Blog Entries With Tag: Knee
Posted: Apr 14, 2013
Thrombosis prevention after total hip and kneereplacement: What are the advantages or disadvantages of apixaban (Eliquis)?
Apixaban (Eliquis trading name) is authorized since May 2011 for the prevention of thrombosis after kneereplacement surgery to replace a hip or knee joint.
After the insertion of an artificial hip or knee joint is increased in the blood vessels for a time the risk of clots. These clots (medical: thrombus) may then be washed away with the blood flow and block at another location in the body of a blood vessel. Most clots but are metabolized by the body so quickly that they do not cause any discomfort. Sometimes, however, occur in the weeks following joint replacement surgery symptomatic "thromboembolism," for example in the lungs and inside of the leg arterial system (known as deep vein). For prevention of thrombosis, leading to discomfort, there are several medications available. With apixaban in May 2011, another product has been authorized. How is apixaban?
Apixaban is taken twice daily as a tablet (2.5 mg), the first time. Within 12 to 24 hours after kneereplacement surgery After a hip replacement, it should be taken 32 to 38 days after a kneereplacement 10 to 14 days. Related posts:
Posted: Feb 6, 2013
I am an athletic, 6'3', 19 year old male, and have played sports all my life. I was diagnosed with OCD in my left knee on the medial side at the age of 15, but I can remember having pain that would come and go since I was 11. I learned to run with my bad knee and could perform at a high level in basketball and other sports as long as I didnt over-do it. In the summer between my junior and senior year in highschool, a fragment broke off in my left knee. The pain did not seem to be any worse than before but I needed surgery to remove the fragment. As if that wasn't disheartening enough, on the first day of my senior year I noticed a dull pain in my right knee as I was walking to class. The pain got progressively worse and upon visiting the doctor for xrays he found that I had the same issue on my right knee, in the same location. I ended up getting a scope on the left knee to remove the fragment and smooth over the bare spot left behind. I was on crutches for 6 weeks with little to no pain and the knee definitely felt better. Upon trying to return to normal activity, I quickly learned that my right knee, all the sudden, was my limiting factor. This was extremely frustrating and confusing to me because my right knee literally never experienced any pain until that first day of my senior year. I had to stop playing sports and ride the bike for exercise. Anyways, fastforward one and a half years and the problem in my right knee has not gotten better with conservative treatment. My gait is not strong and efficient like it used to be and I've lost a lot of my explosiveness and leverage. The way that I compensate when I run has caused me to develop ankle pain that I suspect is early signs of ankle OCD. I have made the decision to get surgery on my right knee and am trying to decide the best method. My fragment is still partially attached so I am leaning towards fixation with screws or pins. If any body has had this procedure, any other procedure, or has had any experience with this challenging condition, please talk to me.
Related posts:
Posted: Jan 11, 2012
Testimonial from Iraqi National on Avascular Necrosis in his Hip Joints
Mr. Azhar, a 35 year old male was suffering from Avascular Necrosis in his hip joints. Due to debilitating pain and stiffness he was unable to perform his day to day activities.
A high demanding patient.
Un-cemented Total Hip Replacement was performed using 36 mm large ceramic head on metal acetabular liner done. (suffering from AVN & ARTHRITIS, Rt hip joint)
Now he is enjoying pain free mobility in his right hip joint and is eager to undergo surgery on the Left Hip too.
He is currently in India and can be contacted on - 08421511222
@@@
People troubled by painful joints, from across the globe, can 'Consult Free for Expert Opinion'with Orthopedic Surgeon – Dr. Shivkumar Santpure. And if an joint replacement surgery or operation is necessary, choose quality medical services from Kamalnayan Bajaj Hospital in Aurangabad, near Mumbai India.
About The Surgeon:
Dr. Santpure Shivkumar, Consultant Joint Replacement Surgeon, has performed over 2000 major surgeries like joint replacements & Ilizarov since 2002. Contact us for affordable knee replacement india, affordable hip replacement india, knee surgery, medical treatment, hip surgery, knee replacement surgery, total knee replacement, hip replacement surgery, total hip replacement, total knee replacement surgery, partial knee replacement, joint replacement, orthopedic surgery. Serving patients from the US, UK, Middle East Asia, SAARC, Aurangabad, Maharashtra, India
Visit: http://kneeortho.org/Index.htm
OR
Call +91-240-2377999 - 536 | +91-9325211654
Related posts:
Posted: Oct 4, 2011
|
A total knee replacement replaces your diseased knee joint and eliminates the damaged bearing surfaces that are causing you pain. The design of the implant offers you renewed stability and minimizes the wear process. Overall there are three benefits from your knee replacement:
Elimination of pain
Improved motion
Minimum wear and tear
Total knee replacement offers the greatest quality of life improvement of all operations. It has one of the highest success rates and one of the best outcomes.
