Myofascial Pain - ihs.gov · PDF file• Simple or complex ... • Posture/biomechanics...
Transcript of Myofascial Pain - ihs.gov · PDF file• Simple or complex ... • Posture/biomechanics...
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Myofascial PainBen Daitz, MD
Professor, UNMSOM
Attending physician, UNM Pain Consultation & Treatment Center
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Project ECHO®… promotes care in underserved areas
The mission of Project ECHO (Extension for Community Healthcare Outcomes) has been to develop the capacity to safely and effectively treat chronic, common, and complex diseases in rural and underserved areas, and to monitor the outcomes of this treatment.Project ECHO is funded in part by a grant from the Robert Wood Johnson Foundation and has received support for the New Mexico Legislature, the University of New Mexico, the New Mexico Department of Public Health, and Agency for Healthcare Research and Quality.
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Nothing to declare
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Objectives:
By the end of this presentation, participants will be able to:
1. Describe what myofascial pain(MFP) is all about.2. Explain how to examine a patient with MFP.3. Identify how to treat MFP.
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Myofascial Pain
1. 75-90% of musculoskeletal pain2. A top 10 Dx3. Not effectively taught4. Not diagnosed or misdiagnosed5. Not treated or mistreated
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History
First described > 200 yrs ago• Myositis/fibrositis• Travell identifies TP’s in the 40’s• Major advances in pathophysiology
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Travell and SimonsTrigger Point Manuals
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Myofascial Pain
• 63 yr. old male s/p mva with multiple facial fxs.• Severe neck & head pain• Limited rom• Multiple consultations & procedures
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SternocleidomastoidPain Pattern
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Suboccipital MusclesPain Pattern & Symptoms
• Head Pain, difficult to localize - “Hurting all over”• Eye and forehead pain and pain at base of skull• Distressing headache caused promptly when weight of
occiput presses against pillow• Head is tilted to one side and rotated to other
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ScaleniROM Test
Scalene-Cramp TestContraction in shortened position
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Treatment
• TP injections of bilat. scm, scalenes, post. Cx muscles.
• Relief of pain & restoration of rom
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60 yr. old woman with R otalgia x 1 year.Multiple ENT consults, imaging & scoping.Numerous medications.
Copyright 2015 Project ECHO®
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Sternocleidomastoid muscle
Copyright 2015 Project ECHO®
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Masseter Pain PatternSuperficial and Deep
Superficial Layer• Pain is major complaint
Lower jaw, eyebrow, maxilla & mandible
Deep Layer• Pain deep in ear and/or
“stuffiness”
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Myofascial Pain Syndrome
• Simple or complex• Pain and/or autonomic phenomena referred
from active myofascial trigger points with associated dysfunction
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Skeletal Muscle
• Largest organ, > 40% of body weight• 400 muscles• All can develop TP’s
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Myofascial Trigger Point (TP)
• A hyperirritable locus within a taut band of skeletalmuscle
• Located in the muscle tissue or its associated fascia
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Trigger Point
• Active: causes pain• Latent: silent, but may reduce motion and cause
weakness
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Nature of Trigger PointsA Hyperirritable Spot
Associated with ahyper- sensitivepalpable Nodule
Found in a Taut BandMid belly, motorendplate zone
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Nature of Trigger PointsAt the site of the
Myoneural Junction(Motor Endplate)
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Integrated Trigger Point Hypothesis 5
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Uncovering the biochemical milieu of myofascial trigger points using in vivo microdialysis:An application of muscle pain concepts tomyofascial pain syndromeJay P. Shah, MD, Elizabeth A. Gilliams, BARehabilitation Medicine Department, Clinical Center, National Institutes of Health
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Shah, J.P., et al., An in-vivo microanalytical technique for measuring the local biochemical milieu of human skeletal muscle. J Appl Physiol, 2005. 99: p. 1980-1987Shah JP, Danoff JV, Desai MJ, Parikh S, Nakamura LY, Phillips TM, and Gerber LH, Biochemicals associated with pain and inflammation are elevated in sites near to and remote from active myofascial trigger points. Arch Phys Med Rehabil. 89(1): 16-23, 2008
pHBKN
TNF
IL6Sub P
norepinephrine
What about ACh?
pH
Changes in pH, neurotransmitters, kinins
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Referred pain from TPs
• Dull, aching, deep• Does not follow segmental or neurological patterns• Usually occurs within same dermatome, myotome
and scleratome
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Active TrPs in gluteus minimus muscle. subacute sciatica. DN related vasodilatation in the area of referred pain. Vasodilatation: involvement of sympathetic nerve activity in myofascial pain pathomechanism.
BMC Complement Altern Med. 2015 Mar 20;15:72. doi: 10.1186/s12906-015-0587-6.Intensive vasodilatation in the sciatic pain area after dry needling.Skorupska E1, Rychlik M2, Samborski W3.
Evidence of Sympathetic Nervous System Activity in TrPpathophysiology: Vasodilation after TrP dry needling of the Gluteus Minimus in subacute sciatica
patients:Panels 1,2,3
panel 4:control
Sympathetic Nervous System Activity in Trigger Points
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Ultrasound appearance of a trigger point. J Med Life. 2015 Jul-Sep;8(3):315-8.Trigger points--ultrasound and thermal findings.Cojocaru MC1, Cojocaru IM2, Voiculescu VM3, Cojan-Carlea NA1, Dumitru VL4, Berteanu M4.
Ultrasound appearance of a trigger point
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Conf Proc IEEE Eng Med Biol Soc. 2010;2010:5302-5. doi: 10.1109/IEMBS.2010.5626326.Understanding the vascular environment of myofascial trigger points using ultrasonic imaging and computational modeling.Sikdar S1, Ortiz R, Gebreab T, Gerber LH, Shah JP.
