A jamshidi assembly comprising: an inner cannulated member including a first end, a second end, and a main body portion, an inner cannulated member handle adapted for gripping with a hand being secured to said first end thereof, said inner cannulated handle member including an opening positioned to allow insertion of various medical devices through an interior passage of said inner cannulated member, a threaded sleeve secured about said main body portion of said inner cannulated member, a stylet including a first end, a second end and an elongated body there between, said elongated body sized to fit through said interior passage sufficiently for said second end of said stylet to protrude from said second end of said inner cannulated member when inserted through said opening thereof, an outer sleeve member, said outer sleeve member including a first end, a second end and a main body portion, said outer sleeve member including internal threading, said outer sleeve member being cannulated to include an interior hollow portion, said interior hollow portion threadably engaged to an outer diameter of said main body portion of said inner cannulated member by engaging said internal threading with the threading of said threaded sleeve, said second end of said outer sleeve member including a working member, wherein said working member is constructed and arranged to increase the size of an aperture created by said interior hollow portion and is a tapping device having a pointed point end and a threaded portion, said threaded sleeve having a thread pitch that is the same as a thread pitch of said threaded portion, said first end of said outer sleeve member including an outer sleeve handle, whereby rotation of said outer sleeve handle causes linear movement of said outer sleeve member with reference to said inner cannulated member such that said outer sleeve member penetration into a bone member is adjustably controlled by rotation of outer sleeve handle with the linear movement of said outer sleeve member with reference to said inner cannulated member being at the same rate or distance as said threaded portion moves within the bone member. an inner cannulated member including a first end, a second end, and a main body portion, an inner cannulated member handle adapted for gripping with a hand being secured to said first end thereof, said inner cannulated handle member including an opening positioned to allow insertion of various medical devices through an interior passage of said inner cannulated member, a threaded sleeve secured about said main body portion of said inner cannulated member, a stylet including a first end, a second end and an elongated body there between, said elongated body sized to fit through said interior passage sufficiently for said second end of said stylet to protrude from said second end of said inner cannulated member when inserted through said opening thereof, an outer sleeve member, said outer sleeve member including a first end, a second end and a main body portion, said outer sleeve member including internal threading, said outer sleeve member being cannulated to include an interior hollow portion, said interior hollow portion threadably engaged to an outer diameter of said main body portion of said inner cannulated member by engaging said internal threading with the threading of said threaded sleeve, said second end of said outer sleeve member including a working member, wherein said working member is constructed and arranged to increase the size of an aperture created by said interior hollow portion and is a tapping device having a pointed point end and a threaded portion, said threaded sleeve having a thread pitch that is the same as a thread pitch of said threaded portion, said first end of said outer sleeve member including an outer sleeve handle, whereby rotation of said outer sleeve handle causes linear movement of said outer sleeve member with reference to said inner cannulated member such that said outer sleeve member penetration into a bone member is adjustably controlled by rotation of outer sleeve handle with the linear movement of said outer sleeve member with reference to said inner cannulated member being at the same rate or distance as said threaded portion moves within the bone member.