Ed, you are correct. Most of the back sinew on beef gets cut up into steaks. Rib roasts & whole sirloin strips have great sinew but a person would have to remove the fat to get to the sinew..then remove the sinew and tie the fat back on top of the roast before roasting it whole. I don't think too many chefs or meat processors would go to that much trouble unless that sinew would sell for a big price.