US Wellness Beef Patella Joint Femur Bones are ideal bones for making great gelatin and bone broth recipes. These bones are rich in cartilage and connective tissue which will fall into grains of sand like particles after 30 plus hours in the stock pot. Consuming tasty stock and gelatin recipes is a fun way to slow down the aging process and reduce aches and pains. Each package contains 1 or 2 femur patella bones.