“…The following complications were described while in the prone positions [ 28 , 30 , 42 , 43 , 65 , 105 , 124 , 144 , 218 , 272 , 301 ] facial oedema (20–30 %), pressure ulcers around the face/cornea, pelvis, knee (approximately 20 %) [ 234 ] ‘intolerance’ while in the prone position (= coughing, compaction, respiratory problems approximately 20 %), cardiac dysrhythmias (approximately 5 %), necrosis of the mamilla, pressure ulcers of the tibial crest (individual reports), dislocations of the tracheal tube or venous/arterial lines (approximately 1–2 %) [ 105 ], nerve damage (two case studies regarding brachial plexus lesion [ 119 ]) (evidence level 2b). In this regard, it is necessary to consider that complications also occur in the supine position and a comparison of the incidences of position-related complications for the prone position has not previously been sufficiently studied.…”