Why does PAIN occur? Understand the Mechanism of Pain

Pain is an unpleasant and distressing physical sensation caused by disease or injury, which induces hurt and anxiety in those suffering from it.
There are many different manifestations of pain, ranging from short term (acute pain) to long term (chronic pain). Other classifications include pain in the internal organs (visceral pain), injured tissue (inflammatory pain), nerves (neuropathic pain), etc.

The reason for the occurrence of pain depends on the cause and kind of pain being experienced. In most cases, pain acts as a warning sign that the body has been afflicted by a disorder of some sort, which may have arisen due to internal sickness or external wounding. Acute pains are generally cured on their own through rest or simple medication. Chronic pains, on the other hand, are more complicated in nature and the treatment requires more elaborate diagnosis.

The mechanism of pain

Pain is an extremely personal and subjective experience and affects each individual to varying degrees. The pain signals, which can arise in any part of the body, travel through the spinal cord to the brain along thousands of specialized nerves and nerve fibres. In the brain, it is processed in the centres associated with anxiety, emotions, memory, appetite, etc. Signals and pain inputs are then returned from the brain to the spinal cord, which may heighten or diminish pain.

In some cases, pain may also be induced by damage to the brain and spinal cord, which happens after a stroke.
A constant barrage of pain signals may cause the cells at the end of nerve fibres to become over-sensitized. This is known as 'wind-up' and is one of the most common causes of chronic pain that occurs even though the root of the problem has been identified and treated.

The causes and effects of pain differ from case to case depending on the signals received by the brain and its interpretation. It affects the individual's day to day activities and if persistent, can also have a harmful impact on mental health and psychosis. Pain is always handled, diagnosed and treated differently in all patients by drawing out the best possible solution to the problem.





Why does PAIN occur? Understand the Mechanism of Pain

Your knee is a very complex structure consisting of bones, ligaments, cartilage, tendons, muscles and meniscus. Most people encounter knee pain at some point in their lives. If your knee pain is chronic in nature, then it may last for a prolonged period.

Many causes may be responsible for your knee pain. Some of the causes are stated as follows:
1. Your knee is very much prone to injuries. Knee injuries may happen due to accidents, falling down carelessly or while playing sports. The most common knee injuries that may be the cause for your knee pain are mentioned as follows: 
a) Fractures may cause you to feel pain in the areas of your knee bones.
b) Anterior Cruciate Ligament injury (ligament injury caused by twisting and a sudden motion) or Medial Collateral Ligament injury (injury to the tissue in the insides of your knee) is very common to sportspersons and may be the reason for severe knee pain.
c) Sometimes your knee bones may get dislocated from their usual alignment. This can also make you experience severe knee pain.
d) Ligament injuries, meniscus tear or tendon tear can also be responsible for your knee pain.

2. Sometimes pain in your buttock or foot region can also result in mild knee pain.

3. At times chronic problems like osteoarthritis that affects the cartilage can cause the problem of knee pain. Other chronic problems like Gout, rheumatoid arthritis can also cause severe knee pain.

4. Being overweight can also result in knee pain.
The symptoms of knee pain may be different in each case. The most common symptoms are mentioned below:
a) Stiffness of knee
b) Swelling of your knee
c) You may also feel unstable
d) Difficulty in walking or bending of your knee.
e) You may notice redness in your knee area.

Knee pain must not be ignored. It is highly recommended for you to seek advice from an orthopedic as soon as you encounter any of the above mentioned symptoms.

Suffering from Knee Pain - Know What Causes it? 

Calcium is known for its role in maintaining the bone health, from keeping your teeth stronger to normal functioning of the cells.  But there are various factors, which lead to a deficiency of calcium in the human body and paves the way for several complications.

Here are the top three signs that indicate you are suffering from calcium deficiency.