Color Doppler Image and Blood Flow Waveforms
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Ultrasound appearance of a trigger point. J Med Life. 2015 Jul-Sep;8(3):315-8.Trigger points--ultrasound and thermal findings.Cojocaru MC1, Cojocaru IM2, Voiculescu VM3, Cojan-Carlea NA1, Dumitru VL4, Berteanu M4.
Ultrasound appearance of a trigger point
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Look
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Listen & Observe
• Gait• Posture/biomechanics• Movement• Pain behavior• Your response
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Feel
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Grooming
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Grooming
• Wash your hands• Explain what you’re doing• Feel, don’t poke• Know what you’re feeling• Know what it does• Test it
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Palpation – In one direction only
Pincher Flat
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Palpation
Must be directly on or very near
Central TrP(Motor End Plate zone)
to elicit aLocal Twitch Response
(LTR)
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TrapeziusAnatomy, Innervation & Function
“The Coat Hanger”• Accessory Nerve
Cranial Nerve XI• Entire muscle acting
bilaterally assists extensionof cervical and thoracicspine
• Acting unilaterally rotatesscapula to direct glenoidfossa upward
• Elevates and adductsscapula
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Upper TrapeziusPain Pattern & Symptoms
TrP 1Severe posterolateral neck
pain, often constant, extends to side of head, in temple and
back of orbit
Occasional pain at angle of jaw and rarely, pain to lower molar
teeth
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Upper & Lower TrapeziusPain Pattern & Symptoms
TrP 2Neck pain without
headache
TrP 3Suprascapular, acromial,
upper back and neck pain after all other TrPs have
been inactivated
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Levator ScapulaePain Pattern & Symptoms
“Stiff Neck”
• Limits neck rotation due topain on movement
• Not able to turn head fullyin either direction, turnsentire body instead
• Active TrPs refer severe painat rest
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InfraspinatusAnatomy, Innervation & Function
• Suprascapular Nerve• Lateral rotation of arm• Assists in stabilizing head of
humerus in glenoid cavity• Upper fibers assist
abduction
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30 yr old woman s/p gastric sleeve
• Severe, constant ruq abd. pain• Extensive work-up
• 64 yr old woman s/p hernia• Rlq abd. pain
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Rectus AbdominisAnatomy, Innervation & Function
Rectus• 7th-12th intercostal nerves• Increases intra-abdominal pressure• Strong forward flexion• Active when weight carried on
back, coughing and when jumping up
Pyramidalis• 12th Thoracic N.• Pyramidalis tenses linea alba
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Rectus AbdominisPain Pattern & Symptoms
• Upper TrPs - Abdominal fullness and indigestionAcid Reflux, nausea, vomiting and gastric distress
• Periumbilical TrPs - Abdominal Cramping or Colic• Lower TrPs - Dysmenorrhea, may cause diarrhea and symptoms
mimicking diverticulosis/gynecological disease• Can mimic urinary tract infection with NO positive laboratory
findings
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Thoracolumbar ParaspinalsAnatomy & Innervation
Dorsal primary division of spinal nerves
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Thoracolumbar ParaspinalsPain Pattern
Multifidae & Rotatores
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Thoracolumbar ParaspinalsPain Pattern
Iliocostalis Thoracis & LumborumLongissimus
Thoracis
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Quadratus LumborumAnatomy, Innervation & Function
• Spinal nerves T12 and either L1-L3 or L1-L4
• Bilaterally - extends lumbar spine
• Unilaterally - lateral flexor of spine
• Stabilizes lumbar spine• Hip hiker• Assists forced exhalation -
coughing
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Quadratus LumborumPain Pattern & Symptoms
• Painful and difficult to turn over in bed or ontreatment table
• Coughing, sneezing and laughing quite painful• Painful to stand upright or walk
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Quadratus Lumborum Precipitation & Perpetuation
• Short Upper Arms• Asymmetrical Pelvis (Small Hemipelvis)• Lower Limb-Length Inequality (LLLI)• Chronic strain of walking with a
walking cast• Foot mechanic problems that produce
asymmetrical gait, such as pronation
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Quadratus Lumborum Precipitation & Perpetuation
Small HemipelvisA Lateral tilt of pelvis, S-shaped functional
scoliosis, shoulder tiltB Correction by leveling with Sit-padC Counter correction under wrong side
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Quadratus Lumborum Precipitation & Perpetuation
Short Upper Arms
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Suboccipital MusclesPain Pattern & Symptoms
• Head Pain, difficult to localize - “Hurting all over”• Eye and forehead pain and pain at base of skull• Distressing headache caused promptly when weight of
occiput presses against pillow• Head is tilted to one side and rotated to other
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Multifidi and RotatoresDeep Paraspinals ROM Test
Waist Twist in ChairSpine is flexed and simultaneously rotated right
Test for restriction in right multifidi/rotatores
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Gluteus MinimusPain Pattern & Symptoms
• “Pseudo-Sciatica”
• Anterior fibers painful whenrising from chair withdifficulty straightening
• Painful and limps whenwalking
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Treatment
• Myotherapy/PT• Stretching: stretch and spray• Massage/ pressure/backknobber• Trigger point injection
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Trigger point injection
• Know anatomy• Risk factors: anticoag., bleeding, syncope
pneumothorax, nerve block, post inj. soreness• Lidocaine 0.5% or 1%• No steroids• Range of needle sizes: 30 gauge ½ inch to spinal 22/
23/ 2.5• 25g 1-1.5 inch most common• Take a course