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

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

Like other knee injuries, the torn meniscus can be painful and debilitating. But unfortunately, it is quite common. In fact, a torn meniscus is one of the most frequently occurring cartilage injuries of the knee.

What is Meniscus? 

A meniscus is a C-shaped piece of cartilage present in the knee that acts as a cushion and stabilizes the joint. Its function is to protect the knee from wear and tear. Two menisci are present in each of the knee joints. They can get damaged or torn during activities, which puts pressure on the knee joint or may rotate it.

What causes a meniscus to tear? 

A quick stop or vigorous twist may force the femur to crumble into the top of the tibia. It may potentially tear out the cartilage of the meniscus. It may also occur while doing deep squats or kneeling, especially while lifting a heavyweight. Athletic activities often result in this knee injury, particularly in the sportspersons such as footballers and hockey players. Sports that involve sudden stopping and pivoting such as tennis and basketball may also result in the torn meniscus. Meniscus tears are a special risk in elder people as the cartilage weakens and wears thin over time. As the age progresses, worn tissues become more prone to tears. Just a clumsy twist while getting up from the bed or chair is sometimes enough to cause a tear in case of weakened menisci due to aging.

Symptoms of a meniscus tear: One may hear a popping sound around the knee joint when a meniscus tear occurs. Initially, the pain may not bad but once the inflammation sets in, the knee starts hurting quite a bit. The knee may get stiff or locked. It may become difficult to move the knee in a full range of motion.

Diagnosis of a Meniscus Tear: Diagnosis of a meniscus tear starts with the patient s history and a physical examination. The doctor inspects, palpates, and applies specific diagnostic maneuvers to diagnose a torn meniscus. The McMurray test is used to make the clinical diagnosis of a meniscus tear. The doctor flexes the knee, then straightens and rotates it to put tension on a torn meniscus. The movement will cause a clicking sound if a meniscus tear is present in the knee. A magnetic resonance imaging (MRI) scan is the preferred choice to diagnose the torn meniscus. This technique allows the doctor to evaluate the knee cartilage in a more detailed way.

Treatment of Torn Meniscus: The treatment of a torn meniscus depends on the severity and the location of the tear. If the size of the tear is small and the location is on the outer end of the meniscus, a surgical repair is usually not required. Give rest to your knee as much as possible. The doctor may advise using crutches to avoid putting weight on the legs. Icing the knee every three to four hours for 30 minutes is recommended for this injury. You may use compress bandage to reduce the inflammation. Try to keep the knee in an elevated position to reduce the swelling. NSAIDs may be prescribed to get relief from pain and inflammation. If the symptoms persist, the doctor may advise for an arthroscopic surgery.

Torn Meniscus - What Exactly Is It? 

Three Ways to Protect Your Knees

The knee is known as the largest and one of the most complex joints in the human body, and also one of the most vulnerable, as it supports the weight of the entire body. The knee joint is made up of several elements including the knee cap, meniscus, connective tissue, tendons, ligaments, cartilage, and muscles. Damage to any part of the knee can cause chronic pain. So how can you protect your knee from damage and injury? Take a look at these three points!

Dealing with Load: Weight is a big one. Carrying around extra pounds and kilograms can be detrimental for your knees in the long run. Your knee is not equipped to handle the excessive weight. It already supports three to five times your weight when you get up and walk around or indulge in some mild jogging. One must be careful of those extra pounds to take the load off the knee and keep it from falling prey to damage.

Exercise: Moderate to intense exercise is prescribed for one and all. This, of course, depends on one's overall health and age. If you are already suffering from joint pain, then you may want to go easy on the exercise with a focus on building muscle strength and foundation. If you are healthy, then some amount of daily exercise as a routine will keep those knees in prime working condition and well lubricated as well. Inactivity and a sedentary lifestyle can affect the knees very badly.

Do not Ignore: Warning signals such as chronic or acute knee pain should not be ignored. Remember to see a doctor or an orthopaedic specialist to find out if you have contracted an infection or if you may have suffered a fracture due to an injury. Also, it is important to take a bone density test regularly, especially after the age of 40 or for women going through menopause, as this will point to any deficiencies and even warn you in case there is any trace of osteoporosis.

Rest, exercise, and food should be kept in fine balance for a healthy body. These are a few measures that one can take to keep knee pain at bay. Yet, it is also advisable to speak with a doctor at length regarding measures to protect your knees.

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Three Ways to Protect Your Knees

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

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

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