Chondromalacia, also known as ârunnerâs knee,â is a condition where the cartilage on the undersurface of the patella (kneecap) deteriorates and softens.our kneecap normally resides over the joint of your knee. When you bend your knee, the movement causes the backside of your kneecap to glide over the bones of the knee, specifically the femur or thigh bone. Tendons and ligaments attach your kneecap to your shinbone and your thigh muscle to the kneecap.
A flyback transformer (FBT), also called a line output transformer (LOPT), is a special type of electrical transformer. It was initially designed to generate high voltage sawtooth signals at a relatively high frequency.
An El Al Boeing 737-800 on pushback at ZÃ¼rich Airport. In aviation, pushback is an airport procedure during which an aircraft is pushed backwards away from an airport gate by external power. Pushbacks are carried out by special, low-profile vehicles called pushback tractors or tugs. Although many aircraft are capable of moving themselves backwards on the ground using reverse thrust, the resulting jet blast or prop wash may cause damage to the terminal building or equipment. Engines close to the ground may also blow sand and debris forward and then s