Interference Screw Mectascrew-C Postmarket Study

This is an observational prospective study with the aim to determine the presence of the composite IS (Mectascrew-C) at 6 months following ACL or PCL reconstruction. Patients with an ACL or PCL tear scheduled for surgery at one of the EOC's hospitals will be enrolled in the study, after the subscription of informed consent. The injured ligament will be restored with an auto- or allograft that will be fixed with a composite IS (Mectascrew-C, 70% PLDLLA, 30% β-TCP, Medacta International SA). The data will be collected from patient's medical histories (data about diagnosis, patients' characteristics and surgery) and after operation, during the orthopaedic follow-up visits, planned at 1, 3 and 6 months, in order to assess the functional outcomes (IKDC objective and subjective) and the knee stability (ROM, Pivot Shift or Reverse Pivot Shift test, anterior or posterior drawer test) of the patients. The treated knee will be also evaluated radiologically with an MRI at 6 months to assess the IS reabsorption. The results of this exam will be correlated to the pre-operative findings and to the functional and clinical outcomes evaluated with the different forms