If you have been diagnosed with osteoarthritis you may have been led to believe that you should rest more and avoid certain activities or movements. You may be fearful that your mobility is reducing and you may worry that you might fall due to you knee giving way. Knee pain due to osteoarthritis can be helped with a few sessions with a physiotherapist. A physio can give you advice and education about osteoarthritis and build an exercise programme with you to strengthen the muscles in your knee and hip joints. By strengthening these muscles, the load on the knee joint is reduced and in turn reduces your pain and helps improve your knee stability. Contact us at www.physiointhesticks.co.uk and we can help you with an online physio appointment or a local home visit.
What is osteoarthritis?
Osteoarthritis is the most common form of arthritis and affects weight bearing joints such as the knee or joints that are used a lot in life such as in the hand. In a healthy joint, a coating of tough but smooth and slippery tissue, called cartilage, covers the surface of the bones and helps the bones to move freely against each other. When a joint develops osteoarthritis, part of the cartilage thins and the surface becomes rougher. This means the joint doesn’t move as smoothly as it should.
When cartilage becomes worn or damaged, all the tissues within the joint become more active than normal as the body tries to repair the damage. The repair processes may change the structure of the joint, but will often allow the joint to work normally and without any pain and stiffness. Almost all of us will develop osteoarthritis in some of our joints as we get older, though we may not even be aware of it.
However, the repair processes don’t always work so well and changes to the joint structure can sometimes cause or contribute to symptoms such as pain, swelling or difficulty in moving the joint normally.
Extra bone may form at the edge of the joint. These bony growths are called osteophytes and can sometimes restrict movement or rub against other tissues. In some joints, especially the finger joints, these may be visible as firm, knobbly swellings.
The lining of the joint capsule may thicken and produce more fluid than normal, causing the joint to swell.
Tissues that surround the joint and help to support it may stretch so that after a time the joint becomes less stable.
The main symptoms of osteoarthritis are pain and sometimes stiffness in the affected joints. The pain tends to be worse when you move the joint or at the end of the day. Your joints may feel stiff after rest, but this usually wears off fairly quickly once you get moving. Symptoms may vary for no obvious reason, or you may find that your symptoms vary depending on what activity you are doing.
The affected joint may sometimes be swollen. The swelling may be hard and knobbly, especially in the finger joints, caused by the growth of extra bone. Or soft, caused by thickening of the joint lining and extra fluid inside the joint capsule. The joint may not move as freely or as far as normal, and it may make grating or crackling sounds as you move it. This is called crepitus.
Sometimes the muscles around the joint may look thin or wasted. The joint may give way at times because your muscles have weakened or because the joint structure has become less stable.
It’s still not clear exactly what causes osteoarthritis. We do know it isn’t simply ‘wear and tear’ and that your risk of developing osteoarthritis depends on a number of factors:
Age
Osteoarthritis usually starts from the late 40's onwards. This may be due to bodily changes that come with ageing, such as weakening muscles, weight gain, and the body becoming less able to heal itself effectively.
Gender
For most joints, osteoarthritis is more common and more severe in women.
Obesity
Being overweight is an important factor in causing osteoarthritis, especially in weight-bearing joints such as the knee and the hip.
Joint injury
A major injury or operation on a joint may lead to osteoarthritis in that joint later in life. Normal activity and exercise don’t cause osteoarthritis, but very hard, repetitive activity or physically demanding jobs can increase your risk.
Joint abnormalities
If you were born with abnormalities or developed them in childhood, it can lead to earlier and more severe osteoarthritis than usual.
Genetic factors
The genes we inherit can affect the likelihood of getting osteoarthritis at the hand, knee or hip. Some very rare forms of osteoarthritis are linked to mutations of single genes that affect a protein called collagen. This can cause osteoarthritis to develop in many joints at an earlier age than usual.
Two factors that may affect the symptoms of osteoarthritis, but aren’t a direct cause of it are the weather and diet:
Weather
Many people with osteoarthritis find that changes in the weather make the pain worse, especially when the atmospheric pressure is falling – for example, just before it rains. Although the weather may affect the symptoms of your arthritis, it doesn’t cause it.
