Anatomy
Core concepts
Focus on anatomy that is examinable through palpation and treatment: fascial planes, the deep and superficial back muscles, the thoracolumbar fascia, respiratory diaphragm crura, pelvic floor, and the neurovascular bundles most at risk during manipulation. Know vertebral levels and their landmarks, rib mechanics, sacral landmarks (PSIS, sacral base, ILA), and the course of the vertebral artery through the cervical transverse foramina to the foramen magnum.
Regional priorities
Cervical: the vertebral artery's tortuosity at C1-C2 and its relationship to the atlantoaxial joint underpin pre-manipulative caution. Thoracic: rib angles and costotransverse joints explain respiratory motion restrictions. Lumbar: the multifidus and thoracolumbar fascia link segmental control to load transfer. Visceral: know the attachments of the diaphragm and mesenteric root because they explain referred patterns.
Traps
- Assuming a named landmark is always palpable in every body habitus.
- Confusing nerve root level with the level of the intervertebral foramen it exits (cervical roots exit above their numbered vertebra).
- Forgetting that the vertebral artery is at risk with extension plus rotation, not rotation alone.
- Mixing sympathetic chain levels with parasympathetic outflow (craniosacral).
Rule of thumb
Anchor each fact to a clinical action: if you cannot state what you would do differently because of it, you probably do not need it memorized.
Worked example
A question describes a patient with a C2 rotation restriction and asks which structure warrants screening before any thrust. The answer is the vertebral artery, because the atlantoaxial segment carries the greatest rotational excursion and the artery loops there.