Fixation: A Case Study

The surgical procedure. A total knee replacement is a surgical procedure where the diseased knee joint is completely replaced by artificial materials that resemble the original knee joint. The orthopedic surgeon removed the end of the femur and the end of the tibia by using metal pieces and sawing the bone, to ensure that he removes the right amount of bone. The end of the femur bone is replaced with metal and the end of the tibia bone is replaced with plastic and metal. A plastic piece was added under the patella because the surface under the patella was damaged as well. These artificial materials, called prosthesis, have smooth surfaces so when they rub against each other, it does not cause damage and is pain-free. The purpose of this surgery is to remove the diseased portions of the joint and replace it with artificial materials to prevent further deterioration and eliminate pain, stiffness, and decreases in function that were caused by the osteoarthritis.

Dr. Cox has served as the team physician for St. Mary’s College Seahawks as well as the Chief of Surgery and Board Member at St. Mary Hospital. He offers the residents of Southern Maryland a variety of orthopedic services. Dr. Cox specializes in treating disorders of the hip and the knee. He has experience repairing the Anterior Cruciate Ligament (ACL), rotator cuff and meniscus by means of arthroscopic surgery. His passion is precision customized total knee replacements and every aspect of accelerated recovery following a joint replacement; therefore, he performs partial and total knee replacements using ConforMIS Knee Implants. These state-of-the-art implants provide patients with a custom-made implant that is designed specifically to meet his or her unique anatomy.

will never return to its full function as before because the steel plate on the bone and the connective

For this report I will concentrate on total hip replacement, its components, main surgical technique, and complications. Sir John Charnley first developed total joint arthroplasty in the 1960s (Skinner 395). In a total hip replacement "the articular surfaces of the acetabulum and femoral head are replaced" (Lemone 1241). A prosthesis is then used to replace the entire head of the femur

The most obvious factor in the influence of the advancements of prosthetics is mobility. Mobility has played a key role in

A total hip replacement is when the ball of the hip joint (which is also known as the femoral head) and the socket ( also known as the acetabulum) are removed and replaced with prosthetic part. Most people who have this procedure suffer from either sever hip fracture, they were born with a hip condition, or they suffer from an acute chronic arthritis(Stuart Fischer md,2010). The most common reason for a total hip replacement is a form of arthritis(osteoarthritis). Patient have this surgery to relive chronic pain they are suffering from. Someone who is suffering from a damage or a disease joint will be in constant pain(Stuart Fischer md, 2010).

Total knee replacements are known as the most effective orthopedic procedures in the world. These surgeries are most often preformed on geriatric patients. Over time, because the knee is one of the lowest joints in the body, it is typically more prone to wear compared to joints holding less body weight. In the United States, the overall amount of total knee replacements exceeds over four times the overall number of total hip replacements. In the year of 2015, the estimated number of total knee replacements was predicted to be about 719,000 ("Inpatient Surgery." Centers for Disease Control and Prevention). Ordinarily knee replacements are used to ease pain and disability caused by arthritis or other joint problems, while preserving movement.

Introduction: Because life expectancy is increasing, the number of performed primary knee prostheses is projected to increase 673% by 2030 (Westrich et al.). 20% of patients are unsatisfied with the outcome (Klit et al). The implant misalignment has been reported as a decisive factor in outcome and the primary reason for revision in 7% of revised prostheses (Ritter et al). Misalignment definition however varies among studies, making it difficult to compare the results.

Joint replacements are among the most common and successful orthopedic surgeries, giving more people the opportunity to remain active well into their golden years. (American) The American Academy of Orthopaedic Surgeons estimates there are more than 300,000 total hip replacements (THRs) and 600,000 total knee replacements (TKRs) performed every year—numbers that will only increase in the future. Most patients who undergo total joint replacement, or arthroplasty, experience a dramatic reduction in pain and a significant improvement in their ability to function in daily life. (American Hip)

Total hip arthroplasty (THA), commonly known as hip replacement, is a reconstructive orthopedic procedure that involves the surgical excision of the head and proximal neck of the femur and removal of the acetabular cartilage and subchondral bone(A). The damaged joint is replaced with an implant that mimics the motion of the natural joint and is made from combinations of metal, plastic and/or ceramic components(D).

Total Knee Replacements are the most successful procedures in all of medicine, accounting for 600,000 knee replacements each year in the US. The knee is the largest joint in the body, which is why it’s very important to have healthy knees in order to get around to perform daily activities. The knee consist of the lower femur, the upper end of the tibia, and the patella. The ends of the three bones touch, which is covered with articular cartilage, this is a smooth substances that protects the bones and enables them to move smoothly. Also, located between the femur and tibia are the menisci. The menisci are C-shaped wedges that act as “shock absorbers” this provides cushion for the joint as well. Then, the large ligaments also play a role as well, they hold the femur and tibia together to provide stability. The long

Hip arthroplasty is the replacement of the hip joint with a prosthesis, and is one of the most common reconstructive operations (Huo et al 2008). Hip arthroplasty may be performed when irreversible damage has occurred to the joint; this damage often causes pain, dysfunction and reduced quality of life.

Introduction: In case of advanced knee arthritis, Total Knee Arthroplasty (TKA) represents an effective and reproducible surgical technique. In the last decade, Computer-Assisted Systems (CAS) have been introduced in TKA to allow more accurate prosthesis component implantation via intra-operative anatomy-based data tracking of the tibio-femoral joint (TFJ). Particularly, these systems were expected to result in better post-operative clinical outcomes under loading conditions and longer implant survivorship than Conventional Instrumentation (CI). This is generally due to more precise targeted bone cuts and Mechanical Axis (MA) using CAS. Unfortunately, only a few studies have compared so far TKA via CAS and CI at a long term follow-up in terms of clinical outcomes, MA alignment and implant survivorship.

Total knee arthroplasty are also known as total knee replacement. It is used as one of the option to relive the pain and to restore the function to an arthritic knee. Total knee arthroplasty or total knee replacement is used when other methods such as weight loss, physical therapy, medical or injections have failed to relive arthritis- associated knee pain. Knee replacement implant is remove of damaged cartilage and bones from surface of knee joint and followed by implantation of an artificial knee joint made with biomaterials. Femoral components and tibial component are made with metal alloy. Between the Femoral component and tibal component there is a Polyethylene layer. Inflammatory response is Phagocytes which is cells that are able to

Over three hundred thousand hip replacements were performed in 2010. A two hundred percent increase from 2000. The number of replacements has continued to grow as recovery from the surgery has become much faster. Although recovery time has decreased, patients are still at risk of infection from their bodies rejecting the metal replacement hip. Infection from the bodies’ reaction to the metal hip will soon become a problem of the past as researchers have begun making replacement hips out of bone-like material infused with antibiotics. These new replacements will allow the body to heal with the new structure instead of fighting the foreign material. Patients will recover even faster with less chance of infection. Each patient’s hip will be custom-made to model the patient's bone with a new technique called Fused Filament Fabrication