Diet
Some people find that certain foods seem to increase or lessen their pain and other symptoms. However, your weight is more likely than any other specific dietary factors to affect your risk of developing osteoarthritis.
Managing the symptoms of knee osteoarthritis
Although there’s no cure for osteoarthritis yet, there are treatments that can provide relief from the symptoms and allow you to get on with your life. These include lifestyle changes, pain relief medications, physical therapies
Physical activity
Many people worry that exercising will increase their pain and may cause further joint damage. However, while resting painful joints may make them feel more comfortable at first, too much rest can increase stiffness and weaken muscles.
You shouldn’t be afraid to use your joints. If pain makes it difficult to get started with exercise, you could try taking a painkiller such as paracetamol beforehand. And if you feel you’ve overdone things a bit, try applying warmth to the painful joint – or if it’s swollen, applying an ice pack may help.
If you haven’t done much exercise for a while you might want to get advice from a physiotherapist. They’ll be able to help you work out a programme that works for you. The most important thing is to start gently and build up gradually.
There are three types of exercise you should try to include:
Range of movement exercises
These exercises involve taking joints through a range of movement that feels comfortable and then smoothly and gently easing them just a little bit further.
Strengthening exercises
These are exercises performed against some form of resistance to strengthen the muscles that move and support your joints. You could use light weights, a resistance band or try exercising in water.
Aerobic exercise
This means any physical activity that raises your heart rate and gets you breathing more heavily. This type of exercise burns off calories, so it can help if you need to lose a bit of weight. It can also improve your sleep and help to reduce pain.
Walking, cycling and swimming are all excellent forms of exercise for people with arthritis. Or you could try an exercise bike or cross-trainer. Walking laps in the shallow end of a swimming pool is also great for strengthening leg muscles.
Hydrotherapy or aquatic therapy pools are warmer than normal swimming pools. The warmth is soothing and relieves pain and stiffness, while the water supports your weight but still offers some resistance for muscle-strengthening exercises.
How to manage painful osteoarthritic knees
Warmth and cold
Applying a hot-water bottle, wrapped in a towel to protect your skin, or a wheat-bag that you heat up in a microwave can help to ease pain. An ice pack, again wrapped in a towel to protect your skin, often helps to reduce swelling and discomfort. Ice can be applied for up to 20 minutes every couple of hours.
Splints and other supports
There’s a range of different splints, braces and supports available for painful joints. These can be particularly helpful if osteoarthritis has affected the alignment of a joint. It’s best to seek professional advice from a physiotherapist before choosing one, so you can be sure it’s suitable for your needs.
Footwear
Choosing comfortable, supportive shoes can make a difference not only to your feet, but also to other weight-bearing joints including the knees, hips and spinal joints. In general, the ideal shoe would have a thick but soft sole, soft uppers, and plenty of room at the toes and the ball of the foot. If you have particular problems with your feet, then it’s worth seeing a podiatrist for more specific advice.
Walking aids
If your leg sometimes ‘gives way’ then ask a physiotherapist to show you some exercises to strengthen the muscles in your knee and hip. Whilst you improve your strength a stick may help you feel less afraid of falling. When held in the opposite hand, it can also help to reduce pressure on a painful knee or hip. It’s best to get advice from a physio as your reason for using a stick will determine which side you should use it on.
Pacing yourself
If your pain varies from day to day, it can be tempting to take on too much on your good days, leading to more pain afterwards. Learn to pace yourself. If there are jobs that often increase your pain, try to break them down, allow time for rest breaks, and alternate with jobs that you find easier. Or think about other ways of doing a job that would cause less pain. It may help to keep a diary - jot down what you have done that day and how you felt later in the day and the next morning. It may give you an insight into what flares up your osteoarthritis.
Caring for yourself
The emotional effects of arthritis can have just as much impact as the physical symptoms. Severe or long-term pain that affects your daily life and possibly disturbs your sleep can affect your mood. From time to time, your arthritis may get on top of you. If you’re feeling low, talk to your GP, who can signpost you to the appropriate services. You can also call the Versus Arthritis helpline on 0800 5200 520, who will listen and offer emotional support.
Taken from Versus Arthritis and GLAD program