KNEE REPLACEMENT COMPONENTS
The lower part of the replacement knee joint is comprised of a flat metal plate and stem that your surgeon will implant in the tibial bone, as shown in the movie above. This tibial tray can be either cobalt chrome alloy or titanium alloy. It can be fixed by either cement or bone “ingrowth”. Next, a polyethylene insert is clipped into the tibial tray to serve as the new knee bearing surface. The upper part of the replacement knee joint consists of a contoured metal shield that fits around the lower end of the thigh bone (femur). The inner surface can be fixed to the cut bone surfaces by the surgeon’s choice of bone ingrowth or bone cement. The outer surface of the contoured metal shield is shaped to allow the knee cap (patella) to slide up and down in its groove. The surgeon may choose to retain the natural knee cap or re-surface it. In this case a polyethylene button will be cemented in place.
|
TOTAL KNEE REPLACEMENT IMPLANTS
 |
|
A diagnosis of advanced osteoarthritis of the knee will indicate the need for total replacement of the knee joint. Based upon your age and lifestyle, there are several design options to choose from that will help you return to an active enjoyable life.
|
| FIXED BEARING |
|
|
The polyethylene cushion may be part of the platform (fixed) or free to move on a metal base (mobile). Most people get a fixed-bearing prosthesis that reduces knee pain dramatically and may last for many years. If you are younger, more active and/or overweight, sometimes a doctor may recommend a mobile-bearing or a rotating platform knee replacement designed for potentially longer performance with less wear. Doctors also consider gender, occupation, disability level, pain intensity, interference with lifestyle and other medical conditions in selecting the appropriate prosthesis.
|
 |
| MEDIAL PIVOT |
|
|
The Medial-Pivot knee replicates the rotating, twisting, bending, flexion, and stability of your natural knee, so it feels more like your natural knee. A normal knee actually pivots on its medial (inner side) condyle. When the knee flexes, the lateral (outer side) side rolls back while the medial side rotates in one place. This design "stays put" or is more stabile during normal knee motion as opposed to sliding forward slightly.
|
 |
| ROTATING PLATFORM AND MOBILE-BEARING |
|
|
Knee implants imitate the motion of your natural knee. In the Rotating Mobile Knee prosthesis, the polyethylene insert can rotate slightly around a conical post. It also slides back and forth on the tibial tray. This allows the knee to twist and turn (called rotation), as well as move back and forth, flexing and extending (called articulation).
The insert absorbs forces across a larger contact surface, helping reduce the amount of wear to the bearing and loosening in places where the implant attaches to bone. However, compared with Fixed-Bearing designs, Mobile-Bearing knee implants are less forgiving of imbalance in soft tissues. They may increase the chance of dislocation and may cost more than Fixed-Bearing implants.
|
 |
| POSTERIOR CRUCIATE LIGAMENT (PCL) - RETAINING OR SUBSTITUTING |
|
|
The Posterior Cruciate Ligament is one of the major ligaments in the knee. It provides support and stable movement of the knee. In total knee replacement surgery, the PCL can be kept or removed and this choice depends on the condition of the PCL, the type of knee implant or the type of surgery the surgeon likes to do. Each of these designs has advantages and disadvantages. Surgeon preference depends on his or her training and the clinical situation.
|
| PCL-RETAINING |
|
In PCL-Retaining designs, rearward movement of the tibia is resisted by an intact PCL, which creates stability.
|
| PCL-SUBSTITUTING |
|
|
PCL-Substituting knees (also called posterior stabilized knees) have a raised sloping surface or a polyethylene post that compensates for the missing PCL to give your knee more stability.
|
 |
| SPECIAL NEED KNEE IMPLANTS |
| NARROW FEMUR VS. NORMAL FEMUR |
|
|
People with smaller skeletons present challenges that require the adoption of implants constructed for their special needs. Research shows that regular-sized implants may overhang on the bone and lead to soft tissue interference or mid-flexion instability in those people with narrow femurs.
