FIELD: medicine.SUBSTANCE: invention refers to medicine, namely to traumatology and orthopaedics, and aims at reduction and retention of bone fragments of spongy bones during osteosynthesis. Device for reduction and retention of bone fragments of spongy bones during their osteosynthesis consists of crossing two branches interconnected hingedly with a retainer, the distal ends of which are made in the form of hemispheres bent inwards and forked by sharp cone-shaped working teeth restricted by support platforms. Teeth are equipped with detachable support platforms made with sizes and shapes repeating external surfaces of anatomical forms of locomotor segments from spongy bone. Detachable support platforms are provided with holes for teeth to dosed limiting depth of teeth immersion in thickness of cortical layer of spongy bone fragments.EFFECT: invention provides improved conditions and reduced risk of additional traumatisation of the structure and feeding blood vessels during reposition and osteosynthesis of cancellous bone fragments.1 cl, 2 dwg, 1 ex
