Arthroplasty is a successful surgical procedure; in 2014, only in Italy, the prosthetic replacement operations achieved the numbers of 175.2901, of which 67.365 are knee’s replacement. A lot of techniques are available for this operation, depending on the positioning of the patient, and lot of used devices too. These are used to immobilize the patient, as the success of the operation depends on the precision of the bone’s cut, although the insertion of the prosthesis. In this thesis, the mechanical properties of three bandages are investigated in laboratory and on cadavers. They are evaluated as a medical bandage to immobilize some parts of the patient during the surgical intervention.