Difficulty in sleeping: Sleep is essential for your bone health and calcium is directly associated with your sleep cycle. The level of calcium in your bones rises and falls when you are asleep and it reaches its peak when you are in deep slumber. This indicates that when you are unable to sleep properly, it is a warning sign of calcium deficiency. There are various researches that have confirmed, that by increasing the level of calcium, it is possible to restore the normal sleep cycle of an individual. This is also related to the role that calcium plays in the production of a sleep hormone called melatonin. When the calcium content in the body is really low, this hormone is not produced, thus, making it difficult for a person to sleep.
Difficulty in losing extra pounds: Yet another frustrating aspect of any individual s life is the inability to shed off excess pounds. This issue is also linked with the lack of calcium supply in the body. The calcium that s stored in the cells assists in the processing and storage of fat. So the fat cells with high calcium content burn faster, making you lose weight. Thus, if you have trouble losing weight in spite of having a well-regulated diet and regular workout, it s a sign that you are suffering from low calcium.
Paresthesia: Though this ailment is not much heard of, it could be a sign of calcium deficiency. Paresthesia is a nervous disorder, which causes tingling sensation, tremors, numbness and loss of sensitivity. It could also lead to poor concentration, amnesia, confusion, hearing impairment, twitches and other physical as well as neurological impairment. This is because low calcium in the blood is connected with the health of your nerves.
The deficiency of calcium can manifest itself in different intensity, ranging from the non-existent to minimal to severe levels. Chronic calcium deficiency can lead to life-threatening diseases like rickets, osteopenia, and even osteoporosis. Therefore, you shouldn t ignore these signs and consult an expert without delay.

Calcium Deficiency - 3 Signs You are Suffering from it

It is normal and alright to feel pain in the knees occasionally after a physical activity or prolonged walking. However, it is a serious cause of concern if the pain is experienced every now and then. Not responding to your knee pain for long can lead to the extreme disability. Knee pain does not crop up in a day and it may surprise you when it first appears. 

Initially, you may notice slight pain and discomfort. If you have identified knee pain at this level, managing it is easy. You can perform different exercises to prevent pain from occurring. If the pain severe, you need to go consult a doctor, who will then help identify the real cause of pain. The following exercises, along with medications, can help you overcome knee pain and restore the mobility of the joint.

Stair Step ups: Choose a comfortable stairway. Place your hand on the wall or banister. This is to ensure that you are balanced. Your left foot should be on the taller step. Your right foot should be on the ground. Stay in this posture for a second. Now, step back, and bring left foot to the right foot. Repeat this 6 times. Reverse the legs and continue doing for 6 times. If you want to take rest between the steps, feel free to do so.
Ups and Downs: You need an armless chair that is strong. Sit on the edge but comfortably. Your arms should be at your side, relaxed and loose. Sit erect and your feet should be flat. If you feel you need balance, and then cross your arms. Start standing up. This should not be instant but deliberate, controlled, and gradual movement. Stand slowly up to the full height, and hold on for 2 seconds. Again sit down. Repeat this 5 times.
Straight Leg Raise: This can be a part of your everyday exercise regime. This is a strengthening workout that does not put too much effort on the knees. Lie down on your back. One leg should be straight on the ground and the other one should be bent. Now, slowly lift the leg that is straight, and the toes should point upward. Raise your leg up to 30 degrees, but you can start with 15 to 20 degrees in the initial stage. Repeat 15 times and perform at least 3 sets of this exercise. Keep alternating legs. This workout strengthens the knees, thigh muscles, and the ankle joints, thus offering multifold benefits.
Wall Hamstring Stretch: Hamstring muscles too can be the cause of knee pain and discomfort. To strengthen the hamstring muscles and alleviate knee pain, this exercise helps a lot. Lie down on the floor flat. Your feet should be flexed. Choose a space that is close to a wall, or a sturdy table. Your right leg should be propped on the wall or table. If you don t prefer any, a resistance band is a good alternative. When stretching, you can find your flexibility level and when you feel that you have reached the deepest point, start relaxing. Keep alternating contracting and relaxing every 5 seconds. After 10 to 15 sets, you can try the same with the left leg.
Knee Rolls: Use an exercise mat or a carpet that is cozy. Lie on your back. Bend the knees, and ensure your feet are flat. Your arms should be stretched on the sides. Look at the ceiling, and hold the knees together. In the same posture, slowly roll the knees towards the right. When you feel a gentle twitch or after 5 seconds, move to original position. Then lower the knees to the left. Hold and release. For each side, repeat 10 times.
These exercises strengthen the knees and improve the quality of life by bidding bye to the pain. Understanding that these are magic remedies that work overnight is the key to stay focused and keep going without quitting.

Exercises That Can Help Relieve Knee Pain!

Knee is a hinge joint where the lower leg bone tibia meets the thigh bone femur. During osteoarthritis, cartilage or ligament defects and degenerative arthritis, knee replacement surgery is recommended world-wide to get relief from extreme pain. Knee replacement surgery, also known as knee arthroscopy, is a surgical procedure, in which the affected knee joint is replaced with synthetic material. The most likely candidates for total knee replacement are the patients with severe destruction of the knee joint coupled with progressive pain and impaired function.

