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

Your knee is guarded and cushioned by a cartilage known as meniscus. A meniscus tear, therefore, is an extremely painful and discomforting situation. It occurs very frequently and has emerged as one of the most commonly occurring cartilage injuries. What makes a meniscus tear an extremely common phenomenon is the way it can tear that is all it takes is a twist of the knee for it to happen.

People involved in sports mostly face the brunt of this form of injury. The risk of getting meniscus torn increases with age and tends to occur at the slightest change of direction of movement. 

Symptoms 
Some of the symptoms of a torn meniscus are:
1. Pain and inflammation: it goes without saying that an internal injury of the cartilage or tearing away of it would inevitably result in extreme pain and inflammation near the knee.
2. Immobility: the extreme pain and inflammation, which follows will inevitably make it difficult to move. Since the pain occurs in the joint, you will have difficulty in walking and any forceful movement will only aggravate the pain.
3. Locking of the knee: locking of the knee refers to a situation when you are unable to move your knee. This occurs most commonly after you have your meniscus torn.

Treatment
Notwithstanding its frequency of occurrence, there are several ways, by which you can treat a torn meniscus. Some of the ways are:
1. Apply ice: in order to get some relief, applying ice is a suitable option. If you apply ice every day for some time, it wonders in reducing swelling and the consequent pain.
2. Use a bandage: in order to control the swelling, it is important that you cover your knee with an elastic bandage.
3. Change the posture: it is important that you keep the affected knee in an elevated plane, in order to ensure an efficient blood supply and a consequent relief from pain.

Some medical treatments
There are many things to consider when deciding how to treat your torn meniscus, including the extent and location of the tear, your pain level, your age and activity level, your doctor's preference, and when the injury occurred. Your medical treatment choices are:
1. Nonsurgical treatment with compression, elevation, and physical therapy. This may include wearing a temporary shoulder brace.
2. Surgical repair to sew the tear together.
3. Partial meniscectomy, which is surgery to remove the torn section.
4. Total meniscectomy, which is surgery to remove the entire meniscus. This is generally avoided, because this option increases the risk for osteoarthritis in the shoulder.
5. Whenever possible, meniscus surgery is done using arthroscopy, rather than through a large cut in the shoulder.

Symptoms and Treatment of Torn Meniscus

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

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?

Pain in the joints continues to bug mankind till this very day. There are different types of joint pains, which might occur all of a sudden, with no signs of receding. The most common of them all are arthritis, tennis elbow, frozen shoulder, back pain and repetitive muscular strain. These joint pains are sometimes impossible to diagnose properly by the regular modes of diagnosis. In those cases, resorting to the homeopathic mode of medication might be a good idea as it is a medication based on treating the actual cause of the disease and sustained use might result in complete remission of the pain.

Some commonly used homeopathic medications for pain in the joints are as follows:
1. Rhus Tox: This is the most commonly used in homeopathic preparation for severe joint pains, the symptoms of which include severe pain after relaxation, pain triggered by slightly wet weather and pain after walking or running for a long time.

2. Arnica Montana: When the symptoms are pain in every joint of the body resulting in body aches and pertaining injuries due to accidents, Arnica Montana serves as the perfect medication.

3. Actea Spicata: This medicine is primarily used as a remedy for pains in the small joints of the hands. The symptoms for which the medication can be implemented are rheumatoid arthritis in the joints of the finger and swollen wrists after usage of the hand.

4. Colchium: This medicine can be used in case of Rheumatoid Arthritis (inflammatory and chronic form of arthritis).

5. Bryonia Alba: This medication can work wonders if the symptoms include severe pain in the knee joints while walking, severe swollen joints and osteoarthritis (affects the flexible tissues present at the bone ends).

However, it is always advisable to take medication as prescribed by your doctor, as the potency and frequency can only be decided by your doctor.

Homeopathic Treatment for Pain in the Joints

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

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