title: Reply to Comments on Grassi et al.: Clinical outcome and complications of a collagen meniscus implant: a systematic review.
authors.affiliation: Istituto Ortopedico Rizzoli, II Clinica Ortopedica e Traumatologica, Bologna, Italia, alberto.grassi3@studio.unibo.it.
authors.forename: Alberto
authors.initials: A
authors.lastname: Grassi
authors.forename: Stefano
authors.initials: S
authors.lastname: Zaffagnini
authors.forename: Maurilio
authors.initials: M
authors.lastname: Marcacci