1. How is the facet jt formed?
2. Where is the facet jt located?
3. What is the function of facet jts?
Answers:
1. Between the superior and inferior articular processes.
2. AA and OA have no true face joints. C3-T12 in frontal plane. Lumbar facets begin in sagittal plane and progresses to frontal plane at L5-S1.
3. Direct vertebral motion, resist shearing and rotational forces. There is increased weightbearing with extension.
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