Arthroscopy elbow, wrist, ankle, foot, and hip. Knee arthroscopy, or arthroscopic knee surgery, is an ineffective surgery that uses arthroscopic surgical techniques. People who undergo this surgery for "wear and tear" joint pain, including osteoarthritis and meniscal tears, usually have high hopes for the results, but repeated scientific studies have show that they actually end up with results that are no better than if they had skipped all of the pain, disruption, and risks of the surgery and instead only did the many hours of required post-surgery physical therapy. It has, in many cases, replaced the classic open surgery (arthrotomy) that
Effect of spaceflight on the human body reduce their aerobic capacity, and slow down their cardiovascular system. As the human body consists mostly of fluids, gravity tends to force them into the lower half of the body, and our bodies have many systems to balance this situation. When released from the pull of gravity, these systems continue to work, causing a general redistribution of fluids into the upper half of the body. This is the cause of the round-faced 'puffiness' seen in astronauts. Redistributing fluids around the body itself causes balance disorders, distorted vision, and a loss of taste and smell. A 2006 Space Shuttle experiment found