Introduction to biomechanics


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Knee Pain or Something Else?

Pain  in  your  knee?biomechanics, it is important that before we
start thinking about orthotics, we need to
Sometimes when you have knee pain and you'vecheck  out  the  hips  and  pelvis.
been to see specialists and nothing seems to
be the answer, you do wonder whether you'llThe first thing to do is to manage the cause.
end up needing divine intervention. WithIn other words we need to re-orientate the
biomechanics becoming more widely understood,pelvis to reduce the leg length discrepancy.
we now know that by sorting out yourTo do this we have to reduce the muscle spasm
biomechanics, we can often reduce the need toin the outside of the hip (in a muscle called
get down on your knees and pray. The affectspiriformis) to allow the joint to
our biomechanics have on our body and there-orientate itself. The best way to do this
vicious circle of injury and pain it canis by performing 'anti-spasm' exercises for
cause is one of the main reasons knee painthe muscle. Stretching or flexibility work
can  be  recurrent.just won't cut it. You need to return the
muscle to normal function, not just stretch
A rotated pelvis for example can go unnoticedit. Once the spasm is eradicated as much as
for many years until the compensations startpossible, then the leg length typically
to cause problems. This abnormal pelvicreturns to normal length. Now you have a
position often causes one leg to appearlevel playing field. If the symptoms have
longer or shorter and the body mustnot subsided and if you still over pronate,
compensate for this. Typically one way itnow you can safely have orthotics prescribed,
compensates is to overly flatten (pronate)as any remaining foot biomechanical problem
the foot of the longer leg to shorten it,will be inherent to the foot. Rehab on your
another  way  is  to  bend  the  knee  more.knee will now have a better chance of working
for  you,  if  it's  still  necessary.
Unfortunately both of these options will
increase the load on the knee. If the footTo fully complete your rehab talk to your
over pronates, it will cause the leg tolocal physio about exercises to stabilise
internally rotate excessively. This rotationyour knee and pelvis. In other words
force will often be absorbed at the knee,exercises that allow your muscles to control
which can result in pain. If the knee bendsyour pelvis and knee without them needing to
too much during mid-stance phase, this willgo into spasm. Part of this process is
de-stabilise the knee and it will naturallyachieved by so-called 'core stability
want to rotate inwards. If this is combinedexercises', but also you need to speak to
with an already over pronating foot, theyour physio about plyometric exercises for
problem is exaggerated. Both of thesepelvic and knee muscles that you can do in
situations are likely to cause knee pain.the  gym.
Certainly if knee pain already exists this
type of load will prevent it from settlingAs a result of one of the largest studies in
down, even if it isn't the main cause of thebiomechanics by Galileo Active we can all
problem.benefit from assessing our biomechanics, in
the comfort of our home. They have developed
Managing these biomechanical issues isa CD ROM software program that helps you
critical if your knee pain is to be managedasses your biomechanics with the software
and allow you to return to long term running.prescribing the exercises needed to remove
Bearing in mind that 60% of thethese biomechanical problems and in turn help
biomechanical problems with your feet are duemanage and prevent the types of knee injuries
to compensations for faulty hip or pelvicwe're talking about in this article.



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