Hip Prosthesis Research

"In the short term, the recovery time is likely longer than it would be with a cemented implant. However, the non-cemented fixation normally lasts longer because it relies on bone ingrowth. HA relies on the strength of the cement to keep the implant in place."

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

Current knee brace are designed using a combination of plastic, metal and or other composite material for basic support. The additional features such as heating & cooling system (HCS), massage vibrators (MV), adding adjustor system (AS) and semi-manual strapping system (SMS) will revolutionize and modify the way we treat various knee disabilities and injury which is often overlooked globally. By combining different components together we have made a portable, multi-accessory product that can help multitudes of people to get better.

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

During a total hip replacement, one or both parts of the hip joint are replaced, depending on the type of joint damage you have. The hip is a ball-and-socket type of joint, and it has two main parts. The ball part of the joint (femoral head) is the top of the thigh bone (femur). The socket part of the joint is a large indent in the side of your pelvis (acetabulum) where the femur and pelvis meet.

The acetabular components have a "spherical outer surface with at least one hole to permit the surgeon to determine if the prosthesis is fully impacted into place" (Skinner 399). The inner surface of the acetabular component then locks the UHMWPE to limit rotation and dissociation (Skinner 399). There are two crucial factors when choosing the implants. First, if the prosthesis is too stiff then the patient may suffer from proximal osteopenia. Second, the stiffer the prosthesis is the more likely the patient will experience pain in the thigh. To avoid these two factors the surgeon should elect to use titanium ally instead of the cobalt chromium alloy.

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).

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.

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).

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.

The continuous aging of the human body combined with the stress of physical activities create a repeated stress on the joints of our bodies that carry the potential risk of developing osteoarthritis. Osteoarthritis is one of the most common forms of arthritis that is the worsening of the joints occurring particularly in the hands, knees, and hip. Osteoarthritis occurs primarily with elderly individuals who have severely worsened their joints leading to disability. When studying joint deterioration “radiographic signs of OA include joint space narrowing, subchondral bone sclerosis, and osteophyte formation” (Bennell, Poquet, Williams, 2016, P. 1689). These signs prove detrimental for some individuals who begin to suffer severe pain leading to the inability of performing simple tasks such as writing and/or walking. Hip disabilities are especially common as a result of osteoarthritis, leaving individuals with several choices of treatment. Whether it’s physical therapy, exercise, or taking medicine, these options might not prove helpful depending on the severity of the hip joint. In this essay, I will be comparing minimally invasive hip replacement to traditional hip replacement to determine why someone need’s a hip replacement procedure, which option more favorable, and the physical therapy following post-replacement.

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.

From peg legs and hooks to mechanical arms and legs, prosthetics have improved drastically since the dawn of time. Prosthetics have allowed amputees to obtain more mobility and flexibility in their lives. The advancements in prosthetics have also led to a better understanding in the area of amputation and in the assembly of the prosthetics themselves. The question is what allowed the advancements of prosthetics to happen in the first place? The answer lies within technology and its role in the medical field. Technology has allowed for prosthetics to not only look like real limbs, but to function as though they are real. Progression in the fabrication of the prosthetic limbs from wood and leather, to now programmable microprocessor controls

Prosthetic devices are needed by many people throughout the world every year due to injuries and health complications. However, choosing the correct prosthetic and being able to afford the device can seem a bit challenging. Prosthetic devices are made up of many different components and different prosthetics are made for different lifestyles. Designing, making, and assembling these pieces can be very costly. In fact, a prosthetic leg can range anywhere from $5,000 to $50,000, and even the most expensive prosthetics withstands use for only three to five years (Mohney). Regardless of the current cost, technology is advancing and we are developing new ways to make these devices. Prosthetic devices are improving by becoming more technologically advanced, cheaper, and more widely available.