DEVICE FOR FEMUR OSTEOSYNTHESIS Russian patent published in 1998 - IPC

FIELD: medicine; treatment of tubular bone fractures. SUBSTANCE: rod is introduced into medullary channel of central fragment till its threaded part enters wound of greater trochanter region. Extended compressing nut is screwed on threaded part of rod. After comparing the fragments rod is moved into middle fragment and then, into distal fragment. Search hole is made in bone. Threaded stud is screwed into rod hole by means of socket wrench through hole in bone till bone smaller diameter is immersed in bone hole. Rod is pressed to cortical plate of lower and middle fragments on side of recess opposite to rest to provide for reposition of fragments. External cortical nut having tapered base is screwed on protruding part of threaded stud on side of its tetrahedral head. Tapered base of nut is immersed in search hole 20 and it locks threaded stud in it. Plate with slot, type "tuning fork", is placed on threaded stud 6, and 1-2 more holes are drilled through it. Then extended compressing nut protruding above skin is screwed by means of socket wrench onto threaded part of rod till its tapered head is immersed, it rests on greater trochanter, and required compression is created. In this case, extended compressing nut is positioned on threaded part of rod, on level necessary to give device length equal to length of patient's bone. EFFECT: provision for stable compressing and locking osteosynthesis. 2 cl, 4 dwg