Prospective, Randomized Study of 2 Different Wound Dressings

The primary objective of this investigation is to evaluate the performance of a self-adhesive absorbent post-operative dressing coated with a soft silicone layer in minimize the risk of the development of blistering in subjects after hip or knee arthroplasty or spinal surgery in comparison to a standard wound dressing The secondary objectives are to evaluate: * the performance of the dressing * the comfort, conformability and the acceptability of the dressing * pain before, during and after dressing removal * the overall cost regarding dressing wear time, time to do dressing change and personal resources needed