Patent ID: 7955396

Claim:
A prosthetic device, comprising: a first component including a female recess; and a second component including a male extension, which male extension has disposed on at least a part of an exterior surface a single helical thread having a groove and a ridge wrapped around a circumference and along a length of the male extension in an essentially continuous manner; wherein the female recess is defined by a recess wall and the female recess tapers from wider to narrower in a direction moving from an exterior surface of the first component towards an interior of the first component; wherein at least part of the exterior surface of the male extension which has disposed thereon the single helical thread tapers from wider to narrower in a direction moving towards a first end of the male extension; wherein the ridge has a first ridge face and a second ridge face, each formed by the groove; wherein the first ridge face and second ridge face of the ridge meet at a ridge apex; wherein the female recess is configured to receive least part of the exterior surface of the male extension which has disposed thereon the single helical thread; and wherein the male extension and the female recess are sized such that, when the female recess receives the male extension, the male extension and the female extension are directly mated together via an interference fit.