IRCT20191111045400N2 IRCT 2023-07-12 Bojnourd University of Medical Sciences Clinical trial of a new silicone mold for dynamic spacer production during knee surgery: a pilot clinical trial study Clinical trial of a new silicone mold for dynamic spacer production during knee surgery: a pilot clinical trial study 2023-07-23 anticipated 7 Complete https://irct.ir/trial/71149 interventional Randomization: Not randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Blinding description: A person who does not know the type of spacer used for the patient will perform examinations and measurement of variables. N/A Prosthetic Joint Infection. Intervention 1: Intervention group: The group that has spacers that were produced with a mold, In order to use this device in surgery, after sterilization, antibiotic cement is poured into it and after forming, it is placed in the knee space during surgery. Intervention 2: Control group: The group that has manually produced spacers, usually the surgeon makes these spacers manually from bone cement and this bone cement is impregnated with antibiotics. Yes - There is a plan to make this available What will be shared: Only research results can be shared When: beggining of year 2024 To whom: just for researchers Conditions: no conditions required Where to obtain: to the phone number inserted How to obtain: almost one week Comments: