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BIOMECHANICAL MODEL in
FASCIAL MANIPULATION©
MYOFASCIAL UNIT
CENTRES OF COORDINATION
CENTRES OF PERCEPTION
CENTRES OF FUSION
MYOFASCIAL DIAGONALS AND SPIRALS
www.fascialmanipulation.com
THE MYOFASCIAL (MF) UNIT
a MF unit is composed of :1. A group of motor units, in one or
more muscles (monoarticular
and biarticular), that move a
body segment in a specific
direction
2. the joint that is moved
3. nerve (efferents, receptors,
afferents) and vascular
components
4. the fascia that connects these
elements together
Fascial Manipulation © - Luigi Stecco
Mono fibres : vastus med, lateralis,
intermedius. Bi fibres: Rectus femoralis
From the inside of fascia come off some
septa that form the lodges
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Lodges and motor units
� Fascia and septa coordinate sinergic motor units localized in different muscle bellies
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How CCs have a specific
location?
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CC an-ge
THE MYOFASCIAL UNIT
CC
CC
CP
CP
Formation of the CP
� Centre of perception� Point of convergence of the tension of the ipsodirectional motor units;
� Vectorial centre of the traction of capsules, tendons, ligaments;
� Region of proprioception of the joint movement in one direction.
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CP an-ge
CENTRE OF PERCEPTION
Each mf unit has a Centre of Perception
(CP) where movement occurring at the
joint is perceived
– A vectorial centre,
– Resultant of traction of the capsule, tendons,
and ligaments
A CP can become painful
• If the unidirectional forces of the mf unit are
not synchronized
• Mechanoreceptors in the capsule, ligaments
and tendons are subjected to non-physiological
or excess traction.
Painful afferents result
Anterior knee joint
Fascial Manipulation © - Luigi Stecco
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THE MYOFASCIAL UNIT
Elbow flexion:
brachialis - monoarticular fibres
biceps brachii - biarticular fibres
- anterior brachial fascia
- elbow joint
- nerve and vascular components
This pattern repeats itself in all mf units
Fascial Manipulation © - Luigi Stecco
Lodges and formation
of CCs
� Fascia lodges form the myofascial units that permit the mouvement of the distal articulation in the three planes of the space
� From the muscle spindle to endomysium, perimysium until epimysium where is present the CC
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INTERACTION of AGONIST – ANTAGONIST
• Any alteration in the fascia of agonist mf unit can effect the antagonist mf unit
• Some muscle fibres of the
agonist mf unit connect to
the fascia of the antagonist
mf unit via the
intermuscular septa.
lateral
head TricepsBrachialis
Fascial connections with capsules of mechanoreceptors, muscle
spindles and GTO are also important for spatial, afferent information
to Central Nervous System.
Fascial Manipulation © - Luigi Stecco
Myofascial unit
angonist-antagonist
� Every segments is stabilize in the space thanks three couples of forces (m. angonist antagonist)
� Hypertonicity of the agonist myofascial unit creates a hypertonicity of the antagonist MFu
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MYOFASCIAL SEQUENCES of MF UNITS
• 3D movement and stabilisation of each segment is guaranteed by synergy and synchrony between proximal and distal, antagonist and agonist mf units
• MF units that coordinate movement in the same direction are linked by myofascial insertions and biarticular muscle fibres to form myofascial sequences
Fascial Manipulation © - Luigi Stecco
antemotion
retromotion
re
an
mediomotion
lateromotion
la
me
extrarotation
intrarotation
er
ir
MYOFASCIAL SEQUENCESFascial Manipulation © - Luigi Stecco
anan
anan
MF SEQUENCES TERMINATE IN THE EXTREMITIES
Fascial Manipulation © - Luigi Stecco
1° Simplification : define new boundaries on the human body
The Fascial Manipulation segments are the anatomic
topographic division of the body!!
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Example : COXA CX SEGMENT
It extends from the inguinal ligament anteriorly to
the sacrotuberous ligament posteriorly, and includes the proximal third of the thigh
Each body segment has 6 myofascial units coordinating its movement
� 78 mf units - trunk and limbs
� 18 subunits - head.
� Total of 14 body segments that move in 6 directions on 3 planes
CNS + movement: finalized gestures or patterns of movement, stored
as multiple representations in the cortex. Not single muscle activity.
• New theories of motor control: equilibrium point hypothesis,
principle of abundance and uncontrolled manifold hypothesis...Latash M.L.
@ CNS interprets/programs movement in terms of
spatial directions and angles
MOVING ON6
Classical anatomy terms
can be contradictory
Hip flexion/ knee
extension or Hip
extension/knee flexion -
same directions.
