Total Hip Replacement (THR)

Total joint replacements are very common in the United States, and are becoming even more common with increasing obesity rates and an increase in life expectancy. Long-lasting and high-performance implants are needed for the younger, active population that receives them. The Agency for Healthcare Research and Quality states more than 285,000 total hip arthroplasties (THA) and 600,000 total knee arthroplasties (TKA) are performed in the United States alone each year (2). Longevity of these joint replacements is dependent on several factors: the durability of the fixation of the implant surface to the bone, the bearing surface’s wear rate, and the accuracy of the surgeon in implantation of the total joint (2). Of these total joint replacements, periprosthetic osteolysis and aseptic loosening occurs in about twenty percent of cases, and aseptic loosening is responsible for about seventy-five percent of total joint replacement failures (2). This is

A total knee replacement (TKA) is the most common joint surgery performed in the United States (Turner, 2011, pp. 27-32). Each year, over 650,000 Americans undergo this surgery (Wittig-Wells, 2015, pp. 45-49). It is an invasive surgery that involves an incision on top of the knee and replacing damaged parts of the knee with artificial parts that are either metal, ceramic or plastic. Someone would get a total knee replacement for damage of the joint, osteoarthritic, posttraumatic, or inflammatory arthritis. The cartilage is damaged, wears away and then you develop bony deformity and contracture of ligaments but it starts out with specific defects or wear of cartilage. The top nursing priorities for a total knee arthroplasty is to “prevent complications, promote optimal mobility, alleviate pain, and provide information about diagnosis, prognosis, and treatment needs” (Doenges, 2014, pg. 627). A possible nursing diagnosis from the patient who is undergoing a TKA might be ‘impaired physical mobility related to pain and discomfort as evidenced by reluctance to attempt movement.’ Another one could be ‘acute pain related to chronic joint disease as evidenced by reports of pain’ (Vera, 2014).

The bone structure of a normal hip consists of an acetabular and a femoral head, which is covered with articular cartilage, a smooth and strong cover. There is then a ring of cartilage which is called the acetabular labrum. This provides stability, maintains joint fluid pressure and distributes weight to the femoral head. With poor coverage of the femoral

Total hip replacement is a surgical procedure to remove damaged bone in your hip joint and replace it with an artificial hip joint (prosthetic hip joint). The purpose of this surgery is to reduce pain and improve your hip function.

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

Getting a total or even a partial hip replacement in Frisco, TX is a major surgical event, and the process of deciding whether or not to have a the procedure performed is an even bigger decision. Perhaps the most daunting aspect of getting a hip replacement in Frisco, TX is the recovery time that is necessary following the surgery. If you're not sure whether or not it may be time to tackle this kind of major surgery, here are some of the signs you should be looking out for.

Once the head of the femur was removed, a drill was used to create a canal in the femur; this allows the femoral stem to be placed. The head is then connected to the same femoral stem. The small head is the replacement for the original femoral head which was the site of the osteoarthritis. Next an acetabular shell made of high molecular weight polyethylene is inserted into the acetabulum of the hip bone. The acetabular shell and femoral head articulate with one another and comprise Mrs. R’s new hip joint (United States Library of Medicine, 2013).

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.

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).

Despite contrary belief, hip replacement is not necessarily negative. Many Americans believe that in order to have a hip replacement, your condition must be terrible. A survey conducted in 2012 said that almost 1/3 of respondents to the hip replacement survey felt they would have benefited from having their surgery done earlier. This procedure has and continues to change the lives’ of many people in our world. Hip replacement, or arthroplasty, is a surgical procedure in which the diseased parts of the hip joint are removed and replaced with new, artificial parts. These artificial parts are called the prosthesis. The goals of hip replacement surgery include increasing mobility, improving the function of the hip joint, and relieving pain. According to the Centers for Disease Control and Prevention, 332,000 total hip replacements are performed in the United States each year. “Hip Replacement.” Questions and Answers about. N.p., n.d. Web. 21 Oct. 2013.

People undergo total knee replacement when arthritis or injury erodes the joint's natural cushioning to the point where it's hard to walk even short distances without severe pain.

For the purpose of creating dentures, many materials have thus far been used, amongst these, poly methylmethacrylate (PMMA) have become the most popularly used materials (Machado et al., 2007). However, this material does come with its set of drawbacks. Its moderate to low fracture strength is the most important drawback (Mumcu et al., 2011). The population that most commonly requires the use of dentures are the older age groups. In view of this, it can be stated that older people have reduced muscular control and hence results in accidents which cause fracture of the dentures (Stipho & Talic, 2001). One way this limitation of the PMMA can be overcome is to add metal frameworks to the denture structure. But even so, drawbacks such as metal corrosion, allergy to the metal, deformation, and also aesthetic concerns do exist. Besides this, there is also difficulty in the casting

Internal fixation devices in the past had been made of stainless steel or titanium, but with problems resulting from those permanent devices, an innovative approach is being considered. Bioresorbable implants are a possible replacement to the original implants that would eliminate the need for removal, which has shown to be a problem for traditional implants.

To analyze the life and safety of such a THR is very important along with careful surgical procedure for successful total hip replacement. Appropriate biocompatible materials and choice of appropriate dimensions and shape of the prosthesis are the important factors deciding the life and safety of a THR. The size and shape determine the magnitude of stresses induced which might lead to the fatigue failure of hip joint. Therefore, the present work aims at fatigue testing of hip implant.