The Jamshidi needle is a trephine needle for performing bone marrow biopsy, whereby a cylindrical sample of tissue, a core biopsy specimen, is obtained. It is a cylindrical needle with a tapered cutting tip.
The tapered end reduces the potential of crush artifact.
It is the most commonly used needle for performing bone marrow biopsies.
The device is named for its inventor Khosrow Jamshidi who is an Iranian physician.
It is placed so that the tip is just short of entering the pedicle on the lateral fluoro.
In the AP view the needle tip should be at or just barely lateral to the lateral edge of the pedicle near the equator of the pedicle at 3 or 9 position depending on the side.