Total knee replacement, also known as total knee arthroplasty or TKA, essentially involves resurfacing and replacing the damaged portions of the knee:
The compartments, or condyles, at the end of the thigh bone.
The top of the shin bone.
The underside of the knee cap.
B. What is the difference between MIS Quad-Sparing TKA and traditional knee replacement surgery?
MIS Quad-Sparing TKA uses the same clinically proven implants as traditional surgery, but the technique to place the implants is less invasive. In traditional surgery, the surgeon makes a 20- to 30-cm incision and cuts through or manipulates the quadriceps (quad) tendon and muscles, which control the bending of the knee. With MIS Quad-Sparing TKA, the surgeon makes a 75- to 126-mm incision and uses adapted surgical techniques and special instruments to avoid cutting through those key tissues.
C. How does the surgeon put in a knee through a small incision?
There are specialized instruments and training in minimally invasive surgical techniques that allow orthopaedic surgeons to access the ailing knee joint and place the same, clinically proven knee implants through a much smaller incision than is used for traditional knee replacement surgery.
D. What are the goals of MIS Quad-Sparing TKA?
The goals of MIS Quad-Sparing TKA compared to traditional knee replacement include:
Smaller, less conspicuous incision – 75 to 125-mm vs. 20 to 30 cm
Less tissue trauma – avoiding the quadriceps tendon and muscles rather than cutting through or manipulating them
Shorter total rehabilitation
Less blood loss
Shorter hospital stay
E. What are the risks of the procedure?
With any type of surgery there are potential complications. Generally, for any type of joint replacement surgery – traditional or minimally invasive – these include infection, blood clots, pneumonia, prosthesis loosening, nerve damage and reaction to the anesthesia. Your surgeon can answer your specific questions about these risks and others that may exist for your situation.
F. Is there a difference between the replacement knee used in MIS Quad-Sparing TKA and the one used in traditional knee replacement?
No. The same clinically proven implants are used for both MIS Quad-Sparing TKA and traditional knee replacement.
G. How can I determine if I am a candidate for the MIS Quad-Sparing procedure?
MIS Quad-Sparing TKA is an option for many but not all patients who are candidates for traditional knee replacement. The best way to find out if you are eligible is to meet with an orthopaedic surgeon who offers the procedure. Several factors will be considered, including your weight, medical history and the structural condition of the joint.
H. Can all orthopaedic surgeons perform this procedure?
No. Surgeons must receive training through to perform the MIS Quad-Sparing TKA procedure.
A. Am I a candidate for the Mini-incision hip replacement procedure?
The decision to have the MIS Mini-Incision procedure is up to you and your orthopaedic surgeon. Your attending surgeon will consider a number of factors, including:
1. Medical history
3. Health status
4. Anatomical structure, including bone structure and extent and pattern of arthritis.
Your doctor can help you determine if you are a candidate for the MIS Mini-Incision procedure. Hip replacement is considered when:
1. Joint damage is visible on x-ray
2. Pain, swelling, and stiffness in the hip are prevalent
3. Persistent pain and disability interfere with daily life activities
4. Hip motion is extremely limited
5. Nonsurgical interventions, such as medication, physical therapy, and the help of a cane or other walking aid, have failed .
1. The Mini-Incision hip replacement offers significant potential advantages over traditional hip replacement:
2. Smaller incision and scar--one incision as small as 4 – 5 inches in length, rather than the standard 10 – 12 inches incision
3. Shortened hospital stay--possibly three days versus four and a half or more.
4. Faster rehabilitation
5. Little blood loss ( usually no blood transfusion is required for a primary THR These benefits may allow a quicker return to work and daily activities.
To diagnose your condition, an orthopaedic surgeon will perform a thorough examination of your hip, analyse x-rays, and conduct physical tests. You will be asked to describe your pain, if you suffer from other joint pain, and if you have endured past injuries that may have affected your current hip condition.
Your joints will then be tested for strength and range of motion through a series of activities, which include bending and walking. X-rays of your hip joint will indicate any change in size, shape or unusual circumstances.
The final decision to undergo the Mini-incision procedure for total hip replacement is ultimately yours, in consultation with your doctor. As with any surgery, there are risks involved.
Surgical options for patients with osteoarthritis of the knee
Osteoarthritis (OA) of the knee is a progressive disease that ultimately damages the entire joint. Knee OA should initially be treated conservatively, but surgery should be considered if symptoms persist. Surgical treatments for knee OA include arthroscopy, osteotomy and knee arthroplasty; determining which of these procedures is most appropriate will depend on several factors, including the location and severity of OA damage, patient characteristics and risk factors. Arthroscopic lavage and debridement do not alter disease progression, and should not be used as a routine treatment for the osteoarthritic knee.
Bone marrow stimulation techniques such as microfracture are primarily used to treat focal chondral defects; the evidence for the use of these techniques for knee OA remains unclear. The goal of osteotomy for unicompartmental knee OA is to transfer the weight load from the damaged compartment to undamaged areas, delaying the need for joint replacement. This procedure should be considered in young and active patients who are not suitable candidates for knee arthroplasty. For patients with severe OA, total knee arthroplasty can be a safe, rewarding and cost-effective treatment. In selected patients with isolated medial or patellofemoral OA, unicompartmental knee arthroplasty and patellofemoral replacement, respectively, can be successful.A degenerative joint disease, osteoarthritis is one of the oldest and most common forms of arthritis. The disease causes the cartilage normally found in joints to break down. This breakdown removes the buffer between bones and the resulting bone-against-bone friction causes pain and eventual loss of movement. Symptoms include joint pain or aching (often after exercise or extended periods of pressure on weight-bearing joints) and limited or eventual loss of motion. Osteoarthritis affects lakhs of patients in In dia and some of them are not very old.Their level of activity is high and a major procedure like TOTAL KNEE REPLACEMENT is neither needed nor desirable .
