1. Aglietti P, Buzzi R, Insall J (1993) Disorders of the patellofemoral joint. In: Insall JN (ed) Surgery of the knee. Churchill Livingstone, New York, pp 246–251
2. Aglietti P, Insall J, Cerulli P (1983) Patellar pain and incongruence. I. Measurements of incongruence. Clin Orthop 176:217–224
3. Baumgartl F (1964) Das Kniegelenk. Springer, Berlin Heidelberg New York
4. Blackburne JS, Peel TE (1977) A new method of measuring patellar height. J Bone Joint Surg Br 59:241
5. Caton J, Deschamps G, Chambat P, Lerat JL, Déjour H (1982) Les rotules basses—a propos de 128 observations. Rev Chir Orthop 68:317