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Do your knees feel wobbly or are your legs giving way? If you answered yes to either one of these questions, then you might be experiencing a condition known as Arthrogenic Muscle Inhibition. That’s a fancy way to say that the muscle weakness is caused by joint arthritis, injury and pain.
As a protective mechanism, the nervous system has reflexes that shut down muscle activity in order to protect the injured body part. In the case of an injured knee, ankle or other joint, doctors have observed significant muscle deactivation in response to joint swelling, pain, and arthritis. 1
In response to knee injury, surgery or arthritis, the quadriceps muscles become very weak. Even the hamstring and buttocks muscles are weakened in order to protect the knee. In response to an ankle injury or other painful process, the lower leg muscles in the calf start to lose their power. Researchers are even able to duplicate this arthrogenic muscle response by simulating joint swelling a...
Getting your newly replaced knee joint moving may be easier said than done. Sometimes the knee just stiffens up, frustrating both the patient and provider. It helps to know why the joint is stiff--and what can be done about it. Is it something the patient did, or did something happen during or after surgery to make the knee stiff? Patients themselves may have something to do with it. But these factors are not always in their control. For example, some people naturally form extra scar tissue after an injury or surgery. When this occurs following knee joint replacement, the added scar tissue can cause the knee to become stiff. And a tight knee that isn't moving fully before surgery will have a greater chance of being stiff with limited movement afterward. Patients can control how readily they do their exercises and therapy after surgery. If they choose not to comply, their chances of having stiff knees are greater. Loosen up. Not all problems with stiffness are due to patient factors. Err...
The local weather forecast calls for pain increasing over the next five days and tapering off towards the end of the week. Sound familiar? Many people who have arthritis are very familiar this forecast and know that weather effects pain severity. In fact, many people know what the weather is doing just by how a joint feels. Pain, stiffness and swelling can be as accurate at forecasting the weather as a meteorologist. And those who live in certain climates know exactly how painful some climates can be. What do scientists have to say about this weather phenomenon? Are the rumors true? Does joint pain forecast the weather?
Ouch, it's cold outside. Just looking at temperature, one can easily conclude that l ow temperatures increase pain not only in a joint, but everywhere. Knee pain , rheumatoid pain, and osteoarthritis pain all show consistent increases in severity has the mercury plunges. The reason for this phenomenon probably has something to do with nerve conduction slowing in t...
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