Tag: cerebrospinal fluid

  • Working with shunts.

    + How do you work with people with shunts? – September 08

    Hi John,

    Your newsletter’s archive is fantastic.  Very easy to use
    (much better than mine). Thanks.
    My question today is about treating people with a shunt
    in the head. Do you(or anyone else) has experience with that?
    Is there a risk of having the shunt come out of place
    (and causing big problems to the person) when working
    on the person? I was wondering because of the movements of
    the bones and membranes in the head (things coming back
    in place).
    Any comments will be much appreciated.
    Odile. Brisbane.

    >>>MY COMMENTS:

    Hello Odile,
    I’m glad you find the newsletter archive useful.
    I’m hoping the ‘search’ function makes it easier for
    people to find what they are looking for across the
    whole site.

    I have treated quite a few people with shunts.
    I’ll just explain what they are for any of the other
    readers who don’t know.

    A shunt is tube that is fitted surgically to relieve
    cerebrospinal fluid pressure. There is a one way valve
    in the shunt that stops the cerebrospinal fluid coming
    back up the tube.  They are usually fitted in people
    who have prolonged or extreme hydrocephalus.

    The types of shunts I have treated have fallen into
    two categories.  Cranio shunts and spinal shunts.
    Spinal shunts go from the drural tube and drain into
    the stomach. Cranial shunts drain from the cranium into
    the heart.

    From my experience they are pretty robust arrangements
    and I have never got the feeling that they would dislodge
    with treatment. The main thing I have felt when treating
    people with shunts is how the fluid dynamics of their
    cerebrospinal fluid is screwed up. Their cranio sacral
    rhythm is usually confused.

    Most of my work has been firstly dealing with the
    underlying cause of the hydrocephalus and then helping
    the person’s system come to terms with the foreignness
    of the shunt.

    This is similar to any kind of work where there is a
    foreign object in a person’s body be it a pin or a screw
    or a pacemaker.

    ***FOLLOW ON COMMENT FROM MALCOLM HIORT***

    Hi John,
    Re Odile’s email/your reply:
    My experience of clients with shunts is that their
    cranial rhythms are compromised.
    Specifically, I notice that maximal expansion/flexion
    is never reached.
    The end-point of movement has a ‘rebound’ quality
    to it, without the ‘tapering’ effect normally palpated.
    I have felt this characteristic diminished amplitude
    throughout the body.

    Another consequence of a shunt is that inducing a
    still point cannot be achieved, at least in my
    experience.
    It seems that when CSF back-pressure begins to
    build within the ventricles, it is vented by the
    shunt.
    Again, this is a bodywide occurrence, no matter
    where the technique is applied.

    I would be interested to get any feedback on my
    remarks at info@craniofascial.com
    www.craniosacralart.com was interesting.

    cheers John, keep up the good work.

    Malcolm Hiort, Director,
    Australian Craniofascial Therapy School

    >>>MY COMMENTS:

    Thanks for that Malcolm.
    Shunts certainly compromise the fluid dynamics of the system.

    ***FOLLOW ON COMMENT FROM AL PELOWSKI***

    There’s a good description and pics of shunts in
    the Netter Collection of Medical Illustrations,
    V.1, the Nervous System, Part II -Neurologic and
    Neuromuscular Disorders.

    In there you’ll see that shunts can be set to
    drain into the peritoneal space rather than the jugular v.

    Peritoneal drainage is often preferred in babes
    and kids because the longer tube allows for growth.

    But, either way, shunting tubes have to penetrate
    several layers of membrane, muscle and fascia.
    This can, and often does lead to chronic infections
    and irritation.

    Another problem is the silting up of the valve and
    the thin cannula–CSF is loaded with salts (electolytes)
    that can crystallise out of solution in the margins
    of turbulent flows and eddies in the apparatus.

    Shunting therefore can require frequent reinsertions
    + drugs (e.g. antibiotics and steroids)

    Some of the risk factors are covered in
    Toru Fukuhara et al, “Risk factors for Failure of
    Endoscopic Third Ventriculostomy for Obstructive
    Hydrocephalus,” in the journal Neurosurgery, V.46,
    No. 5, May 2000, where you will also find
    some 40 references.

    It might also be useful to see*
    *CRANIOSYNOSTOSIS SYNDROMES by **J. Cary Moorhead,
    MD, in Grand Round Archives June 24, 1993.

    I’ve worked cranially with maybe a dozen babies
    and kids with shunts.
    It’s vital to know the history of it and to be
    aware that tubal irritation and immune suppression
    will distort and disempower the child’s responses.
    There are loads of cautions in this work, but no
    firm contraindications I can think of.
    Other practitioners seeing cases of craniosynostosis?
    Please get in touch.

    I believe it’s a mushrooming problem worldwide.

    >>>MY COMMENTS:

    Thanks for that Al.

    For those of you that don’t know, Craniosynostosis,
    is a condition where some or all of the sutures in the
    skull of an infant or child become fused.

    I have treated a few children with it in Australia.
    The cranium felt like it was made of marble.
    Hardly any movement.  In all cases it felt like
    a blueprint problem to me.  It felt like the
    developmental process of the system was accelerated.
    It felt like the sutures had met each other with such
    force that they fused in a solid way that no adult would.

    In all the children I saw, the condition had got to
    the point where they needed surgery to separate the
    sutures. My sense was that if I had seen them earlier
    we could have avoided the surgery.

  • B1.19.0 – The Membrane System

    << Back to Basics 1 syllabus

    *As with all anatomy I suggest you search for each new term on google then click on the ‘Images’ tab at the top of the page.  Look at as many different pictures of each structure, from as many different angles as you can.  Then look at it on the Visible Body. This will help you get a 3 dimensional image of the structure in your head.

    The Membrane System is made up of three layers-

    ❍ Pia mater This is the innermost layer and it adheres to the surface of the brain and spinal cord.

    ❍ Arachnoid mater This is the middle layer and is close to the dura.

    ❍ Dura mater This is the outer most layer and is very tough. It is firmly attached to the bones of the skull, C2, C3, and S2. It is free floating around the rest of the spine.

    These three sheaths of membrane are known collectively as the meninges.  They surround and enclose the central nervous system or brain and spinal cord.  The space between each layer is filled with cerebrospinal fluid.  The space between the arachnoid and dura mater is called the Sub arachnoid space. It is the Sub arachnoid space that contains the majority of the cerebrospinal fluid.
    The Cranial Dura is further sub-divided into two layers.
    The outer layer lines the inside of the cranuim and the inner layer forms several folds or infoldings called –

    ❍ The Falx Cerebri – A sickle-shaped membrane running from the front the to back of the cranium along the mid line between the two Cerebral hemispheres.

    ❍ The Falx Cerebelli – A much smaller sickle-shaped membrane passing down the midline of the Occipital region between the two Cerebellar hemispheres.

    ❍ The Tentorium Cerebelli – A tent-shaped membranous structure passing almost horizontally across the Cranium dividing the Cerebrum above from the Cerebellum below.

    ❍ The Diaphragma Sellae – A small horizontal membrane forming a roof over the Sella Turcica of the Sphenoid bone and enveloping the Pituitary Gland.

    It is helpful to think of the Cranial Dura as being like a balloon with four infoldings inside.  Restrictions in this membrane can pull the cranial bones into compression and restrict areas of the brain.

    As stated previously, but it is worth saying again, all parts of the Membrane system are interconnected forming a Reciprocal Tension Membrane System.  Meaning that tensions within any part of the Membrane System are liable to influence all other parts of the Membrane System.

    << Back to Basics 1 syllabus