[Radiological examination of knee prostheses].

After defining the respective indications for the various knee prostheses: single-compartment, three-compartment sliding and hinge prostheses, essentially based on the preoperative radiological assessment, the authors emphasise the value of such films in operative planning. They then describe the radiological criteria of correct implantation of the three different types of prosthesis. Lastly, they stress the value of regular radiological follow-up of these arthroplasties looking for possible complications such as instability, loosening, wear and infection, which may alter the patient's osteoligamentous capital and his functional prognosis.