Q. What is Spinal Instability? Ans.: A stable structure stands up well, while an unstable structure tends to fall. Similarly, the spine also has to be stable. The human spine is a unique marvel. It is stable as well as flexible Because of the stability we can stand erect our two feet while rest of the animal kingdom has to support themselves on 4 feet (Quadruped). It is flexible, so gymnast can do acrobats and yogi scan do various asanas. Stability of the spine is due to the inter vertebral joints which are positioned against each other as two hand , held (clasped ) in SHAKE HAND position. It prevents one vertebra gliding on the other vertebra. Ashwini Multispeciality Hospital treat for the best spine surgery by best orthopeadic & best neurosurgeon in nashik.