Adravanti, P. and Vasta, S. 2017. Varus-valgus constrained implants in total knee arthroplasty: indications and technique. Acta Biomedica Atenei Parmensis. 88, 2 -S (Jun. 2017), 112–117. DOI:https://doi.org/10.23750/abm.v88i2 -S.6521.