Computer-assisted techniques were introduced in spine surgery in the 1990s
to improve accuracy and safety of operative procedures. Several reports on
clinical results of computer-aided screw insertion in the cervical, thoraci
c, and lumbar spine as well as the sacro-iliac joints are available. They s
how a significant decrease of screw malplacement rates as compared to conve
ntional insertion techniques.
The quality of preoperative planning of spinal procedures has improved mark
edly by using computer navigation systems. Drawbacks, reliability problems,
and safety issues of computer navigation are discussed. In the near future
, the use of computer guidance for minimally invasive and percutaneous spin
e procedures is expected.