1. correction of an unstable part of the spine by joining two or more vertebrae; usually done surgically but sometimes done by traction or immobilization; [syn: fusion, spinal fusion]
WordNet (r) 3.0 (2006):
spinal fusion
n 1: correction of an unstable part of the spine by joining two
or more vertebrae; usually done surgically but sometimes
done by traction or immobilization [syn: fusion, spinal
fusion]