This is a real-life example that illustrates how to combine several different principles for successful spinal anesthesia (or lumbar puncture) in patients with degenerative scoliosis. This was performed by a junior trainee and relative novice in regional anesthesia.
These principles are all discussed at more length in other videos:
(1) Ultrasound imaging in the scoliotic spine -    • Ultrasound Imaging for Neuraxial Bloc...  
(2) the "Spinning on the AC" maneuver -    • "Spinning on the AC" - US Imaging for...  
(3) The paraspinous approach -    • Paraspinous (Paramedian) Approach to ...   and    • Ultrasound Imaging for the Paraspinou...  
(4) Effective needle handling -    • Needle Handling Skills for Successful...  

All content represents my personal opinion, and is presented solely for educational purposes. It does not constitute professional medical advice.