Implant manufacturers are now introducing special need implants for smaller than average patients. These new implants (represented in teal in the image to the right) are designed to accommodate those male or female femora with smaller than average dimensions. This helps ensure the special need patient will receive the best implant fit possible.
|
 |
| CUSTOM FIT THROUGH GRADUATED SIZING |
|
|
An important issue for knee implant design is how the kneecap moves against the new femoral component. Knee implants are designed with a groove, or track, that the kneecap rides in as the leg straightens and bends. How this track is designed is important because it partially determines how mobile the knee is and, to a certain extent, the level of comfort the implant provides.
Implant manufacturers who offer a broad range of implant sizes will best be able to fit special need patients. This is important because implants that are too wide can hang over the bone and irritate the soft tissues in the knee.
|
 |
| RESURFACING AND PARTIAL KNEE REPLACEMENT IMPLANTS |
|
Sometimes the deterioration of the knee joint is such that total knee replacement can be avoided and your surgeon may suggest resurfacing or partially replacing components of your arthritic knee. Preserving healthy bone stock is especially important to younger and more active individuals.
|
| PARTIAL KNEE RESURFACING |
|
|
Partial Knee Resurfacing is an innovative procedure designed to provide quicker recovery and improved surgical outcome for patients with osteoarthritis in only one part of the knee. By selectively targeting the portion of the knee that has become damaged by osteoarthritis, surgeons can isolate and resurface only the arthritic portion of the knee without compromising the healthy bone and tissue surrounding it.
This procedure is made possible through a surgeon-interactive robotic arm system. This system allows the surgeon to pre-operatively determine the damaged area of the bone to be removed and to plan the precise alignment and placement of the resurfacing implant specific to the patient’s anatomy. This level of consistently reproducible precision enables surgeons to restore knee function by resurfacing the arthritic defects rather than replacing the entire knee.
|
 |
| UNI-COMPARTMENTAL PARTIAL KNEE REPLACEMENT |
|
|
A partial knee replacement -- also called a uni-compartmental knee replacement -- involves putting an implant on just one side of the knee, rather than over the entire surface of the knee joint. Think of the knee as having three compartments: an inside, outside, and a front compartment for the kneecap. Most frequently, it is the inside compartment that becomes arthritic. A uni-compartmental knee replacement is done if part of the knee joint is damaged by arthritis and the other compartments have healthy, normal cartilage.
By retaining undamaged parts of the knee, the joint may bend better and function more naturally.
This Uni-compartmental Knee System is offered in two designs, inlay and onlay. Your surgeon will determine which implant design would be best suited for your knee.
The inlay implant is designed to restore the natural function of the knee by playing the role of the cartilage lost to osteoarthritis. It is comprised of two components: the femoral component (affixed to the femur bone) and the tibial component (affixed to the tibia bone). These components are implanted using a surgeon-interactive robotic arm system to ensure precise alignment and accurate placement. When the procedure is complete the components work together to provide a smooth surface for your knee joint to operate more naturally, like it did before osteoarthritis took its toll.
The onlay implant is also designed to restore the natural function of the knee by playing the role of the cartilage lost to osteoarthritis. It is comprised of three components: The femoral component (affixed to the femur bone), the tibial base plate (affixed to the tibia bone) and the base plate insert (affixed to the tibial base plate). These components are also implanted using a surgeon-interactive robotic arm system.
|
 |
| KNEE INTERPOSITIONAL DEVICE |
|
|
This device, which is modified for each individual, allows patients to return to light to moderate physical activities in short time. It can delay the need for further surgery by redistributing joint stresses and preserving the bone structure in the joint. The device closely matches the normal joint geometry, permitting the femur (thigh bone) to articulate against a smooth implant surface. Because the implant conforms to the bony structure of the tibia, it stays in place without the need for cement or screws.
In a healthy knee, the meniscus serves as a shock absorber between the ends of the bones. The implant to the right features an artificial meniscal bearing designed to glide freely throughout the knee's range of motion, more closely replicating normal movement. The free floating nature of the device also improves durability of the implant.
The implant to the right is designed using Computed Tomography (CT) images of the patient's knee. The implant is manufactured using anatomical information derived from these images, thereby achieving a custom fit for each patient.
The advantage of this type of implant is that only the damaged cartilage from the weight bearing portion of the femur is removed. It is resurfaced with a cobalt chrome implant that conforms precisely to the anatomy of the knee. The tibial component is made of polyethylene and only requires minimal bone removal to secure the implant.
|
 |
| BI-COMPARTMENTAL PARTIAL KNEE REPLACEMENT |
|
|
As osteoarthritis progresses, and the patient is no longer a candidate for a uni-compartmental implant, a total knee replacement has been the only treatment option available.
