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POSITIONAL RELEASE:Strain-Counterstrain
Theresa A. Schmidt, DPT,MS,OCS,LMT,CEAS
www.educise.com
Sponsored by CROSS COUNTRY EDUCATIONCopyright c 2009 Theresa A. Schmidt
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Disclosure To comply with professional
boards/associations standards, I declare that I do not have any financial relationship in any amount occurring within the last 12 months
with a commercial interest whose products or services are discussed in my presentation.
IF YOU NEED SPECIAL ACCOMODATIONS TO PARTICIPATE, LET ME KNOW!
Theresa A. Schmidt
Integrated Neuromuscular Re-education
Cross Country Education, Inc.
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INTRODUCTION:
NEUROPHYSIOLOGY
We treat muscle problems:
stiffness, weakness, pain, etc.
MUSCLE LENGTH influenced by:• Our security system:
•MONOSYNAPTIC REFLEXES
•PROPRIOCEPTIVE REFLEXES
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MUSCLE SPINDLE
Extrafusal & Intrafusal Fibers Extrafusal: Alpha motorneuron
monitors length of muscle
Intrafusal: Gamma mn monitors length and rate of change in length
Spindle bias is the present sensitivityto changes in length and rate of change
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Golgi Tendon Organ
GTOs monitor tone, when stretched, GTOs fire 1B, results: inhibits alpha motorneuron
Inhibits contraction
If sensitized, may weaken muscle
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ABNORMAL FACILITATION
Stress overexcites nerves, lowers threshold for stimulation, facilitates afferents, overloads adjacent segments: FACILITATED REFLEXES
Local: at the myofascial level: TPs, taut bands, tension
Segmental: at spinal nerve level, spasm, edema, ANS dysfunction in several spinal levels
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TRIGGER POINTS: TPs
Dr. Janet Travell: “hyperirritable foci lying within taut bands of muscle which are painful on compression and which refer pain or other symptoms at a distal site”
(Chaitow, p.59)
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TRIGGER POINTS: EMGs
Persistent contraction
Calcium buildup
Oxygen deficit, can’t pump out Ca++
Selective shortening of sarcomeres
Must clear TPs to relax muscle(Chaitow/Headley)
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POSITIONAL RELEASE OR
STRAIN/COUNTERSTRAIN:
Technique using tender points
as diagnostic indicators of joint
dysfunction
and position of comfort to
release abnormal muscle
tension and pain
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INDIRECT RELEASE
Move in the direction of ease
“Passive treatment”
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THEORY OF PRT
• Dr. Lawrence Jones, DO: Correction of Somatic Dysfunction
• EMG studies by Howell et al showed changes in EMG after use of strain/counterstrain
• (J. Amer. Osteopathic Assn.)
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SOMATIC DYSFUNCTION
–Altered tissue tone
– Limited joint play
– Loss of ROM
–Muscle Weakness
–Postural distortion
–Adhesive fibrogenesis
– Inflammation(Chaitow)
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NEUROMUSCULAR REFLEXESAberrant Firing
–Local proprioceptors
–Monosynaptic reflexes
–Facilitated segment indicated by TPs
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PALPATE TRIGGER POINTS
People jump, twitch, or cry out in pain
TPs are diagnostic indicators of joint dysfunction
Faulty biomechanics
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PRT TREATMENT
POC – position of comfort
– Reduction of tenderness
– Reduction of tone
– Palpable softening of muscle
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PRT THEORY
Abnormal firing of
proprioceptors
Elevated spindle sensitivity
based on position of relative
stretch, load and velocity
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COUNTER STRAIN:
JONES DEFINITION:
Mild strain (overstretching) applied in a direction opposite to that false and continuing message of strain from which the body is suffering: SHORTENING!
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STRAIN/COUNTERSTRAIN
JONES’ RULES
Pain is position oriented
Joint dysfunction is due to abrupt reaction to strain
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POC is held still for
90 seconds
the rate of return to the
neutral position must be
slow for success
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Joint dysfunction behaves
as if it is constantly
strained:
muscle spindle is the culprit
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Dr. Jones said:
Position the tender point muscle in its maximally shortened
position:
Dr. Schmidt says: this is NOT necessary in practice
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OUTCOMES OF PRT:
Decreased
tissue tension
Decreased pain
Increased
strength
(Wong, 2004)
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PRECAUTION WITH PRT
As you shorten the
TP muscle, you
stretch the
antagonist, may
create delayed
onset muscle
soreness, let clients
know to use ice!
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PRT - INDICATIONS
Muscle guarding
Acute injury
Joint hyper/hypomobility
Fascial tension
Painful tender/trigger points
Structural dysfunction
ADL restoration
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CONTRAINDICATIONS TO PRT
Infection
Nonunited fracture
Open wound
Hematoma
Healing Sutures
Hypersensitivity precautions
When motion is contraindicated
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EVALUATION OF TP
Perform a full exam
Document TP location,
pain scale
Prioritize per severity, treat
worst first
PRT is part of the Plan of
treatment, may relax
muscle to allow for ROM
or contraction with ease
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UPPER TRAPEZIUSExtend/ sidebend neck to affected side,
rotate contralaterally, & elevate scapula
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HIP FLEXORS
Flex hip over 90, may add ext.
rotation for psoas, sit or lie
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SHOULDER: SUBSCAPULARIS
Extend, int. rotate, retractworks better in sitting or sidelying
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WRIST / FINGER EXTENSORS
Extend fingers/wrist, supinate
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CLINICAL CASE STUDY
Identify a TP on your partner
Measure pain scale, check tone
Determine a position of comfort
and release the TP
Re-evaluate!
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EVIDENCE FOR PRT1. Wong CK, Schauer CS. Reliability,
validity, and effectiveness of strain
counterstrain techniques. J Manual
Manipulative Ther 2004;12:107-112.
2. Wong KW, Schauer-Alvarez, C. Effect of
strain counterstrain on pain and strength in
hip musculature. J Manual Manipulative
Ther 2004;12:215-223.
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MORE PRT RESEARCH3. Collins CK. Physical therapy management of complex regional pain
syndrome I in a 14-year-old patient using strain counterstrain: a case
report. J Manual Manipulative Ther 2007;15:25-41.
4. Howell JN, Cabell KS, Chila AG, Eland DC. Stretch reflex and Hoffman
reflex responses to osteopathic manipulative treatment in subjects with
Achilles tendonitis. J Am Osteopath Asso 2006;106:537-545.
5. Wynne MM, Burns JM, Eland DC, Conatser RR, Howell JN. Effect of
counterstrain on stretch reflexes, Hoffman reflexes, and clinical outcomes
in subjects with plantar fasciitis. J Am Osteopath Assoc 2006;106:547-
556.
6. Lewis CL, Flynn TW. The use of strain counterstrain in the treatment of
patients with low back pain. J Manual Manipulative Ther 2001;9:92-98.
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