Basic Treatment Principles Flashcards
Somatic Dysfunction
Impaired or altered function of related components of the somatic (body framework) system: skeletal, arthrodial, and myofascialstructures, and related vascular, lymphatic and neural elements.
Viscerosomatic SD
typically has a rubbery tissue texture change
Arthrodial SD
usually a bony end feel at the restrictive barrier
Muscular SD
has a tight, tense end feel
SD associated with strain/counterstraintender points
have more tenderness
Predisposing Factors to SD
Posture
Habitual
Occupational
Active (sports related)
Predisposing Factors to SD
Gravity
Body habitus(obesity, pregnancy)
Weight-bearing
Predisposing Factors to SD
Anatominc Anomalies
Vertebra or facets
Predisposing Factors to SD
Transitional Areas
OA, thoracic inlet, TL junction, LS junction
Predisposing Factors to SD
Muscle Irritability
Emotional stress
Infection
Somatic or visceral reflex
Muscle stress (overuse, overstretch, underpreparation, accumulation of waste products)
Predisposing Factors to SD
Physiologic
locking of a joint
Predisposing Factors to SD
Adaptation to
stressors
Predisposing Factors to SD
trauma
trauma
Predisposing Factors to SD
Compensation for
other structural deficits
Short Leg
Muscle Imbalance
ArthrodialSomatic Dysfunction
It is not “subluxed,” “out of place,” “out of joint,” or “dislocated.”
It won’t complete its normal, full motion.
An external or internal force or factor has caused local segmental irritation sufficient to create focal edema and swelling in a small discrete area.
This causes a tightening of the fascialstructures, myofascialcomponent, and capsular components of a specific joint.
The articulardistortion creates reflex hypertonicityof the muscles crossing that joint, resulting in decreased range of motion.
Motion restoration of the joint results in restoration of normal proprioceptiveinput from the joint and reflex relaxation of muscles surrounding the joint.
2 main theories of SD etiology
Proprioceptive
Nociceptive
It is probably a combination of the two –nociceptiontriggers the SD and proprioceptionmaintains it
Proprioceptive Theory
Alteration in both the intrinsic and extrinsic reflexes
Inappropriate gamma activity (“gamma gain”) creates inappropriate muscle length and tone, resulting in a functionally imbalanced joint
Extrinsic Reflex System
Anterior horn cells of the alpha and gamma efferentsto the muscle receive synaptic impulses from sensory nerves originating in other muscles or organs
Ex: reciprocal inhibition of antagonist muscles and viscero-somatic muscle guarding
Monosynaptic Reflex (Simplified)
Afferent limb from a sensory receptor > spinal cord > efferent limb to a somatic or visceral structure
Ex: patellar tap/knee jerk
Monosynaptic Reflex in Reality
Input to the spinal cord collaterals up and down the cord as well as from the opposite side of the cord > goes through several synapses and interneurons > acts on somatic and sympathetic motoneurons(thoracic/lumbar cord) or somatic and parasympathetic motoneurons(cervical/sacral areas)
How the gamma gain is altered
The gamma gain is one of the determinants of the physiologic motion barrier and the motion barrier of the SD
Resetting the gamma gain may occur via pre-and post-synaptic inhibition at the cord level
This resetting can be affected by cognition. Ex: muscular movement events aren’t as anticipated
Spinal Facilitation
Denslow(1940’s) –found variability in reflex excitability in the paraspinalmuscles of the thoracic spine
These often asymptomatic areas had increased muscle activity as well as pain and tenderness when palpated.
Later studies by Denslowfound that associated visceral organs were affected via altered sympathetic output.
Korr–“facilitated segment”-plays a part in the etiology of SD because that area is hyperirritable and hyper-responsive –muscles in that region will be hypertonic
Somatosomatic
Defensive reflex
Viscerovisceral
Distension of the gut causing increased contraction of the gut muscle
Somatovisceral
Stimulation of abdominal skin inhibits gut activity
Viscerosomatic
Upper back pain with an MI
How does OMT work?
OMT techniques tend to actively stretch the connective tissues in joint capsules, tendons, muscles, and ligaments in the segments of restricted motion.
However, stretching would typically increase the proprioceptiveand nociceptivedrives and worsen the SD.
Therefore, OMT must first decrease or override these drives prior to stretching the tissues.
The method used to change these drives is unique to each OMT technique.
High Velocity Low Amplitude (HVLA)
“An osteopathic technique employing a rapid, therapeutic force of brief duration that travels a short distance within the anatomic range of motion of a joint, and that engages the restrictive barrier in one or more planes of motion to elicit release of restriction. Also known as thrust technique.”
Direct technique
Barrier Mechanics
Evaluate quantity and quality of motion
Quantity: amount of motion from a neutral point
Remember anatomic, physiologic, and restrictive barriers
Quality: palpatorysense of joint motion
End feel: quality of motion at its final barrier
HVLA best suited to SD with restricted motion with a hard end feel
HVLA Steps
The physician precisely positions the patient’s restricted joint to the restrictive barriers of the somatic dysfunction by “stacking” in each plane of the SD.
A short (low amplitude), quick (high velocity) force is applied to the joint to move it through the restrictive barrier –no backing off or winding up.
The joint resets itself and appropriate physiological motion is restored.
HVLA Mechanisms
Abnormal muscle activity maintains joint restriction
When the joint restriction is treated, there is an immediate change in the muscles and the quality and quantity of motion which suggests an immediate change in neural activity
Sudden stretch or change of position of the joint alters the afferent output of the mechanoreceptors in the joint capsule, resulting in release of muscle hypertonicity
But What is the Pop?
Theories:
Release of gas into the synovial fluid breaks the surface tension of the synovial fluid
Snapping or releasing of ligamentousadhesions in the joint
Bone is pulled out of place and snaps back into a neutral position
Ballooning of the joint capsule
The main thing is that you don’t need the snap, crackle, or pop for a successful treatment!
HVLA Indications and Dosage
SD with distinct, firm barrier mechanics*
Useful when not much time is available
The sicker the patient, the less the dose
Generally, treating the same segment with HVLA more than once a week is discouraged due to the possibility of causing joint hypermobility
If the same SD keeps recurring, investigate!
HVLA Contraindications –Absolute*
Rheumatoid arthritis
Down syndrome
Achondroplasticdwarfism
Chiarimalformation
Fracture / dislocation / spinal or joint instability
Ankylosis/ Spondylosiswith fusion
Surgical fusion
Klippel-Feilsyndrome
Vertebrobasilarinsufficiency
Inflammatory joint disease
Joint infection
Bony malignancy
Patient refusal
HVLA Contraindications -Relative
Acute herniated nucleus pulposus Acute radiculopathy Acute whiplash / severe muscle spasm / strain/sprain
Osteopenia/ Osteoporosis
Spondylolisthesis
Metabolic bone disease
Hypermobilitysyndromes
Muscle Energy Technique (MET)
A form of osteopathic manipulative diagnosis and treatment in which the patient’s muscles are actively used on request, from a precisely controlled position, in a specific direction, and against a distinctly executed physician counterforce.
Direct technique
Muscle contraction is a principle mechanism for promoting lymphatic and venous circulation, thereby making muscle energy technique important in the treatment of edema/congestion.