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| Introduction |
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The knee
is the most complex joint in the body. It connects the thighbone (femur)
to the leg bone (tibia). There are 4 major ligaments (anterior and posterior
cruciate, medial and lateral collaterals) and several smaller less important
ligaments. There is 1 large ligament-like tendon (patella tendon) and
many muscles of the leg have their tendon attachments to the bone at or
near the knee joint. There are 2 small but very important shock absorbers
called cartilages (meniscus is the medical term for these). The bone ends
inside the joint are covered with a thick layer of shock absorbing gristle
called articular cartilage - not to confused with the cartilages (or meniscus).
There are a few other useful structures in the knee such as the patella
(kneecap) and the fat pad. Finally there are a few useless structures
as well such as the plicas. So over all is a fairly complex structure
and it is hardly a wonder that it goes wrong a bit (or a lot) at times.
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Australians
are obsessed with sport and participate more and longer than any other
nationality. So they wear out their knees faster and have more injuries
than their counterparts in other countries.
As a results Australian knee surgeons have much more experience than overseas
surgeons particularly with the demanding task of returning an elite sportsperson
back to professional sport fast and safely. In addition our private health
system allows surgeons the funds to invest in the very latest equipment
available internationally for the best management of these problems.
It is disappointing to see a few of our elite athletes seeking overseas
surgeons when there are much better ones right here in Australia!
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Injuries
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The annual
sports injury rate in Australia is about 1 million of which 12% are knee
injuries (120,000). The direct cost of these injuries was estimated by
the National Better Health Program Report of 1990 to be $100m with a further
$100m in cost of lost work. These costs are much higher now in the new
millennium.
Sports such as netball, basketball, soccer, rugby, indoor cricket and
Australian football have an estimated seasonal knee injury rate of 11-20%.
These figures highlight the reason why sports medicine practitioners
(doctors and physiotherapists) and knee
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surgeons have so much experience and expertise in managing these
injuries well in Australia.
Other Knee Problems
There is obviously a lot of other knee problems that are not always due
to sport (e.g. arthritis) but there is a lot of crossover between sports
and non sports related problems. Hence the local practitioners again fortunately
have an edge in experience to help patients.
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Investigations of knee problems
Nothing beats a
detailed history and examination particularly by an experienced
practitioner to diagnose a knee problem. |
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However
radiological examination is often (if not usually) required and can vary
from a simple X-ray to a detailed MRI or Bone Scan depending on the possible
problem. Other investigations may be required. Sometimes a swollen joint
requires that the fluid is drained from the knee (a simple procedure performed
in the doctor's office) and the fluid sent to the laboratory for analysis.
Blood tests are also occasionally required to assist with knee problem
diagnosis.
All of
these investigations take time and unfortunately involve costs that are
not always fully covered by private insurance.
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Treatment of knee problems
A-Non
Operative Not all knee problems require surgery and many can be
significantly improved or cured by quite simple measures although a high
degree of patient involvement and responsibility may be required and is
difficult for some people.
For example an early arthritic knee in
a young person may only be able to be helped (but not fixed) by a
significant reduction and alteration of sports involvement or activities,
and weight loss by diet alteration (obesity is one of the biggest problems damaging Australian knees). Both of these require a difficult
degree of patient commitment!
Other simple treatment options to
help a wide variety of knee complaints include intermittent medication,
physiotherapy, splintage, walking aids (cane or stick), joint injections,
acupuncture and podiatry. It is not the intention of this website to provide advice on these alternative or complimentary treatments. People seeking further information should consult websites or practitioners in these areas. In particular orthopaedic surgeons are NOT qualified to provide advice on exercise programs and people should consult one of Australias many well qualified sports physiotherapists for this.
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| B-Operative |
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Arthroscopic surgery of the knee involves inserting (under a light
anaesthetic) a small microscope into the knee joint to confirm or assist
the office diagnosis. Usually (but definitely not always!) something useful
or even curative can then be done to the knee through the arthroscope.
This is usually done as a day surgery procedure and should be done by someone with more skill than Dr Fred to the right.
Open surgery
techniques vary enormously depending on the procedure. Some procedures
such as a full knee replacement (total knee Arthroplasty) are major
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surgical
endeavors and require that patients be in hospital for up to 6 days.
