-Mail:
info@tmj.org.
I have also not addressed what
the bulk of my real work has
been in the field of helping
others: prevention. I believe
that whatever your modality or
specialty is in facilitating
improved health, you will find
that helping people create
competent structure, better
balance and improved function
will be the biomechanical
hallmarks by which you can
measure your success. We all
have a responsibility to make
sure that we do our best to
prevent TMPDS. We will do it by
assisting others in their
efforts to bring order to what I
have heard Dr. Rolf17
called “randomness.”
APPENDIX
Figure 1:
Schematic of Typical Total TMJ
Implant
Figure 2:
Total “Christensen” Device
Implant: Fossa and Condylar
Components
Right Lateral View
Figure 3:
Total “Christensen” Device
Implant: Fossa and Condylar
Components
Anterior View
Figure 4:
Total “Morgan” Device (Box Type)
Implant: Fossa and Condylar
Components
Anterior View
Figure 5:
Total “Morgan” Device (Box Type)
Implant: Fossa and Condylar
Components
Left Lateral View
Figure 6:
Bilateral Total “Christensen”
Device Implant: Fossa and
Condylar Components
Anterior View
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Rolf, I.P.
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