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Future and past of prosthetics
Advancements in prosthetics from the past and present
Future and past of prosthetics
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With the development of modern technologies, people enjoy their lives with higher level of quality. This results in the extension of average humane life time and the rapid changes of age structure of the population in the world. There are increasing demands for replacing the failed tissues on aged people. For example, if injury occurs on knees, the ability to flex the knee will be restricted due to pain. Deterioration of the knee joint would make it difficult to perform everyday activities. Even when you lie and sit, it still feels painful. Knee replacement surgery is a common solution to relief for the pains. These rapid increasing demands of implant demonstrate the new generation of implant materials with better mechanical properties and higher biological performance for the expectation of longer life.
There are many definitions of biomaterial, which
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Since human recognize the material, biomaterials have had initial development. As early as 3500 BC, the ancient Egyptians used sutures made of cotton fiber or horse hair, and in 16th century gold plate was used to repair jaw bone and ceramic materials were used to make dedendum, and so on. With the development of medicine and materials science, especially the success of the research and development of new materials, such as the rapid development of polymer materials in the 1940s provides a great opportunity for the research and application of biomaterials. It could be said that in addition to the brain and most
At the moment, the main objective for scientists and engineers is to develop surgery into a minimal invasive method and nanote...
My name is Lakitta Beverly. I am a junior at Mississippi State University majoring in Kinesiology with a concentration in CLEP (Clinical Exercise Physiology). Throughout high school, I experienced patellar dislocation, which is the topic for today’s Technical Research Report. Patellar dislocation is an injury of the knee. Typically, it is caused by a direct blow or a sudden twist of the leg. It occurs when the patellar slips out of its normal position in the Patellofemoral groove and causes intense pain and swelling of the knee. Patellar dislocation can be characterized as objective patellar instability, potential patellar instability, and episodic patellar instability. (Cerciello, 1) Episodic patellar instability is one of the major categories
The are generally four kinds of substitute constituent utilized in THA that are metal-on-metal, metal-on-plastic, and ceramic on ceramic, ceramic on plastic. Types prosthesis utilized is reliant on the needs of patient and the procedure of the surgeon. All hip replacements allocate one thing in common: they contain a ball-and-socket joint. Which materials are utilized in the ball and in the socket, that jointly is shouted the “bearing” like a bearing in a car has the possible to alter the long-term durability of the combined replacement.
Alumina and zirconia ceramics have been widely used in orthopaedic hip replacements for the past 30 years. The advantage of using these was lower wear rates than those observed using polymers and metals. Because of the ionic bonds and chemical stability of ceramics, they are relatively biocompatible and therefore more preferable to use than metals and polymers. Alumina is most commonly used as a femoral head component instead of a metal in a hip prosthesis because this would reduce the polyethylene wear that is generated. Alumina is a desirable biomaterial to use in hard tissue implants because of characteristics like excellent wear resistance, high hardness, bio inert, low abrasion rate and good frictional behaviour. Furthermore, it has excellent surface finish as well as high fatigue streng...
Prosthetics (pronounced prahs-THEH-tiks) is the branch of medicine that deals with the artificial replacement of a missing body part. A prosthesis (pronounced prahs-THEE-sis) is the general term for the artificial part itself that replaces the body part usually lost to disease or injury. Prosthetics has a long history, and recent design advances that use battery power and new lightweight composite materials are making prostheses better and easier to use.
The most common use of biomechanics is in the development of prosthetic limbs used for the handicapped. Most work on prosthetics is done in laboratories where scientists use calibrated machines to test stress and wear of artificial limbs. These days, prosthetics, are made of titanium and lightweight fiberglass to make a near perfect match with most people. The most common prosthesis is the replacement in a below the knee amputation. The American Society of Biomechanics (ASB) held a meeting at Clemson University of 1997 in order to develop a sports prosthesis that would stand up to every day flexing of the knee for performance in sports.
Due to such safety concerns, the manufacturers are facing device recalls for the device such as DePuy Synthes, Stryker, Smith &Nephew, Biomet and Zimmer [2]. As the knee surgery is most common now a day i.e. around 7 million of Americans are living with the surgery. Moreover, the regulatory issues with the devices are leading to the serious issues to the public health with the implantable device. Considering the regulatory aspects, the knee joint prostheses were the post-amendments device classified into class III under section 513(f)(2) of the act. After the petition submitted by Orthopedic Surgical Manufacturers Association (OSMA), the Panel recommended that this device can be reclassified from class III to class II at the public meeting
These kinds of polymers have both some advantages and disadvantages. Although they are bioactive and biodegradable and provide high comppressive strength, Degradation of such polymers leads to undesired tissue response due to producing acid formation in degradation process. Metallic scaffolds are another method for bone repair and regenaration. They provide high compressive strength and enormous permanent strength. Metallic scaffolds are mainly made of titanium and talium metals. The main disadvantages of metallic scaffolds are not biodegradable and also discharge metal ions. Recent studies in metallic scaffolds mainly focus on biodegradable materials which can be used improve bioactivity of metals such as titanium.
