It's worth cleaning – The examination of the female taper could identify a particular cause of trunnionosis at revision 16 years after total hip arthroplasty

Adverse reaction to metal debris (ARMD) is an issue in metal-on-metal (MoM) total hip replacements (THR). It mainly affects large-head MoM THR, whereas 28–32 mm pairings are associated with low long-term revision rates. However, the bearing surface not necessarily only cause of debris. This report documents advanced analysis retrievals a particular trunnionosis late failure small diameter THR and illustrates importance cleaning taper when seating head THR. A 65-year-old patient was revised due ARMD 16 years after Debridement exchange inlay had been performed through anterior approach. While cup outer were accessible direct by optical coordinate measuring machine, female be analysed indirectly imprint. Wear from within expected ranges. The identified bone fragments, which contributed trunnionosis. Failure caused bearing, but can Bone fragments contact this case highlight meticulous before head, avoid