Cervical Extension and Flexion Arthrostim Adjustment Tutorial by pod | Jan 9, 2019 | 3 comments You cannot view this unit as you're not logged in yet. 3 Comments david goodfield on January 10, 2021 at 5:17 pm thank you! Reply Ronald Federico on November 30, 2021 at 10:43 am Learning about the line of drive for each area of the spine was very helpful Reply Lee Zohn on December 11, 2021 at 3:12 am This was excellent! Reply Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.