Superior High School students Mark Purcell, left, and Kaitlyn Forester tie a knot to a plaster bone and bucket to secure its position before beginning the process of adding weight on Feb. 6 in Lee Sim ...

A joint is held together by ligaments which give the joints their stability. Cartilage is found at the ends of bones and where joints meet. Tendons attach muscles to the skeleton. Synovial joints ...