1. The external semilunar cartilage as a complete disc;Young,1889
2. Congenital discoid meniscus;Cave;Am J Surg,1941
3. Injuries of the knee joint;Smillie,1978
4. A series of ten discoid medial menisci;Dickason;Clin Orthop,1982
5. Congenital discoid medial semilunar cartilage;Murdoch;J Bone Joint Surg Br,1956