“…Though the current opinion today tends towards the view that popliteal cysts develop from distension of a communicating knee bursa (Wilson et al 1938, Morscher 1957, Hoffman 1963, Gristina & Wilson 1964, Bryan et al 1967, Perri et al 1968, Goldstein & Dickerson 1974, Smillie 1974, the concept of a hernial origin still widely prevails (Cravener 1932, Haggart 1938, Edmunds & Hebble 1939, Meyerding & van Demark 1943, Kuhn & Hemphill 1944, Sachs & Rubinstein 1946, Wiles 1949, Lewin 1952, Kirpila & Ripatti 1958, Beatty 1959, Colombo 1965, Wieser et al 1967, Solomon & Berman 1972, Pinder 1973, Aegerter & Kirkpatrick 1975.…”