The first Israeli "awareness day" for joint implants will be held Tuesday under the auspices of the Health Ministry. At least 150,000 Israelis of various ages have had to undergo surgery to replace damaged joints - in the hip, knee, wrist, shoulder, ankle, and other parts of the body. Every year, 5,000 artificial joints are implanted in Israel. The operations have a high success rate and liberate many victims of joint disease from physical limitations and pain. Studies abroad show that, at some time, half of those over the age of 65 will suffer from chronic rheumatic diseases. With the aging of the population, the number of victims will grow, leading to increased disability. The World Health Organization, the White House and the British government have declared the first 10 years of the 21st century "The Bone and Joint Decade." On Tuesday, doctors who specialize in joint diseases will answer questions from those who call *2505. The voluntary organization, Tze'adim, will hold a symposium on the subject at the Air Force House in Herzliya between 10 a.m. and 7 p.m. Tuesday.