1. Bough BW, Regan BF: Medial and lateral synovial plicae of the knee: Pathological significance, diagnosis and treatment by arthroscopic surgery. Irish Med J 78: 279-282, 1985
2. Fujisawa Y., Matsumoto N., Shiomi S., et al: Problems caused by the medial and lateral synovial folds of the patella (in Japanese). Kansetsukyo 1: 40-44, 1976
3. Hardaker WT, Whipple TL, Bassett FH: Diagnosis and treatment of the plica syndrome of the knee. J Bone Joint Surg 62A: 221-225, 1980
4. Ino S.: Normal arthroscopic findings in the knee joint in adult cadavers. J Jpn Orthop Assoc 14: 467-518, 1939
5. Kurosawa S., Koide S., Yaota T., et al: Disorders of the knee caused by synovial plicae: So-called plica syndrome. Clin Orthop Surg 11: 231-237, 1979