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Success
rates for surgery
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Unfortunately although the human body is a bit like a machine
(wears out if you work it hard enough long enough!), it does not always
respond to maintenance, servicing and repairs as well as a machine.
Success rates for surgery vary from condition to condition and the surgeon
should give his/her patient a likely success rate (verbally or as part of
printed patient information). This includes any possibility that the knee
could be worsened by the surgery. This is rare but does occur especially
for kneecap surgery.
Is there anything patients can do to increase
the likely success rate of surgery? YES! The most important thing is to
ask if the surgeon is very experienced with this particular type of
surgery and has a good reputation for successful results. Patients deserve
better than to be sent to a surgeon largely because he/her is a buddy or
golf pal of the person referring the patient. Patients should ask around
about who is good and who isn't before accepting a single recommendation
as to who to see.
Data available from the Swedish and New Zealand National Arthroplasty Registers shows for example that the revision rate ("failure rate") for partial knee replacements is up to 4 times higher with "low volume" surgeons than with high volme surgeons!.
It is probable that a surgeon should perform over 100 cases per year of complex procedures such as Cruciate Reconstructions and Joint Replacements to retain the skills to do the operation well. Also EXPERIENCE is invaluable (usually NOT appreciated by young patients!) so patients should ask how long their surgeon has been in PRIVATE practice (cos we all add our 6-8 training years when asked this question!!) and how many of these procedures he/she performs per year.
The second most important thing is to cooperate
fully with the after surgery treatment. Surgery is usually only half the
event and the rehabilitation can make or break the result. The surgeon
will often work closely with a limited number of experienced
physiotherapists who understand the detailed nature of the surgery and the
surgeon's specific requirements for successful rehabilitation. This is the
same concept as saving all your pennies to buy a BMW then having it
serviced by your local garage instead of the BMW dealer. Physiotherapy is
highly specialized and is not just a pretty girl rubbing your leg! South
Australian physiotherapy standards are among the best in the world due to
our excellent local University training and post graduate courses. Some
patients find it difficult to wait long enough for full recovery and a
great degree of patience and positive optimism can be required before a
good result occurs.
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Complications
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Complications can occur with any surgery unexpectedly and vary in
nature from simple delayed wound healing to serious problems like deep
infection. Responsible surgeons are aware of these complications and take
precautions to minimize the risk but they cannot be eliminated.
Most (but not all) complications are not due to surgeon error but simply
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the
known risks of the procedure, which the patient must accept in undergoing
surgery.
Although patients may be increasing encouraged to launch
malpractice lawsuits against doctors for these problems the vast majority
will come to nothing and just create a lot of paid report writing for
doctors and lawyers. Smart patients will discuss and accept these risks
with their surgeon. The smartest patients will seek the most experienced
surgeons to reduce risks as low as possible!
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Is it safe to
continue?
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Another
important question to ask is what is going to happen to this knee even
if the treatment is successful it the immediate term. In other words,
the question should be asked "am I going to pay a penalty later in life
if I continue doing the same sport or activities as I did before the problem
and treatment?"
This can be a very serious issue with major implications. The football
club may be paying for the treatment to have their star back for the finals
and the next 5 seasons all of which may result in a much higher chance
of painful arthritis later in life!! Or it may be possible to help a knee
problem quite a bit with simple arthroscopic surgery but a return to the
same occupation may damage the knee even worse in the longer term.
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These
are serious issues, which a responsible surgeon will want to discuss with
you and a responsible patient will want to hear.
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IT VERY IMPORTANT TO UNDERSTAND THAT THE FEEDBACK SECTION OF THIS WEBSITE IS ONLY FOR SUGGESTIONS TO IMPROVE THE SITE. QUESTIONS CONCERNING PERSONAL KNEE PROBLEMS CANNOT BE ANSWERED FOR A VARIETY OF REASONS INCLUDING MEDICO-LEGAL ISSUES AND TIME CONSTRAINTS.
DISCLAIMER: Not all knee conditions are described in this text and not all cases of the conditions
described fit the descriptions given above. People with knee symptoms should use these descriptions
as a guide only and seek expert opinion. They should not make decisions concerning investigation
and treatment based on these descriptions.
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