Knee replacement can be extremely painful. Previously, opioids or narcotics were administered for pain relief. But excessive addition of opioids is not exactly effective for controlling pain. 

Multimodal pain management has become an important part of the perioperative care of patients undergoing total joint replacement. The principle of multimodal therapy is to use interventions that target several different steps of the pain pathway, allowing more effective pain control with fewer side effects. Many different protocols have shown clinical benefit. The goal of this review is to provide a concise overview of the principles and results of multimodal pain management regimens as a practical guide for the management of joint arthroplasty patients.

Multimodal denotes administering two or more than two types of medications that work with different mechanisms. The following are the techniques used:

Pre-operative Femoral Nerve Block: Prior to the surgery, a catheter is placed beside the femoral nerve for blocking it. This nerve is located in the upper thigh. Medication is delivered through the catheter for the nerve to be numbed for 24 hours. Thus, pain signals to the brain are blocked. This method reduces the use of narcotics and the consequent side effects.

Patient Controlled Analgesia (PCA): This method is also known as  Pain Pump . An intravenous pump is used to administer pain relief medications, such as oxymorphone or morphine, after the surgery. The control button of the machine could be pressed, by the patient for 6 to 10 times per hour. The machine is used for two post-operative days.

Oral Medications: The oral medications include Non-Steroidal Anti-Inflammatory drugs or NSAID; such as Celebrex which is similar to aspirin, structurally. Alternatively, acetaminophen, such as Tylenol or its equivalent composition, can also be used.

Acetaminophen: It acts on the Central Prostaglandin Synthesis and relieves the patient of pain through multiple mechanisms.

Epidural Analgesia: It produces lower pain scores and involves less time for achieving physical therapy goals. However, this is subject to side effects such as dizziness, urinary retention and itchiness.

Gabapentinoids: These medications include membrane stabilizers such as Gabapentin and Pregabalin.

The objective of multimodal treatments is to provide quick relief to the patient and immediately so. Earlier the rehabilitation, more successful will be the knee replacement surgery.

Multimodal Pain Relief After Total Knee Replacement

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

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!

The knee is the largest joint in the human body and is a complex structure formed of bone, muscle and cartilage. Development of pain in the knees can be caused by numerous factors such as aging, injuries, diseases, dietary deficiencies, etc.

Arthritis is the most common cause of knee pain and usually affects the elderly and aged. It occurs due to an inflammation of the joint and causes pain, swelling, redness and inflexibility of the knees.

What are the factors that determine treatment method?

Diagnosis for knee pain varies from patient to patient as each case is different and must be approached differently. Some of the factors that determine the treatment method are as follows:

- Cause of the problem
- Nature and intensity of pain
- Age of the patient
- Medical history of the patient
- Diet and lifestyle of the patient

There are a number of different types of arthritis which can affect the knees in different ways and, consequently, require different types of treatment methods.

What are the various treatment methods for knee pain?

1. Conventional Remedies - These are used in case of conditions that are not too severe or chronic. It includes keeping on bed rest, using an ice pack, taking a painkiller and anti-inflammatory medicines, wearing knee braces, etc.

2. Physical Therapy - There are many stretching and strengthening exercise routines that help alleviate knee pain and treat the condition. Recovery is achieved by making the muscles around the knees stronger and increasing stability and flexibility.

3. Injections to the Knees - A number of anti-inflammatory substances and supplements, as well as lubricants, can be injected into the knee joint which helps reduce pain and makes the joint more supple.

4. Stem Cell Therapy - This involves drawing platelets from the patient's blood and injecting it into the knee joint for repairing damage caused to ligaments, tendons or cartilage.

5. Surgery - Surgical procedures for treating knee pain include partial or complete knee replacements.



What kind of treatment does your knee pain require?

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 knees are one of the most vulnerable parts of your bodies. In case of strenuous or vigorous activities, knees are more prone to damage and injury than the other parts. Several of the knee tissues are fairly delicate and often are easily impaired. Among the other knee tissue injuries, meniscus tears are perhaps the most frequent. Meniscus is essentially a cartilage that protects and stabilizes the knee joints. However, an untoward twist or a strain can lead to a tear in the meniscus. Meniscus tears are a common phenomenon among athletes and sportsmen. They have been noted to be more recurrent in older individuals. 

Some of the early symptoms that indicate the onset of a meniscus tear are swelling and difficulty in bending or straightening of the leg. Sometimes a" locking sensation" in the knees also forebodes a torn meniscus. The inflammation potentially causes a lot of pain and irritation. While, it is fairly easy to ignore a meniscus tear for a normal knee injury, prolonged overlooking may only aggravate the pain and worsen the condition. The process of diagnosing a meniscus tear usually involves an mri scan and an x-ray examination, over and above a detailed evaluation of the wound.

Treating meniscus tears vary according to the extent of the injury. Depending upon the location and the depth of the tear, various cures can be tried. The healing process, however, depends upon other allied factors such as age, level of physical activities and one's medical history. An external and minor injury is easily mendable. Whereas, graver injuries are resolved through surgical means. The other non-operative means include certain prescribed medicines and specific exercises. Some of the recommended ways of battling a meniscus tear can be enlisted as:

1. Resting the knee by limiting the activities that involve excessive use of the legs or they may potentially strain the leg muscles.
2. Applying ice pack can significantly bring relief to the swelling and the pain in the injured knee. Doctors advice regular use for a duration of at least 15 days.
3. Compressing the knee using an elastic bandage or neoprene sleeve reduces the swelling in the knee.
4. Prescribed medicines in the likes of non-steroidal anti-inflammatory drugs can be effective remedies for a meniscus tear. However, one must mandatorily consult a doctor before consuming such medicines.

All About Torn Meniscus

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