MIS High Flex Partial Knee Replacement
MIS High Flex Partial Knee system is a partial knee implant for people who need joint replacement, but only have damage to one side â€“ or compartment â€“ of their knee.
Partial knee replacement has been around for 30 years. What's new with the MIS High Flex Partial Knee is the extent to which this partial knee is capable of bending, which is referred to as flexion. While this implant will not guarantee you high flexion, it will safely accommodate high flexion if you are able to achieve it. This is significant because many other partial â€“ and total â€“ knee implants being used today do not allow for deep knee bending. In addition, MIS High Flex Partial Knee was designed for placement using today's minimally invasive techniques, which if you are a candidate, are helping many people get back to life and work faster than patients who undergo traditional knee replacement surgery.
MINIMALLY INVASIVE UNICONDYLAR KNEE REPLACEMENT
The MIS instruments enable the implantation of Unicompartmental implants through a 3-4inch incision. The MIS technique avoids patella eversion and reduces disruption of soft tissue and quadriceps. Some of the benefits of minimally invasive surgery are:
Reduced length of hospital stay
Less blood loss
Frequently Asked Questions MIS Procedure for the Uni Knee Replacement
Q. What is Partial Knee Replacement, and How is it Different from Total Knee Replacement?
A. In total knee replacement surgery, the damaged surfaces of all three bones are resurfaced with metal and plastic implants. Using special, precision instruments, our surgeon will typically remove the damaged surfaces. The replacement surfaces will then be fixed into place. The surface of the upper bone is replaced with a rounded metal component that comes very close to matching the curve of your natural bone. The surface of the lower bone is replaced with a flat metal component and a slab of ultra-high-molecular weight polyethylene plastic to serve as the cartilage, or the entire component may be plastic. The undersurface of the kneecap also may be replaced with a round disc made of the same polyethylene plastic.
Partial knee replacement is an option for patients who do not require total knee replacement because some of the joint surfaces are still healthy. In partial knee replacement surgery, the surgeon removes only the diseased portion of the knee before placing the implant, leaving the healthy portion untouched. This means that the surfaces are replaced on only one side of the joint, that is, only one of the rounded projections is replaced beneath it.
Q. What is the difference between the MIS procedure and the standard procedure?
A. The MIS procedure involves removing only the diseased portion of the knee, through an incision that is one-third to one-fourth the size of a traditional knee replacement incision. Rehabilitation time after the MIS procedure is estimated at five weeks. Traditional, total knee replacement surgery involves removing or resurfacing more parts of the knee, including both condyles and often the underside of the kneecap. Rehabilitation time for a total knee is estimated at 12 weeks. Most total knee replacements are performed on patients 65 years of age and older; whereas, the majority of patients receiving the MIS procedure for the Uni Knee are 55 and older.
If partial knee replacement is not an option for you, you may want to ask your doctor about minimally invasive procedures for total knee replacement, such as the MIS Mini-Incision or MIS Quad-Sparing TKA.
Q. What are the benefits of the MIS procedure compared to traditional knee replacement surgery?
A. Clinical results suggest that patients who undergo the MIS procedure may experience a shorter hospital stay (24 hours or fewer), faster rehabilitation and a smaller incision scar. Patients may also experience an increased range of motion after recovery.
A successful Uni Knee replacement may delay, and in some cases, prevent a more extensive knee replacement surgery.
FULL RANGE OF KNEE FLEXION AFTER MIS UNI KNEE REPLACEMENT
NORMAL KNEE FUNCTION AFTER MIS UNI KNEE REPLACEMENTT
Q. Is MIS Partial Knee Replacement Better?
A. The MIS partial knee replacement procedure may not help your new knee joint function better or last longer than traditional surgery, but it might help make your surgery, recovery, and rehabilitation faster and easier for you.
Q. How do I know if I am a candidate for the MIS procedure and Uni Knee Replacement?
A. A number of factors can determine whether a patient is qualified to undergo the MIS procedure for the Uni Knee replacement and how successful the procedure will be. An ideal candidate is someone who has osteoarthritis of the knee that is isolated to only one condyle (or compartment) of the knee. Candidates also may include people who are not responding to other forms of treatment such as medication, arthroscopy or cartilage transfers. The Uni Knee replacement is not performed on individuals with rheumatoid arthritis.
Q. How Do I Decide?
A. The decision to have the MIS procedure for an Uni Knee replacement is up to you and your orthopaedic surgeon. Your doctor will consider a number of factors, including: medical history, weight, health status, and anatomical structure, including bone structure and extent and pattern of arthritis.
Q. Is the procedure covered by insurance?
A. Yes. Although insurance plans vary, the MIS partial knee procedure is usually covered by insurance in the same manner that traditional unicompartmental knee replacement surgery is covered. Check with your insurance plan in advance to be sure.