Total Hip Replacement (THR) is a surgical procedure that relieves pain from most kinds of hip arthritis, thus helping to improve the quality of life for the majority of the patients that undergo the operation. Arthritis simply means "inflammation of a joint." Arthritis can occur in any joint in the body. The main symptom of arthritis is pain which usually worsens with activity and weight bearing. This pain may be relieved most of the time through rest. There are over 100 types of arthritis but less than a handful account for over than 95 percent of the hip replacements that are performed. Some of these include Osteoarthritis (causes deterioration of the cartilage and the growth of bone spurs), Rheumatoid arthritis and Osteonecrosis of the femoral head. Doctors suggest that before considering hip replacement surgery for arthritis that the patient tries a number of non-operative interventions. Your doctor may have you consider little things such as weight loss (most arthritis is caused due to the weight bearing on a joint), activity modification or even the use of a cane. Patients should consider THR when daily living activities become harder to accomplish due to the pain. These activities would include walking, climbing stairs or other moderate pastimes. Anti-inflammatory medications which will help reduce the inflammation from the arthritis and reduce your pain may also be prescribed by the patient's doctor.
When an athlete catches the sound of their knee crack and pop, they better prepare themselves for a long journey. The Center for Injury and Policy (CIRP), from Science Daily, reports that, “Knees are the most accident prone part of the body in high school athletes.” Knee injuries are very common; in fact, they are responsible for 45% of the injuries that occur in high school athletics across America. Knee injuries are well known to not just those in the medical field, but also to athletes. Injuries to the knee are caused by many factors, and what happens after the injury has taken place is what’s most concerning (Science Daily).
The first prosthetics that have been recorder were used by the Egyptians in 950 B.C. to 710 B.C. to look whole and anatomically complete, rather than being functional. In 300 B.C., an artificial below the knee limb made out of iron and bronze with a wooden core was found in Italy. This was later called the Capua leg. Most of the prostheses around the middle ages were made out of iron, bronze, or wood, but they did not look like a normal limb; instead, the prosthetics used before looked like pegs or hooks (Norton, 2007). Also, prosthetics were only given and fitted to those people who could afford them and needed them for battles, such as knights. Knights were given and fitted prosthetics not for functionality, but to hold up their shields and for battle purposes. During the renaissance period, steel and copper have been incorporated to make prosthetics. After the World War II, wooden and leather prosthetics were made, although there were many caveats regarding the materials used. The prosthetics were too heavy and the leather absorbed too much perspiration, thus, making it hard to
The name – knee replacement, is self-explanatory itself. It is a surgery, in which the diseased, or worn, bone or cartilage in the knee joint is replaced. An artificial joint is made from plastic, or metal and is fitted in the place of the damaged cartilage. This allows the patient to move the joint, and hence the legs just like the one with natural joint. There are two types of knee replacement surgeries:
Many great inventions have been made through research in biomedical engineering, for example, genetic engineering, cloning, and insulin. After insulin has been invented, there are still a lot of problems with the purity and the quantity of the insulin produced. Biomedical engineering devised a way to produce large quantities of insulin with a higher level of purity, which has saved a lot of human lives. Although biomedical engineering just been officially founded 200 years ago, its practice has been with us for centuries. According to The Whitaker Foundation website, 3,000-year-old mummy from Thebes, which uncovered by German archeologists, with a wooden prosthetic tied to its foot to serve as a big toe is the oldest known limb prosthesis and Egyptian listen to the internal of human anatomy using a hollow reed, which is what today’s stethoscope. No matter what the date, biomedical engineering has provided advances in medical technology to improve human health. These advances by biomedical engineering have created a significant impact to our lives. I have determined to become a biomedical engineer. Biomedical engineering will have a good prospect because it will become one of the most important careers in the future.
By convention, the field of healthcare research was entirely occupied by physicians and doctors. They were the ones who came up with new methods to treat diseases and get better results from diagnostic tests. Technology, on the other hand, was always looked at as a way to solve problems that we faced that didn’t pertain to the medical sector. It was employed to enhance the quality of life and make day to day work easier. But as technology progressed, so did the areas of application. The structural balancing techniques which were previously used to hold a building steady were now being used to develop near-perfect artificial joints and prosthetic limbs. Transparent polymers, developed to enhance robotic vision, were being suggested as a candidate for an artificial lens for the human eye. Before anyone could even understand what was happening, engineering had taken up the mantle to further medical technology to dizzying new heights.
The field of regenerative medicine encompasses numerous strategies, including the use of materials and de novo generated cells, as well as various combinations thereof, to take the place of missing tissue, effectively replacing it both structurally and functionally, or to contribute to tissue healing[29]