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

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? 

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

4 exercises to strengthen your knees

Knee pains and pains in the joints are not restricted to a certain age group anymore. Younger people of today face this problem too. To stay active all your life and escape the severe aches associated with weakening of muscles, joint pains or arthritis, you must start now. The only way to keep your knees fine and working is to exercise. 
4 moves that help you strengthen your knees.
1. Leg lifts (inner thigh) - lie on any one side, lay your head on the arm of the side below you. Make sure this hand is straight above your head, touching the ground. Keep your legs straight, one above the other. Lift the leg on top a few inches above, hold for few seconds and bring it back. Do this for 10 times and then with the other leg, on the other side. This exercise strengthens your inner thighs, eventually strengthening the knees.
2. Hip raises: lie flat on your back, your shoulders touching the ground. Bend your legs comfortable, your feet resting firmly on the ground. Raise your hips and thighs so that from your head to feet, you form an angle. Wait in this position for about 10 seconds, lower your hip until it touches the ground. Repeat for ten counts.
3. Lunges: stand straight. Take a step ahead with your right leg. Left leg remains in its place. With your back straight, bend your knees so that both are at 90 degrees. Go back to standing position; take your right leg back to where it was. Do the same step with your left leg. Repeat both sides ten times.
4. Bent leg extensions: this is pretty easy and all that you need to do it sit on a chair comfortably, with your back straight first. Your feet firmly flat on the ground in front of you, lift the right leg straight extending to the front. Make sure your thighs stay on the chair. Bring your leg back to the original position, firmly planted on the ground. Do the same with your left leg. Repeat 10 times on both sides.
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The Only 4 Moves That Strengthen Your KNEES

Knee pain or injuries are very common and have numerous causes. Knee pain can emerge from delicate tissue wounds like ligament sprains and muscle strains. Bone conditions like knee joint pain, Osgood Schlatters, and biomechanical dysfunction can also cause knee pain. Treatment can include basic knee mobilization techniques, taping, massages or knee strengthening exercises completely through a careful recovery method after knee replacement or reconstruction.

Physiotherapy can help you overcome the pain and increase your strength and flexibility. A physiotherapist can suggest you a number of treatments and also help you understand your issue and get you back to your everyday routine. Physiotherapists are said to be successful in getting rid of the source of the knee pain by diagnosing a cause. This includes tightness around the knee and treating it with stretching and exercises.

Following are some of the exercises a physiotherapist might generally recommend for knee pain:

Hamstring stretch: Stretching keeps you flexible and increases your scope of movement, or how far you can move your joints in different directions. It additionally helps you reduce your chances of injuries and pain. Continuously warm up with a five minute walk first. Lie down when you are prepared to stretch your hamstring. Circle a bed sheet around your right foot, use the sheet to pull the leg up and hold for twenty seconds and then lower the leg. Repeat twice and switch legs.
Calf stretch: Use a chair for balance. Bend your left leg. Step back with your right leg and gradually straighten it behind you. Press your left heel toward the floor. You should feel the stretch in the calf of your back leg. Hold for 20 seconds. Repeat twice and then switch legs.
Straight leg raise: It helps build muscle strength to give support to the weak joints. Lie on the floor. Twist your left knee, foot on the floor. Keep the right leg straight, toes pointed up. Tighten your thigh muscles and raise your right leg.
Quad set: With these, you don't raise your leg. Just tighten the thigh muscles, also called the quadriceps, of one leg at once. Begin by lying on the floor. Keep both legs on the ground, loose. Flex and hold the left leg tense for five seconds and then relax. Do three sets of ten repetitions. Switch legs after every set.
Cushion squeeze: This move strengthens your legs from the inside so that they can support the knees. Lie on your back, both knees facing inwards. Place a cushion or a pillow between the knees. Press your knees together, squishing the cushion between them. Hold for five seconds and then relax. Do three sets of ten repetitions. Switch legs after every set.
Heel raise: Stand tall and hold the back of a seat for support. Lift your heels off the ground and rise on the toes of both feet. Hold for three seconds. Gradually lower both heels to the ground. Do three sets of ten repetitions. 

Knee Pain - How Physiotherapy Can Heal Knee Pain?

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

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