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...
Definition A weak pulse means you have difficulty feeling a person's pulse (heartbeat). An absent pulse means you cannot detect a pulse at all. See also: CPR Alternative Names Weak pulse; Absent pulse Considerations An absent or weak pulse may affect all or one part of the body. If a pulse cannot be detected by a non-medical professional, it doesn't always mean there is a problem. Sometimes, it can be hard for a non-medical person to detect a pulse in certain areas. Common Causes Cardiac arrest (lack of an effective heartbeat) Improper technique used to feel for the pulse Normally weak pulse that is difficult to measure without proper instruments Shock
Muscle pain happens to most people. After a rigorous workout, muscles can be sore for days. That’s normal muscle pain. Abnormal muscle pain is a persistent pain that does not go away with rest. The pain is deep and often unbearable. Further investigation is needed for abnormal muscle pain.
The first investigation step is laboratory tests. Pain does not accompany all muscle diseases, but an elevated creatine phosphokinase (CPK) usually does. The CPK enzyme is found in the skeletal muscles as well as the heart and brain. Non-painful causes of an elevated CPK include muscular dystrophy, dementia and motor neuron diseases. Painful conditions associated with an elevated CPK include sickle cell disease and polymyositis . Besides pain, other symptoms might provide diagnostic clues like muscle weakness which typical in polymyositis. If anemia is present, then sickle cell disease is more likely. Both polymyositis and sickle cell disease can lead to the most severe form of muscle di...
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