Pronation /supination like
inversion/eversion
HOWEVER6
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2° Simplification: Define movement
in terms of direction :
SAGITTAL PLANE
Antemotion (AN)
Retromotion (RE)
FRONTAL PLANE
Lateromotion (LA)
Mediomotion (ME)
HORIZONTAL PLANE
Intrarotation (IR)
Extrarotation (ER)
ANTEMOTION (AN)
forward movement of a body part on the sagittal plane
Example:
Shoulde elevation, neckflexion, hip flexion and knee extension = AN
RETROMOTION (RE)
backwards movement of a body part on the sagittal plane
Example: neck extension,
the upper limb extension,
the knee flexion = RE
EXTRAROTATION (ER)
rotation from a neutral position outwards right or left on the horizontal plane
e.g. supination (wrist), external rotation of the hip = ER
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INTRAROTATION (IR)
Return to a neutral position from extrarotation
e.g. pronation (wrist), internal rotation of the hip = IR
LATEROMOTION (LA)
Movement of a segment on the frontal plane, from the median line outwards
Example:
abduction, right and left lateral flexion = LA
MEDIOMOTION (ME)
Medially directed
movements on the frontal plane
e.g. Adduction of the upper and lower limbs, return to neutral = ME
Spatial planes and directions of movement
ANTE AN MEDIO ME INTRA IR
RETRO RE LATERO LA EXTRA ER
Sagittal plane Frontal plane Horizontal Plane
3° Simplification : ABBREVIATIONS
ER
IRLA
RE
AN
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Initials of the movement performed
+ initials of body part that moves
Example: the Mf unit of AN-CU indicates:
AN: ante, forward, related to flexion
CU: cubitus latin for the elbow
So@ AN-CU = elbow flexion
6 AN-GE = knee extension
A NAME for each MF UNIT ?Sequences of limbs
and trunk
� The sequence of the limbs are costitute by only one fascial lodge
� The trunk sequence are costitute by two parallel fascila lodges� bilateral: ante, retro
� unilateral: latero
� opposite: intra, extra
an
re
laer
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RE
ANME
AN
RE
ME
LA LA
ERER
IR IR
Posture and mf
sequence
� The mf unit of ante and retro control the balance in the sagital plane.
RE-CL AN-CL
AN-CA
RE-CA
RE-GE AN-GE
PIANO SAGITTALE
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Posture and mf
sequence
� The intra and extra mf unit control the balance in the horizontal plane.� These units are important for the dynamic actions and are correlate with the spirals
ER-GE
IR-GE
ER-CA
IR-CA
ER-CL
IR-CL
PIANOORIZZONTALE
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Two
Agonists
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Posture and mf
sequences
� The mf unites of latero and medio control the stability in the frontal plane. �An alteration of the poise of the food create a new balance in the superior mf units
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Hypothesis: MYOTENDINOUS EXPANSIONS that unite MF UNITS in MF
SEQUENCES could contribute to maintenance of basal tension?
Force transmission
and proprioceptive
information for motor
control between
segments.
Hypothesis: This
would require a
basal tension of the
fascia.
Fascial Manipulation © - Luigi Stecco
Sequence and
posture
� The mf sequences helps the SNC to adapt the posture
anre
pianofrontale
pianosagittale
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Compensation along the same sequence
� If the la-cx mf unit become densified (alteration of the viscosity of the loose connective tissue) it create a hypertone along the prossimal and distal part of the same mf sequence.
�Could this hypothesis explains the lateral sciatic pain?
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Compensation in one plane (with
symptoms and signs)
� Omolateral compensations� Example: A coxalgia could be associated with a omolateral LBP or periarthritis (lateral seq.).
� Controlateral compensation� Example: a lateral neck pain could be corralate with a controlateral LBP (extrarotation seq. )
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CENTRES OF FUSION (CF)
• Small areas of fascia where vectors of several mf units converge
• Cf are located in the
retinacula, near joints,
and, in the trunk, along
lines of union of some
fascial sheaths.
• Multidirectional vectors of proximal and distal segments can converge in cf.
Anterior Shoulder
AN HU
LA HU
AN LA HU
Fascial Manipulation © - Luigi Stecco
an-la-sc
an-la-hu
an-la-cu
an-la-ca
an-la-di
an-la-cp
an-la-cl
an-la-th
an-la-lu
an-la-pv
an-la-cx
an-la-ge
an-la-ta
an-la-pe
an-me-sc
an-me-hu
an-me-cu
an-me-ca
an-me-po
an-me-cl
an-me-th
an-me-lu
an-me-pv
an-me-cx
an-me-ge
an-me-ta
an-me-pe
4 diagonals connect centres of fusion
MYOFASCIAL DIAGONALS
an-la-cp
re-me-cl
re-me-sc
re-me-hu
an-la-cu
re-me-ca
an-la-di
re-me-th
re-me-lu
re-me-pv
re -me-cx
an-la-ge
re-me-ta
an-la-pe
an-me-cp
re-la-cl
re-la-sc
re-la-hu
an-me-cu
re-la-ca
an-me-di
re-la-th
re-la-lu
re-la-pv
re -la-cx
an-me-ge
re-la-ta
an-me-pe
re-la-cp
an-me-cl
an-me-sc
an-me-hu
re-la-cu
an-me-ca
re-la-di
an-me-th
an-me-lu
an-me-pv
an-me-cx
re-la-ge
an-me-ta
re-la-pe
re-me-cp
an-la-cl
an-la-sc
an-la-hu
re-me-cu
an-la-ca
re-me-di
an-la-th
an-la-lu
an-la-pv
an-la-cx
re-me-ge
an-la-ta
re-me-pe
Ante-medio
Ante-latero Retro-medio
Retro-latero
MYOFASCIAL SPIRALS
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Centre of Coordination
= point on deep fascia
where unidirectional
muscular forces
converge
Mf unit =
monoarticular and
biarticular
unidirectional muscle
fibres, their deep
fascia and the joint
they move in one
direction on one
plane.
FASCIAL MANIPULATION - BIOMECHANICAL MODELSimplification of a complexity
an-ge
CP
Me-ge
An-me-ge
CP = Centre of perception , where pain is felt
Centre of fusion =
points where vectors
from 2 adjacent mf units
converge.
Cf can combine along
myofascial diagonals or
spirals.
14 body segments.
Each segment served
by six myofascial units
(mf units).
Ir-ge
We will speak about the muscle region only for semplicity
Thank you Thank you
Palazzo della Ragione, Padova