The bi-compartmental implant was developed to address this particular need, that is, when a standard uni-compartmental procedure is not indicated and a total joint replacement is not required or desired, for example due to disease in only two compartments or younger age.
The implant shown here is made specifically for an individual patient from their CT scan. Its unique design preserves the unaffected portions of the knee, maintaining the stability and natural properties of the joint.
|
|
| CEMENTED OR CEMENTLESS FIXATION |
|
|
Knee replacements may be “cemented” or “cementless” depending on the type of fixation used to hold the implant in place.
The majority of knee replacements are generally cemented into place. Cemented knee replacements have been used successfully in all patient groups for whom total knee replacement is appropriate, including young and active patients with advanced degenerative joint disease. 15 years of clinical reports support this conclusion.
Implant designs were introduced in the 1980's that were intended to attach directly to the bone without the use of cement. Cementless designs rely on bone growth into the surface of the implant for fixation. Most implant surfaces are textured or coated so that the new bone actually grows into the surface of the implant. Screws or pegs may also be used to stabilize the implant until bone ingrowth occurs. Because they depend on new bone growth for stability, cementless implants may require a longer healing time than cemented replacements.
Each case is individual and your surgeon will evaluate your situation carefully before making any decisions. Do not hesitate to ask what type of fixation will be used in your situation, and why that choice is appropriate for you.
|
| TYPES OF POLYETHYLENE |
|
|
Polyethylene used in knee joints runs the gamut from non-cross linked (sterilized by ethylene oxide gas or gas plasma methods) to moderately-cross linked (gamma radiation sterilization). Generally speaking, increased cross linking results in wear reduction, but there are design variables of the implant to consider.
Source: http://kneeortho.org/KneeReplacement.html
|
Related posts:
What is Arthritis?
Posted: Feb 5, 2011
Source: Arthritis Foundation
Arthritis is a group of conditions involving damage to the joints of the body.
There are over 100 different forms of arthritis and the most common form,osteoarthritis (degenerative joint disease) is a result of trauma to the joint, infection of the joint, or age. Other arthritis forms are rheumatoid arthritis, psoriatic arthritis, and autoimmune diseases in which the body attacks itself. Septic arthritis is caused by joint infection.
The major complaint by individuals who have arthritis is pain. Pain is often a constant and daily feature of the disease. The pain may be localized to the back, neck, hip, knee or feet. The pain from arthritis occurs due to inflammation that occurs around the joint, damage to the joint from disease, daily wear and tear of joint, muscles strains caused by forceful movements against stiff, painful joints and fatigue. The most important factor in treatment is to understand the disorder and find ways to overcome the obstacles which prevent physical exercise.
About Osteoarthritis
Osteoarthritis: The basics about this disease that affects 27 million Americans
If you’ve been diagnosed with osteoarthritis, you’re not alone. This chronic disease affects some 27 million Americans. Osteoarthritis is characterized by the breakdown of cartilage – the part of a joint that cushions the ends of the bones and allows easy movement. As cartilage deteriorates, bones begin to rub against one another. This can cause stiffness and pain that make it difficult for you to use that joint. Osteoarthritis can also damage ligaments, menisci and muscles. Over time osteoarthritis may create a need for joint replacements.
There are two types of osteoarthritis – primary and secondary. Primary osteoarthritis is generally associated with aging and the "wear and tear" of life. The older you are, the more likely you are to have some degree of primaryosteoarthritis.
However, not everyone gets it – not even the very old. That’s because OA is a disease, and not part of the normal aging process. Secondary osteoarthritis, in contrast, tends to develop relatively early in life, typically 10 or more years after a specific cause, such as an injury or obesity.
Osteoarthritis occurs most often in knees, hips and hands. Other joints, particularly the shoulders, can also be affected. OA rarely affects other joints, except as a result of injury or unusual physical stress.
The pain and stiffness of osteoarthritis can make it difficult to do daily activities including your job, play sports or even get around with ease. That’s why it’s important to learn all you can about this disease, how it affects you and how to live with it – a process called self management.
