fig9 through 16 the cup 130 is dimensioned such that the rotational means 120 is in tangential registry along one cylindrical face 122 with the rod 136 the threaded bore 132 receives a threaded fixing bolt 110 therewithin to press the rod 136 against the rotational means 120 to fix their relative relationship once appropriate orientation has occurred in its essence the fastener 10 includes a threaded shaft 32 having a first thread pattern 12 at one end and a second thread pattern 14 at an opposite end as shown in fig1 and 2 the first end thread pattern 12 terminates in a point 16 and the threads increase in diameter to form a thread pattern with its spiral increasing as it extends away from the point 16 the second thread pattern 14 has a larger diameter but a similar thread contour which shall be discussed in detail infra preferably the shaft 32 is of variable length and tapers and narrows from end 18 to point 16 please see fig1 and 2 a further nuance of the first and second thread patterns is that the first thread pattern 12 has a coarser thread than the second thread pattern 14 which is a finer thread the point 16 is the point of initiation for insertion into a bone during an orthopedic procedure to.