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Is The Acl Cut During Knee Replacement

Use Of The Patellar Tendon Or Hamstring To Repair A Torn Acl

What is ACL Surgery?

You should be aware that repairing the torn ACL does NOT involve sewing two torn ends together. Think of your ACL as a rubber band. Once it snaps, it can not be sewn together. Instead, you have to replace the rubber band completely. And that is exactly what the knee surgeon does. They attach a new rubber band to your shin, thread it through your knee and anchor it your femur.

You should ask your physician HOW they repair the ACL. Some knee surgeons use a patellar tendon while many others use a hamstring ligament. There are pros and cons to each.

Harvesting a patellar tendon from the front of the knee makes for a more painful recovery and painful rehabilitation. However, professional athletes who are used to pain from training are more able to tolerate this approach, especially considering that the patellar tendon is viewed by some surgeons to be a higher performance replacement for the torn ligament than the hamstring. Using a hamstring ligament is less painful on rehab of the knee, and some surgeons feel that for most people, the strength of the ligament is sufficient.

Overall, most surgeons would agree that the performance of the knee after ACL replacement is directly linked to how much commitment is given to strengthening the knee with exercises. With the right knee specialist, and with specialized knee rehab, a professional athlete can regain their competitive form and play professional sports again.

What Ligaments Are Removed During A Total Knee Replacement

Reviewed by: Aubrey Bailey, PT, DPT, CHT

Surgeons are constantly looking for ways to improve a surgery. Total knee replacements have morphed over the years to become less invasive and improve recovery times. A new style of totalknee replacement surgery is emerging that doesn’t replace any ligaments. Traditional surgeries replace one or two out of the four knee ligaments.


Depending on the type of surgery you have, two or fewer of the four ligaments in your knee may be removed.

The Right Treatment For Your Knee Pain

Total knee replacement surgery and ACL surgery are just two options for treating acute and chronic knee pain. With offices located in both Rockford, IL, and Algonquin, IL, Dr. Van Thiel is skilled in an array of state-of-the-art knee treatments aimed at helping his Algonquin and Rockford patients feel their best. To learn whats causing your knee pain and how to relieve it, contact OrthoIllinois and request an appointment with Dr. Van Thiel today.

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Will The Knee Bleed More Without A Tourniquet

Studies have shown no difference in blood loss during knee surgery done with or without a thigh tourniquet. Without a tourniquet, most blood loss occurs during the operation. If need be, this blood can be collected by a cell-saver device and given back to the patient. With a tourniquet squeezing the thigh, all the blood loss occurs after the tourniquet is let down and oxygen-deprived tissues get the blood flow restored. This blood is usually collected in a drain placed in the knee joint after surgery and discarded.

Technical Details Of Total Knee Replacement

Torn Knee Ligaments? ligament knee

Total knee replacement surgery begins by performing a sterile preparation of the skin over the knee to prevent infection. This is followed by inflation of a tourniquet to prevent blood loss during the operation.

Next, a well-positioned skin incision–typically 6-7 in length though this varies with the patients size and the complexity of the knee problem–is made down the front of the knee and the knee joint is inspected.

Next, specialized alignment rods and cutting jigs are used to remove enough bone from the end of the femur , the top of the tibia , and the underside of the patella to allow placement of the joint replacement implants. Proper sizing and alignment of the implants, as well as balancing of the knee ligaments, all are critical for normal post-operative function and good pain relief. Again, these steps are complex and considerable experience in total knee replacement is required in order to make sure they are done reliably, case after case. Provisional implant components are placed without bone cement to make sure they fit well against the bones and are well aligned. At this time, good function–including full flexion , extension , and ligament balance–is verified.

Finally, the bone is cleaned using saline solution and the joint replacement components are cemented into place using polymethylmethacrylate bone cement. The surgical incision is closed using stitches and staples.


Length of total knee replacement surgery

Pain and pain management

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The Cruciate Ligaments In Total Knee Arthroplasty

Am J Orthop

Bertrand W. Parcells, MD, and Alfred J. Tria Jr., MD

Dr. Tria reports that he receives royalties from Smith & Nephew, and is a consultant for Smith & Nephew, Medtronic, and Pacira. Dr. Parcells reports no actual or potential conflict of interest in relation to this article.

