College of Massage Therapists of British Columbia (CMTBC) Practice Exam

What is the open packed position of facet joints?

1. Flexed position

2. Neutral position

3. Extended position

4. Fully rotated position

The correct answer is: Neutral position

The open packed position of facet joints refers to the position of the joint where the surfaces are least congruent and the joint capsule is most relaxed, allowing for maximum mobility without restriction. This position typically occurs when the spine is in a neutral alignment—neither flexed nor extended—because it allows for the greatest amount of space within the joint and lessens the potential for compression or impingement of surrounding structures. In a neutral position, the vertebrae are not in extreme positions, which minimizes the risk of joint stiffness or pain. This position facilitates better gliding and movement of the facet joints, essential for spinal mobility. Understanding this position is crucial for practitioners, as it informs them about joint mechanics and is essential in assessing spinal health and function.