Radiologic diagnosis of degenerative lumbar spinal instability.

  title={Radiologic diagnosis of degenerative lumbar spinal instability.},
  author={Patrick Dupuis and Ken Yong-Hing and Joseph D. Cassidy and W. H. Kirkaldy-Willis},
  volume={10 3},
A lumbar motion segment is considered to be unstable when it exhibits abnormal movement. This movement can be abnormal in quality (abnormal coupling patterns) or in quantity (abnormal increased motion). This instability can be symptomatic or asymptomatic, depending on the demands made on the motion segment. Pain is a signal of impending or actual tissue… CONTINUE READING