Osteoarthritis is by far
the most common form of arthritis. Unlike rheumatoid arthritis which is caused
by inflammation, osteoarthritis is caused by long-term wear-and-tear in the
joints. After years of use, the cartilage that cushions the joints can break
down, until bone rubs against bone. Osteoarthritis is rarely as crippling as rheumatoid arthritis, but it
can have a big impact on a person's life. It can make it hard to do every day
activities like getting dressed and walking up the stairs. It most commonly
affects the knees, hands, hips and spine. It does not affect both sides equally
and symmetrically as commonly as rheumatoid arthritis. Osteoarthritis is the
cause of knee pain in over half of people over 55. It is not to be confused
with osteoporosis which is “brittle bone disease” and not related to
osteoarthritis.
Who is affected?
Osteoarthritis
is the number one reason for joint-replacement surgery. It can take decades for enough cartilage to
wear down to cause osteoarthritis. It occurs mostly in men after the age of 50
and in women after the age of 40. After menopause, women are twice as likely as
men of the same age to develop the condition. Being overweight and a family
history of arthritis makes you more prone to the condition. However, it has less
of a tendency to run in families than rheumatoid arthritis. Playing a lot of
high impact sport (eg. Gaelic football and rugby) and having an injury or an
operation on a joint can make you more likely to have problems later on.
Symptoms
The main symptoms of osteoarthritis are pain and
stiffness of the joints. The joints may also become swollen although this is
less common than in rheumatoid arthritis. Unlike rheumatoid arthritis, where
pain and stiffness tends to be worse in the morning, the pain of osteoarthritis
tends to get worse throughout the day. The joints may not be able to move as
easily as before. There may be a crunching feeling in the joints. Joints may
make creaking sounds called crepitations. Joints may become misshapen and
knobbly, and they may become unstable (but generally not as severe as with
rheumatoid arthritis).
Diagnosis
Unlike
other forms of arthritis, there is no single test that can check for
osteoarthritis. Outgrowths, swelling, creaking, instability and reduced
movement of the joint can be signs. X-rays only give limited information and in
the early stages of osteoarthritis, joints may look normal.
Treatment
Certain actions can prevent and reduce the symptoms of osteoarthritis
including losing
any excess weight, wearing shock-absorbent shoes, using a walking stick and
wearing a knee brace. Taking regular exercise is important as it keeps weight
down and strengthens muscles which support the joints.
Medicines
There is no cure
for osteoarthritis however certain medication will relieve symptoms.
Paracetamol- Over-the-counter painkillers such as
paracetamol can help. Paracetamol is safe for most patients once taken within
the recommended dosage limits.
NSAIDs- If the pain is more severe, the doctor may prescribe
anti-inflammatory medicines known as non-steroidal anti-inflammatory drugs
(NSAIDs) to reduce the inflammation. These are helpful in reducing pain,
swelling and stiffness. Examples include diclofenic (Difene®, Diclac®),
naproxen (Naprosyn®) or etoricoxib (Arcoxia®). Ibuprofen
is an NSAID available over the counter in pharmacies. NSAIDs should be avoided
or used in caution with asthma and heart problems and can cause stomach ulcers
if over used.
Topical preparations-
Many
NSAIDs are available in topical forms such as creams or gels which can be
rubbed on to give a local effect (eg) Difene Gel®, Fastum Gel®.
These topical forms have fewer side effects than NSAIDs taken orally. However
they are likely to be less effective as less of the drug is absorbed.
Opioid Analgesics- Opioid
analgesics such as tramadol are prescription only painkiller which may be
considered in cases where NSAIDs are not tolerated or ineffective. However,
opioids can become additive. Side effects include drowsiness, nausea and
constipation.
Steroid Injections- Steroid
injections into the affected joints may be a treatment option. It should only
be considered where there is inflammation in the joint. However, the effects of
steroid injections only last up to four weeks (often only a week) so it is not
a long term solution.
Surgery
Surgery
should only be considered when all other options have been tried. Surgical options available have advanced recently. Some
options such as realignment and hip resurfacing are available even if you have
only mild osteoarthritis. Hip resurfacing is an alternate to hip replacement
and is more often used in younger patients.
It
involves replacing the socket where the top of leg attaches to the pelvis with
a “metal socket”. The advantages of this compared to hip replacement is that it
is very durable for young and active patients. It allows the patient to
maintain full mobility and even return to active sports in many cases. Some
research shows that there is less pain and stiffness after hip resurfacing
compared to hip replacement. However more research is needed to confirm this.
Patients normally can resume normal daily activities a few weeks after hip
resurfacing. Hip resurfacing lasts for 10 to 15 years on average.
If you have a
particularly painful joint you may need an operation to replace it. This is
most commonly done for the hip and knee joints and both of these have high
rates of success in improving mobility and reducing pain. With proper selection
of patients, 95% of hip and knee replacements have excellent results with 95%
of replacement joints lasting 15 years. 85% of hip and knee replacements are
due to osteoarthritis.
Whelehan’s
physiotherapy service
Whelehans physiotherapy service is available on
Wednesdays and on Saturday mornings. Book a physiotherapist appointment by
calling Sinead at 083 1722171.
Osteoarthritis
information event
Whelehans
Pharmacy in conjunction with the Westmeath Branch of the Arthritis Ireland are hosting an Osteoarthritis Information evening
on Wednesday November 20th in the Annebrook Hotel, Mullingar at
7:30pm. The guest speaker for the evening is orthopaedic surgeon from Midland
Hospital Tullamore, Eoin C Sheehan,
MD FRCS (Ortho). Book your free
place by calling Whelehans at 044 93 34591.
This
article is shortened to fit within this Health Blog. More detailed information
and leaflets is available in Whelehans or check www.whelehans.ie
Eamonn Brady is a pharmacist and the owner of Whelehans Pharmacy, Pearse
St, Mullingar. If you have any health questions e-mail them to info@whelehans.ie