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(a) Inverted ice cream cone prosthesis from Stanmore implants worldwide (Stanmore, UK) is useful in reconstructing large periacetabular defects and allows immediate weight bearing (b) The stem is hydroxyapatite coated and anchors in the strong posterior ilium while cement screw struts fashioned allow additional mechanical integrity. It can often be combined with a constrained liner to prevent dislocations (c) Postoperative x-ray showing the implant in place