The early knee replacements were hinge designs that ignored the ligaments of the knee and resurfaced the joint, allowing freedom of motion in a single plane. Advances in implant fixation paved the way for modern designs, including the posterior-stabilized total knee arthroplasty that sacrifices both cruciate ligaments while substituting for the posterior cruciate ligament , and the cruciate-retaining TKA designs that sacrifice the anterior cruciate ligament but retain the PCL. The early bicruciate retaining TKA designs suffered from loosening and early failures. Townley and Cartier designed BCR knees that had better clinical results but the surgical techniques were challenging.

Kinematic studies suggest that normal motion relies on preservation of both cruciate ligaments. Unicompartmental knee arthroplasty retains all knee ligaments and closely matches normal motion, while PS and CR TKA deviate further from normal. The 15% to 20% dissatisfaction rate with current TKA has renewed interest in the BCR design. Replication of normal knee kinematics and proprioception may address some of the dissatisfaction.

Special Precautions To Take

  • Remember this is an artificial knee and must be treated with care.
  • In general, the more active you are the quicker your knee will wear out.
  • You can drive when you have regained muscle control, usually by 6 weeks.
  • Avoid situations where you might fall.
  • Your knee may go off in a metal detector at the airport. You can receive a note from our rooms to say you have had a joint replacement.
  • Prevention of infection is vital. If you have any infections anywhere make sure you see your local doctor straight away for treatment. If you get increasing pain in your joint and are sick and have temperatures you should go to hospital to get checked out.
  • USE OF ANTIBIOTICS Antibiotics should be prescribed if you have an infection anywhere in the body, if you have surgery in contaminated areas such as teeth, nose, bowel or bladder, podiatry treatment or urinary catheterisation.

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What Is Recovery Like

Physical therapy will begin soon after your surgery, but it will be about three to six weeks before you can resume most of your daily activities. Until then, youll need someone to drive you to and from your doctor appointments, and youll also need help with housework. Youll need to avoid squatting, climbing stairs, and carrying any heavy loads during the initial stages of recovery. Dr. Van Thiel and your therapist will work with you to increase your activity as your knee heals.

Although your new joint will function much like your natural joint, youll need to avoid high-impact activities to keep your joint healthy. That includes activities that involve jumping, contact with other players, or rapid pivoting. Low-impact activities, like walking, biking, and swimming , are excellent choices for staying active.

How To Prepare For Knee Replacement

ACL Reconstruction & MAKO Partial Knee Replacement Surgery Patient

There are certain steps that can improve your recovery time and results. It is important to follow your knee replacement surgeonâs instructions both before and after surgery, as well as that of your rehabilitation therapistâs recommendations. Learn more about reparing for knee replacement by reading .

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How Does Computer Navigation Help In Knee Replacement Surgery

Precise alignment of the bones during knee replacement is critical to the long-term performance of the joint replacement. Computer programs can help in such alignment of bones, and reduce the possibility of error. Beyond computer-assisted technology, robotic arms help position bone preparation guides very precisely, and optimize the result for each patient.

With the advent of the custom-made knee replacement by CONFORMIS , the need for gender-specific knees, left versus right knees, race-specific knees, high-flex knees, computer navigation, robotic-assisted surgery, and other supportive technologies is entirely obsolete and a thing of the past. With a custom-designed knee replacement, the fit, fill, sizing, orientation, rotation, depth, shape, contours, geometry, flexibility, and instrumentation are all optimized for one particular knee, unique to the individual patient. These parameters are optimized to their theoretical extreme, such that surgeon-to-surgeon variability is minimized, thereby maximizing patient outcomes, recovery, safety, reliability, and quality. This technology is revolutionary and commonly used for total knee replacements. Added benefits are simplification of surgery, reduction in product inventory and complexity, and the reduced chance of error.

Ask your surgeon about the latest materials and procedures.

Who Is The Best Knee Replacement Surgeon

Naturally, we believe Dr. Larry Likover is the best knee replacement surgeon.

He has performed thousands of knee replacements through the years and is well-trained and highly skilled at what he does.

