FIELD: medical engineering. SUBSTANCE: device has two levers. The levers are articulated to each other and linearly movable by means of spring-loaded handle. One lever has rest platform to enable one to set it on the ischial bone fragment from outside. The other lever has catching counterrest to enable one to set it on the ischial bone fragment from inside. EFFECT: enhanced effectiveness of treatment; high reliability in catching and moving the cotyloid cavity. 2 dwg