About Rheumatoid Osteoarthritis
Rheumatoid Arthritis: The basics about this disease that affects 1.3 million Americans
Rheumatoid arthritis, is a form of inflammatory arthritis and an autoimmune disease. For reasons no one fully understands, in Rheumatoid arthritis, the immune system – which is designed to protect our health by attacking foreign cells such as viruses and bacteria – instead attacks the body’s own tissues, specifically the synovium, a thin membrane that lines the joints. As a result of the attack, fluid builds up in the joints, causing pain in the joints and inflammation that’s systemic – meaning it can occur throughout the body.
Rheumatoid arthritis is a chronic disease, meaning it can’t be cured. Most people with Rheumatoid arthritis experience intermittent bouts of intense disease activity, called flares. In some people the disease is continuously active and gets worse over time. Others enjoy long periods of remission – no disease activity or symptoms at all. Evidence shows that early diagnosis and aggressive treatment to put the disease into remission is the best means of avoiding joint destruction, organ damage and disability.
Signs and Symptoms
The symptoms and course of rheumatoid arthritis vary from person to person and can change on a daily basis. Your joints may feel warm to the touch and you might notice a decreased range of motion, as well as inflammation, swelling and pain in the areas around the affected joints. Rheumatoid arthritis is symmetrical, meaning if a joint on one side of the body is affected, the corresponding joint on the other side of the body is also involved. Because the inflammation is systemic, you’re likely to feel fatigued and you may become anemic, lose your appetite and run a low-grade fever.
Long-Term Effects
Rheumatoid arthritis may affect many different joints and cause damage to cartilage, tendons and ligaments – it can even wear away the ends of your bones. One common outcome is joint deformity and disability. Some people withRheumatoid arthritis develop rheumatoid nodules; lumps of tissue that form under the skin, often over bony areas exposed to pressure. These occur most often around the elbows but can be found elsewhere on the body, such as on the fingers, over the spine or on the heels. Over time, the inflammation that characterizes Rheumatoid arthritis can also affect numerous organs and internal systems.
************
People from different places in the country and abroad come to Aurangabad to seek advice and treatment from Dr. Santpure Shivkumar, Consultant Joint Replacement Surgeon, at Kamalnayan Bajaj Hospital, Aurangabad.
Kamalnayan Bajaj Hospital is one of the largest private hospitals in State of Maharashtra and a pioneering hospital in the field of Joint Replacement surgery in India.
Kamalnayan Bajaj Hospital is a reputed multi-specialty hospital, renowned for its excellent medical expertise, nursing care and diagnostic services. The hospital is in tune with the latest technology that promotes the health care and well-being of the patient. There are 5 operating theatres equipped with laminar airflow and the most sophisticated equipment for replacement surgery.
Post operative care involves the use of most sophisticated methods to control pain and hasten recovery, such as epidural pump, sequential compression device and CPM. All these ensure excellent range of motion of the joint and quick return to a normal active pain free life.
Visit Aurangabad in India, a popular destination for Medical Tourism that is growing in popularity for Total Knee Replacement &Total Hip Replacement. Inclusive of imported material the cost of surgery is less than 1/10th that of in the US.
Know more...Ask The Expert!
People from different places in the country and abroad come to Aurangabad to seek advice and treatment from Dr. Santpure Shivkumar, Consultant Joint Replacement Surgeon, at Kamalnayan Bajaj Hospital, Aurangabad. Kamalnayan Bajaj Hospital is one of the largest private hospitals in State of Maharashtra and a pioneering hospital in the field of Joint Replacement surgery in India. Kamalnayan Bajaj Hospital is a reputed multi-specialty hospital, renowned for its excellent medical expertise, nursing care and diagnostic services. The hospital is in tune with the latest technology that promotes the health care and well-being of the patient. There are 5 operating theatres equipped with laminar airflow and the most sophisticated equipment for replacement surgery. Post operative care involves the use of most sophisticated methods to control pain and hasten recovery, such as epidural pump, sequential compression device and CPM. All these ensure excellent range of motion of the joint and quick return to a normal active pain free life. Visit Aurangabad in India, a popular destination for Medical Tourism that is growing in popularity for Total Knee Replacement &Total Hip Replacement. Inclusive of imported material the cost of surgery is less than 1/10th that of in the US. Know more... Ask The Expert!
Related posts:
Official response from Animas with 2020 s/w issue
|
Total Knee Replacement
|
BC/BS Massachusetts New CGMS Policy
|
Life after knee surgery
|
|
Create Your Blog
View All Blogs
Forums
|
|
|
|
|