People know Dr. Likovers work and come from around the world for his knee replacements. Learn more about this Houston knee surgeon.

Have more questions not covered in this knee replacement FAQ? Contact us.

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Sparing Your Acl With Knee Replacement

If you have a total knee replacement in your future, you may have heard about a procedure that retains the anterior cruciate ligament , also known as an ACL-sparing knee replacement. The popularity of this surgery continues to increase, especially among younger patients. But is an ACL-sparing knee replacement worth it?

First, you need to understand why some physicians believe the ACL should be spared. In the past, total knee replacement required the removal of the ACL, even if it was completely healthy. This was due to the design of replacement knees. When new implants came on the market that allowed surgeons to keep the ACL intact, many hoped they would lead to a more normal movement and thus better outcomes.

Because little long-term research is available, the jury is still out on ACL-sparing knee replacement. Some evidence shows no difference in patient-reported knee function with the newer implant, while other reports show superior patient satisfaction with the feel of the new knee. Advocates of the ACL-retaining procedure claim that it leaves the knee feeling more natural and allows for better control, better movement and better stability. For active patients who hope to continue activities requiring twisting, bending and sudden stops , this can be a significant benefit.

Are Knee Ligaments Removed During Surgery

Knee Ligament Injuries: Tears of the Anterior Cruciate ...

Internal knee ligaments are usually so worn out in arthritic knees that what remains of them is removed. The knee prosthesis itself is engineered to substitute for internal knee ligaments and stabilize the joint.

New knee designs, such as the CONFORMIS custom-knee that is built for each patient offer the benefit of preserving knee ligaments. New knee designs and materials are constantly being introduced.

The supporting ligaments outside the knee joint are usually preserved during replacement surgery. These external ligaments are called the medial collateral ligament and the lateral collateral ligament . These ligaments continue to function after knee replacement surgery. For severe deformity, arthritic destruction, or unusual cases, prosthetic designs can substitute for all knee ligaments, providing more stability when compared to routine total knee prosthesis.

Thus, even very unstable and deformed knee joints can be replaced successfully, allowing the patient to fully weight-bear immediately, without fear of the knee giving out, and without knee braces. The choice of implant is based on the individual case and amount of knee joint deformity, as well as surgical judgment.

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So Who Is A Candidate

Knee replacement is a procedure generally reserved for those who are over 60 years of age who are in relatively good health, aside obviously, from their knee pain. In fact, 72 percent of knee replacements are done on those over the age of 65. Generally, this means, they maintain a healthy weight, they do not suffer from cardiovascular problems, and they are not suffering from a terminal illness.

Active knee replacement candidates will find it comforting to know that they will be able to resume some athletics following surgery such as golf, swimming, and walking. Some knee replacement recipients have even continued to play tennis and snow ski. Unfortunately, a knee prosthesis is not quite as effective as a healthy, natural knee, however it will be a great improvement over the preoperative pain and discomfort.

What Are The Benefits Of A Knee Replacement

You do not have to live with a painful knee for the rest of your life. During this surgery your problem knee joint is replaced with an artificial joint . After a knee replacement you can look forward to moving more easily and without pain. Most people gain all the following benefits

  • Stops or greatly reduces knee pain.
  • Improves quality of life by allowing you to do your activities of daily living and low impact activities in greater comfort.
  • Enables you to sleep without pain.
  • Provides years of reliable function. Most total knee replacements last for many years.

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What Is A Total Knee Replacement Whats The Difference

If more than one part of your knee is worn out, you may need a total knee arthroplasty .

In a total knee replacement, which is a more invasive surgical procedure, the damaged cartilage and bone are removed and replaced with an implant system.

Basically, the whole knee joint is replaced. The surgical incision is larger, the surgery is more complex, and the recovery takes longer.

Exercises To Promote Quad Activation

ACL Tear and Reconstruction – Knee Ligament Injury

If you dont do anything to help the quad atrophy, it can slow down your recovery process. The following exercises can help maintain knee function and strength.

  • Hamstring curls
  • Although it seems counter-intuitive, building a strong core is essential as well.
  • According to Dr. Farr, Doing pre-habilitation, known as exercises before you get surgery, can help you be more successful with your post-operative exercises. After surgery, jump-start the rehabilitation program as soon as determined safe by your surgeon.

