Regardless of the superiority of IIAD to non-iodine drapes, it has recently been concluded by a meta-analysis, that the use of IIAD does not reduce SSI incidence compared to no draping (10). This conclusion has been criticized for being due to type 2 error resulting from the relatively low rate of SSI in clean surgery (16) The review does, however, contain minimal data from the use of IIAD in orthopaedic surgery. The transferability of its conclusions to an orthopaedic setting is therefore questionable.