Modern technological advances have made computer assisted knee replacement surgery extremely popular around the globe. In this surgery, the surgeon is assisted by a computer to remove the optimum amount and angle of the bone, which otherwise is done by inspecting manually. This is an excellent example of surgery through small incision and it eliminates the chances of human error. A perfect alignment and balance is achieved and hence longevity is also increased to 20 - 30 years. Knee replacement surgery is also specific to gender as the anatomy of male and female patients is different.

There are many types of knee replacements, most common being the total knee replacement or Total Knee Arthroplasty. In addition, there is partial knee replacement, bilateral knee replacement, revision knee replacement and knee arthroscopy.

In knee replacement surgery, the worn out surfaces of joints of knee are replaced with artificial implant of plastic and metal. The lower end of the femur bone is removed and replaced with a metal shell. The upper end of the lower leg bone (tibia) is also removed and replaced with a channelled plastic implant with a metal stem. A plastic ball is also added under the kneecap depending on its condition. These artificial components are commonly referred as prosthesis. The design of these highly flexible implants replicate knee, with the rotating knee replacement implants assist in backward and forward swing of the legs.

Patients whose knee joints have been damaged by either trauma or progressive arthritis should consider total knee replacement surgery. Post-surgical hospital stay after knee joint replacement is usually three to five days. The surgery has a very high success rate and shows dramatic improvement after a month. This improvement is most notable one month or more after surgery. The pain caused by the damaged joint is reduced significantly when the new gliding surface is constructed during surgery. Initially, patient will walk with the help of a walking aid until the knee is able to support full body weight. After six weeks, patient can walk comfortably with minimal assistance. Patients with artificial joints are prescribed to take antibiotics during the course of any elective invasive procedures including dental work. Physiotherapy is an essential part of rehabilitation and it will increase the muscle strength and patient can enjoy most activities, except running and jumping.

Knee Replacement

A meniscus tear is a common injury associated with the knee. The meniscus acts a defensive shield, providing a much-needed cushion to the knees, keeping it stable and injury free. Each knee joints contain two menisci located between the tibia and the femur. In this article, we will discuss important details related to meniscus tear to help you understand the injury better.

Facts related to a Meniscus Tear

A meniscus tear can affect all and sundry. However, sports persons (especially those associated with soccer, tennis, football, and basketball) and aged people are more susceptible to the condition.
As per Boston Children's Hospital, of late there has been a steady rise among children suffering from the meniscus tear.
Osteoarthritis may act as a catalyst, accelerating the chances of a meniscus tear.
In most of the times, a meniscus tear occurs when you exert immense pressure on the knee joints such as lifting a heavy object or suddenly standing up from a squatting position. With age, the meniscus is known to suffer from a natural wear and tear resulting in the injury.
As already mentioned, there are two menisci present in each knee joints. The one present inside the knee joint is called Medial Meniscus. Lateral Meniscus is the one present on the outer part of the joint.
Depending on the extent and severity of the injury, a meniscus tear may be
A minor tear: This is a small injury accompanied by mild pain and swelling which may last for not more than 2-3 weeks.
A moderate tear: The injury results in pain that are concentrated mainly around the center or the sides of the knee. The swelling goes from bad to worse over the next 2-3 days, with the person facing discomfort while bending their knee. The knee also stiffens. You may be relieved of the symptoms within a week or two but overusing the knee or twisting it may cause a relapse.
A severe tear: True to its name, your knee is the worst affected in this case. The cartilage tear may be such that the torn pieces get lodged in between the joint spaces causing the knee to lock, pop or even catch. A person experiences unbearable pain and discomfort along with stiffness and swelling (can be immediately following the injury or within 2-3 days). In the case of a severe meniscus tear, a person may not be able to straighten the knee at all (without treatment and medical intervention)
Treatment for a meniscus tear may be surgical or nonsurgical.
The nonsurgical treatment involves the application of cold compress on the affected area. The person needs to take ample rest exerting minimum pressure on the affected knee. Physiotherapy and strengthening exercise can go a long way in improving the condition. To reduce the pain and swelling, the doctor may prescribe painkillers and NSAIDs (Nonsteroidal Anti-Inflammatory Drugs). Keep the knee elevated. The use of elastic wraps may be helpful.

In extreme cases, surgery may help to treat the injury and the associated symptoms.

Facts About a Meniscus Tear!

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