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

Simple exercises for relief from knee pain

A lot of people suffer from knee pain, some hereditary, some due to injuries and some due to other reasons. Whatever be the reasons, the pain is very bothersome. 

Try the following exercises regularly to get relief from knee pain.

1. Leg lifts - sit straight on a chair with your feet firmly on the ground. Lift the leg for which the knee pains, until it is parallel to the ground. Hold for a couple of seconds and bring back to the initial position. Do 10 reps every day.

2. Knee bending - sit on a chair and keep a stool of same height as the chair in front of you. Place your knee on the stool, knee slightly bent. Slowly, straighten your leg and hold in the straight position for a couple of seconds before you release. Do 10 reps.

3. Leg straightening - stand straight and place the foot on a low platform. Bend down, place both your palms on the knee and slowly push it down until your leg is straight. Push only as far as it doesn't hurt too much. Hold for a few seconds and release.

4. Stretching - sit upright. Bring your leg towards your chest by bending the knee and keeping your hand above the ankle. Push your heel towards your buttocks. Release after a couple of seconds.

5. Chair pulling - stand straight near a door keeping your feet apart (shoulder-width), in front of a chair. Hold the knob of the door and slowly, sit back on the chair. Feel the pull in the muscles and go back to previous position after 2-3 seconds. Repeat.

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5 Only Exercises For Easy Relief From Knee Pain

Causes and symptoms of knee pain

Knee pain is characterized by a feeling of pain in the knee joint caused by injury or overuse. The knee joint consists of small bone structures, the kneecap, supporting ligaments and cartilage of the knee. This joint bears the full weight of the body, which makes it very vulnerable to injury.

Causes of knee pain

Knee pain is usually caused by injuries to the knee such as exposure to a direct force on the knee, abnormal twisting of the knee or falling on your knees. Some causes of knee pain are -

Knee strains and sprains - Overworking the knee joints can damage the tissues of the knee joint resulting in knee sprains and strains

Osteoarthritis - it is condition where the protective cartilage around the kneecap is damaged, resulting in knee pain

Bursitis - Excessive movement of the knee or kneeling down for extended periods can irritate the bursa (a fluid sac below the skin above the knee joint) that causes swelling and pain, thereby giving rise to this condition

Gout - This condition is characterized by the accumulation of uric acid in crystal form around the knee joint, causing inflammation and pain

Tendon disorders - Tendons connect the muscles to the bones, and overworking the knee can cause the tendons around the knee to become sore and painful

Kneecap dislocation - Injuries may cause the kneecap to shift out of its position, this causes swelling and pain in the knee joint

Symptoms of knee pain

Severe knee pain can restrict movements such as walking or standing. The symptoms vary according to the extent of the damage suffered by the knee. Most common symptoms of knee pain are problems in climbing stairs, inability to extend the knees, limping and swelling of the knee joint. In some cases, knee pain may also cause fever.

Causes and Symptoms of Knee Pain

Knee pain is a common phenomenon that plagues most of the people irrespective of their age. It can be the outcome of a torn cartilage or a ruptured ligament. Medical complications, such as infections, gout or arthritis (painful inflammation and stiffness of the joints) can also give way to knee pain. Minor knee pain can be eased by self-care remedies such as physical therapy or by putting on knee braces. However, few complications might demand surgical repair. Pain can be managed by the pain management specialists.

Tips to manage knee pain

1. Medications such as naproxen, ibuprofen and acetaminophen can be administered to help remedy knee pain.
2. You can seek relief by massaging your knees with ointments constituting of a number of agents such as capsaicin or lidocaine.
3. Keep away from your usual chores to prevent repetitive strains on the knees, thus, allowing the injury to heal as well as to stay safe from further damage.
4. Applying an ice pack in a towel can ease the inflammation and pain. But do not extend its usage for more than 20 minutes because that might harm the skin and nerves.
5. Compression bandages can inhibit fluid accumulation in the damaged tissues aiding knee alignment stability. Ensure that it is tight enough to render support to your knees without actually obstructing blood circulation.
6. To pacify the swelling, try resting your sore leg on a pillow (the idea here is to keep the affected leg elevated to reduce further pain).
7. Shed off your extra pounds as being overweight increases chances of other disorders such as osteoarthritis.
8. Go for regular work outs to enhance and maintain the flexibility of your muscles as excessively weak or abnormally tight muscles can contribute to injuries. Be smart while choosing your method of exercise based on the condition you are suffering from.

Knee Pain - 8 Effective Ways to Manage it

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

Meniscus refers to the soft ligament in your knee joint, which cushions your bones and protects it from wear and tear. It is vital for the fulfilment of regular activities and the health of your bones. Thus, a damage to the meniscus can be extremely painful. Meniscuses are exposed to injuries and shocks in case of rigorous activities and this is a fairly common syndrome faced by athletes and sports person. It can cause a substantial amount of hurt and generally impairs movement to a large extent. It potentially gets worse as the inflammation sets in and the swelling grows. The risk of a meniscus tear increases with age. The treatment for a torn meniscus depends upon the degree of tear. While minor tears repair on their own, for graver injuries, the following therapies may prove effective.

Symptoms of a torn meniscus
1. You might be able to experience a popping sensation in your knee joint
2. Stiffness and swelling
3. You will experience pain, especially while you are trying to twist your knee
4. You might not be able to straighten your knee completely

The treatment for a torn meniscus depends upon the degree of tear. While minor tears repair on their own, for graver injuries, the following therapies may prove effective:
1. Light exercises: For slightly serious meniscus tears, there are certain knee exercises which are recommended to abort any further damage as well as to repair the wound. Limiting the activities which might exert pressure on the knees, getting adequate rest, using ice packs and wearing neoprene sleeves always aid in recovery.
2. Anti-inflammatory medications: Often, meniscus tears are cured with the help of anti-inflammatory drugs like Ibuprofen. They not only reduce pain but also enable the mending of the injured tissue. However, one needs to be aware of a few side effects which often become natural repercussions of such drugs. Possibility of ulcers and bleeding get increased by leaps and bounds on the intake of such drugs.
3. Surgery: For all other forms of meniscus tears, if healing is not obtained through non-surgical methods, the only option available is that of surgery. Such a situation arises when the pain becomes unbearable and the meniscus tear does not respond favorably to superficial treatments. These surgeries are less complicated than replacement surgeries. They usually do not involve any life threatening hazard and cautious and efficiently conducted surgeries release all pains and handicaps.

Torn Meniscus Knee Treatment - Exercise, Anti Inflammatory & Surgery

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