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    Preparation For Total Knee Replacement Surgery

    Patients undergoing total knee replacement surgery usually will undergo a pre-operative surgical risk assessment. When necessary, further evaluation will be performed by an internal medicine physician who specializes in pre-operative evaluation and risk-factor modification. Some patients will also be evaluated by an anesthesiologist in advance of the surgery.

    Routine blood tests are performed on all pre-operative patients. Chest X-rays and electrocardiograms are obtained in patients who meet certain age and health criteria as well.

    Surgeons will often spend time with the patient in advance of the surgery, making certain that all the patient’s questions and concerns, as well as those of the family, are answered.


    The surgeon’s office should provide a reasonable estimate of:

    • the surgeon’s fee
    • the degree to which these should be covered by the patient’s insurance.

    Total Knee Replacement Surgical Team

    The total knee requires an experienced orthopedic surgeon and the resources of a large medical center. Some patients have complex medical needs and around surgery often require immediate access to multiple medical and surgical specialties and in-house medical, physical therapy, and social support services.

    Finding an experienced surgeon to perform your total knee replacement

    Some questions to consider asking your knee surgeon:

    • Are you board certified in orthopedic surgery?
    • Have you done a fellowship in joint replacement surgery?
    • How many knee replacements do you do each year?

    When Do You Need A Knee Replacement How Do You Know

    If you are suffering from persistent or reoccurring knee pain, you have difficulty with walking and other normal activities, your knee is stiff and swollen or leg is bowed, and/or medications and therapy are not providing enough relief, it may be time for a knee replacement.

    Talk to an orthopedic specialist. Discuss your options.

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    What Is Knee Replacement Surgery

    Knee replacement is where portions of the bones that form the knee joint are removed and replaced with artificial implants. It is performed primarily to relieve knee pain and stiffness caused by .

    Most people who get this surgery have advanced knee arthritis, in which the knee cartilage is worn away and the surface of the knee becomes pitted, eroded, and uneven. This causes pain, stiffness, instability and a change in body alignment. Knee replacement surgery can also help some people who have a weakened knee joint caused by an injury or other condition. “” rel=”nofollow”> knee replacement specialist at HSS.)

    Will My Leg Have A Tourniquet On During Surgery

    ACL Surgery

    A thigh tourniquet is a device like a blood pressure cuff. It is placed on your thigh and inflated to let the surgeon operate more easily by cutting off the blood supply to the leg while the knee joint is open.

    For convenience and out of habit, many surgeons in the United States do use a tourniquet for knee replacement surgery. It is worth asking him or her about. Tourniquets can lead to increased tissue trauma to the thigh muscles, which are squeezed hard for the entire duration of surgery, and a lack of oxygen to the entire leg during the operation. The result is pain, tissue damage, and delayed recovery.

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    About Knee Replacement Surgery

    One of the most important orthopedic surgical advances of this century, knee replacement was first performed in 1968. Improvements in surgical materials and techniques since then have greatly increased the procedures effectiveness. According to the American Academy of Orthopaedic Surgeons. about 267,000 total knee replacements are performed each year in the United States.

    Most Common Causes for Knee Replacement
    • Arthritis: Arthritis is a wearing away of the surfaces of the joint, caused either by aging or disease. As the cartilage wears away, the raw bones rub together whenever the joint moves. This rubbing causes pain and a roughening of the surfaces of the bone.
    • Osteonecrosis: If the blood supply to the thigh bone is decreased, part of the bone will die and break from weight-bearing activity. The result is a very painful joint.
    • Injuries: Injuries include trauma and accidents, or continue abuse from sports injuries.

    If medications, changing activity level, and using walking supports are no longer helpful, you may want to consider total knee replacement surgery. By replacing the knee’s damaged and worn surfaces, total knee replacement surgery may relieve pain, correct leg deformity, and helps many patients to resume their normal activities.

    Total Knee Replacement: Traditional Procedure
    Partial Knee Replacement
    Mini-Incision Knee Replacement

    This careful placement of the knee replacement usually leads to the following benefits:

    Revision Surgery


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