1. Lesions of the suprapatellar plica;Pipkin;J Bone Joint Surg [Am],1950
2. So-called synovial shelf in the knee joint;Mizumachi;J Jpn Orthop Assn,1948
3. Atlas of arthroscopy;Watanabe,1969
4. Normal arthroscopic findings in the knee joint in adult cadavers;Iino;J Jpn Orthop Assn,1939
5. Arthroscopy of the plicae: synovial folds and their significance;Patel;Am J Sports Med,1978