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A great engineer, viewing a splendid locomotive awaiting its start on a transcontinental trip, said: "You have no idea how simple is its mechanism. We have invented away the complications." For some of the noninfected derangements of the knee, including sprains and many of the cartilage injuries, I have found the mere incorporation, in the Ace bandage, of two rather long ovoid pieces of sponge rubber, on either side of the patella, to be remarkably effective. For an adult, the three-inch bandage is used. One-fourth inch sponge rubber is selected. Two pieces are shaped, each about 8 inches long and 2½ inches wide, and with a small crescent (about one sixth of a circle) cut out to fit the sides of the patella. This sponge rubber will fit better if each piece is beveled about its entire periphery. This combination bandage is applied with the knee in about 10 to
Truslow W. SIMPLIFIED SUPPORT FOR KNEE INJURIES. JAMA. 1938;110(4):285–286. doi:10.1001/jama.1938.62790040003010a