Introduction to biomechanics


The 7 Perpetuating Factors of Pain

In my San Antonio, Texas based Massage
Therapy and Bodywork practice I'm often askedNERVE COMPRESSIONS and ENTRAPMENTS are types
by clients how it is that I assess clientsof nerve impingement. These are areas of
and approach my work. There are a number ofabnormal pressure on nerves which can cause
methods I use but when it comes topain, numbness and tingling, or muscle
musculoskeletal pain one set of guidelinesweakness. A Nerve Compression occurs when a
are "The 7 Perpetuating Factors of Pain".hard tissue such as a vertebrae or vertebral
These factors were originally presented to medisc directly presses on a nerve. A more
during my training in Neuromuscular Therapycommon occurance is a Nerve Entrapment. Nerve
and Medical Massage and are based on the workEntrapments occur when a soft tissue such as
of Drs. Janet Travell and David Simons (andmuscle, tendon, ligament, or fascia
others). By keeping these factors in mindabnormally press on a nerve. An example of a
during assessments and treatment a Massagenerve compression would be sciatica. Examples
Therapist's potential to help relieve theof a nerve entrapment include Carpal Tunnel
client's pain increases tremendously. TheSyndrome and the lesser known Piriformis
factors  are:Syndrome, but encompass a wide variety of
painful  conditions.
1)  Ischemia
POSTURAL DISTORTIONS are another factor
2)  Trigger  Pointscontributing to musculoskeletal pain.
Distortions such as the head being to far
3)  Nerve  Compression  or  Entrapmentforward, leg length discrepancies, or an
elevated shoulder cause muscular imbalances
4)  Postural  Distortionand  joint  abnormalities which lead to pain.
5)  Biomechanical  DysfunctionBIOMECHANICAL DYSFUNCTIONS include joints
that are either excessively mobile
6)  Stress(hypermobile) or have an abnormally limited
range of motion. These Biomechanical
7)  NutritionDysfunctions cause pain in the joints
themselves and contribute to some of the
Each of these factors plays a part in aother perpetuating factors including postural
person's musculoskeletal pain. Any one ofdistortion,  ischemia,  and  trigger  points.
these factors can be the sole cause of pain,
but usually a person will have more than oneSTRESS may be the most common of all
factor  at  work  -  sometimes  all  of them.perpetuating factors of pain. A person
experiencing physical, mental, emotional or
ISCHEMIA is a local deficiency of bloodspiritual stress produces larger amounts of
supply and the oxygen transported by thestress hormones and usually has a nervous
blood. Ischemia can occur for a variety ofsystem that's in overdrive - fight or flight
reasons including direct injury to tissues,syndrome. Stress leads to pain in so many
abnormally tight or overworked muscles,ways that it's impractical to list them here;
clothing or shoes that are too tight, or evenhowever, stress can cause pretty much all of
off-the-shelf splints for tennis elbow.the  other  perpetuating  factors.
Specialized nerve receptors in muscles report
pain in ischemic areas due to chemicalNUTRITION is one factor often overlooked in
changes  that  occur.the treatment of musculoskeletal pain.
Unfortunately, Massage Therapists are seldom
TRIGGER POINTS are hyperirritable spots in atrained, qualified, or legally able to
muscle associated with a palpable "knot" andprovide nutritional advice. However, most
a taut band of tissue. Trigger Points areMassage Therapists, including myself, do know
painful on compression and can refer pain andhealthcare professionals in their locale to
tenderness to other areas. Trigger Points arehelp with the nutritional side of treating
usually ischemic and often cause an entirepain. These professionals often find that
muscle to be too tight, weak, and more easilythere are nutritional deficiencies just a
fatigued. Trigger Points can be caused byDrs. Travell and Simons did during their
overworking or overstressing muscles, directresearch.
trauma  to  muscles,  or  even  chills.



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