Interference screw having a double tapered root

Details Interference screw having a double tapered root Interference screw having a double tapered root

A - Human Necessities

61

B

A61B 17/86 (2006.01) A61F 2/08 (2006.01)

Patent

CA 2142390

An dual tapered orthopedic fixation screw is used to anchor ligament grafts inside a bore in a bone mass. The fixation screw includes a root portion having a front section, a cylindrical center section and a back section. A screw thread is formed over substantially the entire root portion to increase purchase. A taper is formed on the back of the root portion to increase compression of the fixation screw against the ligament graft. The screw further includes a rounded portion that is formed between the taper and the back end of the root to prevent the screw from fraying or cutting the ligament.

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