초록 ▼

A fenestrated hollow hip screw adapted for introduction therethrough of bone cement into a bone region affected by osteoporosis for increase of overall fixation of hip fractures, such as comminuted intertrochanteric types, and similar types of femoral fractures, even in the opposite distal end of th

A fenestrated hollow hip screw adapted for introduction therethrough of bone cement into a bone region affected by osteoporosis for increase of overall fixation of hip fractures, such as comminuted intertrochanteric types, and similar types of femoral fractures, even in the opposite distal end of the femur where such a device may be appropriately utilized.

대표청구항 ▼

A hip screw for reducing bone fractures under highly advanced conditions of bone osteoporosis, comprising (a) an elongated body including a forward portion and a rear portion, said body containing a continuous through-bore extending between said forward and rear portions, said forward portion contai

A hip screw for reducing bone fractures under highly advanced conditions of bone osteoporosis, comprising (a) an elongated body including a forward portion and a rear portion, said body containing a continuous through-bore extending between said forward and rear portions, said forward portion containing at the remote end thereof an opening communicating with said through-bore; (b) said body forward portion including an external spiral screw thread having a plurality of longitudinally spaced turns extending generally transversely of said elongated body; (c) said body portion containing a plurality of longitudinally spaced fenestrations in one side thereof and communicating with said through-bore, each of said fenestrations being arranged between a pair of adjacent turns of said screw thread; and (d) means connected with said body rear portion for delivering bone cement material to said through-bore, said cement material passing through said through-bore and exiting said body via said fenestrations and said forward portion open end, said spiral screw thread assisting the distribution of said cement material in a pattern surrounding said body forward portion to prevent said screw thread from being removed from the osteoporotic bone during healing of the fracture.