An Arthrogram is a procedure usually performed under imaging guidance (using equipment such as an X-ray, CT or Ultrasound) that involves introducing a needle into any joint of the body. It usually involves the injection of contrast (X-ray dye) to confirm the correct depth and position of the needle. If used solely as a pain relieving procedure, local anaesthetic and cortisone may be injected, or other healing medications, such as Autologous Blood Injection (ABI) .