Grinding Versus Standard Methods for the Treatment of Per-operative Bacteriological Samples Associated With Osteo-articular Sepsis

Inclusion Criteria: * The patient must be insured or beneficiary of a health insurance plan * The patient is cared for in the operating theater because of a suspicion of an osteo-articular infection involving any type of material (protheses, screws, plates) and requiring bacteriological sampling * The patient has not taken any antibiotics within the past 15 days Exclusion Criteria: * The patient is participating in another study * The patient is in an exclusion period determined by a previous study * The patient is under judicial protection * It is impossible to correctly inform the patient * The patient is pregnant, parturient, or breastfeeding * The subject presents with an osteo-articulaire infection without material * Systematic samplings from reversals of aseptic prostheses * Second intervention for the same patient