Fixing implement for fracture at proximal part of femur

PURPOSE: To prevent a neck screw during locking operation from loosening and sliding by providing a fixing implement with a positioning device to resist a rotation, the positioning device acting to lock the neck screw at a predetermined position within a bar. CONSTITUTION: This fixing implement for fracture between trochanters within a bone marrow comprises a bone marrow bar 1 to be introduced into a bone marrow inner tube of a femoral region. The bar within the bone marrow has an angular opening 2 and a coaxial bore 3; the bore 3, in which a device shaped like a lock screw resisting a rotation is positioned, opens in the angular opening 2. In the angular opening 2 a femoral region neck screw 5 shaped like a caput quadratum screw is positioned, at one end of which a coarse screw 6 and four grooves 7 extending in the longitudinal direction are formed. At the lower end of the lock screw 4, a positioning boss 8 is disposed, the boss 8 having such a dimension as to be engaged with one of the grooves 7, and thus the lock screw prohibits the neck screw 5 from rotating. COPYRIGHT: (C)1990,JPO