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

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 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

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

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?

A meniscus tear is a common injury associated with the knee. The meniscus acts a defensive shield, providing a much-needed cushion to the knees, keeping it stable and injury free. Each knee joints contain two menisci located between the tibia and the femur. In this article, we will discuss important details related to meniscus tear to help you understand the injury better.

Facts related to a Meniscus Tear

A meniscus tear can affect all and sundry. However, sports persons (especially those associated with soccer, tennis, football, and basketball) and aged people are more susceptible to the condition.
As per Boston Children's Hospital, of late there has been a steady rise among children suffering from the meniscus tear.
Osteoarthritis may act as a catalyst, accelerating the chances of a meniscus tear.
In most of the times, a meniscus tear occurs when you exert immense pressure on the knee joints such as lifting a heavy object or suddenly standing up from a squatting position. With age, the meniscus is known to suffer from a natural wear and tear resulting in the injury.
As already mentioned, there are two menisci present in each knee joints. The one present inside the knee joint is called Medial Meniscus. Lateral Meniscus is the one present on the outer part of the joint.
Depending on the extent and severity of the injury, a meniscus tear may be
A minor tear: This is a small injury accompanied by mild pain and swelling which may last for not more than 2-3 weeks.
A moderate tear: The injury results in pain that are concentrated mainly around the center or the sides of the knee. The swelling goes from bad to worse over the next 2-3 days, with the person facing discomfort while bending their knee. The knee also stiffens. You may be relieved of the symptoms within a week or two but overusing the knee or twisting it may cause a relapse.
A severe tear: True to its name, your knee is the worst affected in this case. The cartilage tear may be such that the torn pieces get lodged in between the joint spaces causing the knee to lock, pop or even catch. A person experiences unbearable pain and discomfort along with stiffness and swelling (can be immediately following the injury or within 2-3 days). In the case of a severe meniscus tear, a person may not be able to straighten the knee at all (without treatment and medical intervention)
Treatment for a meniscus tear may be surgical or nonsurgical.
The nonsurgical treatment involves the application of cold compress on the affected area. The person needs to take ample rest exerting minimum pressure on the affected knee. Physiotherapy and strengthening exercise can go a long way in improving the condition. To reduce the pain and swelling, the doctor may prescribe painkillers and NSAIDs (Nonsteroidal Anti-Inflammatory Drugs). Keep the knee elevated. The use of elastic wraps may be helpful.

In extreme cases, surgery may help to treat the injury and the associated symptoms.

Facts About a Meniscus Tear!

Don't wait any longer, manage your ACL Reconstruction online with a Lybrate doctor today

Consult for ACL Reconstruction - Online and Easy!

FilterClear All

COMMON SPECIALITIES

COMMON ISSUES