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2/26/2015 1 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 3 Lodges and motor units Fascia and septa coordinate sinergic motor units localized in different muscle bellies 4
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Page 1: From the inside of fascia come off some Lodges and …smertebehandling.info/wp-content/uploads/2001/12/4_biomechanic-of... · FASCIAL MANIPULATION -BIOMECHANICAL MODEL Simplification

2/26/2015

1

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

3

Lodges and motor units

� Fascia and septa coordinate sinergic motor units localized in different muscle bellies

4

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How CCs have a specific

location?

5

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.

7

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

10

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

12

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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

30

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

31

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

32

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

33

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

35

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?

36

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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. )

37

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


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