Based on OBB (oriented bounding box), this algorithm constructs an OBB for each bone model and computes intersect tests of the OBB with separation axis theory.

Objective To evaluate clinical effects of reduction, bone fusion and anterior cervical spine plate internal fixation on the treatment of traumatic spondylolisthesis of the axis (TSA).

The role of ET axis in mitogenesis, apoptosis inhibition, invasiveness, angiogenesis and bone remodeling provides evidences of the importance of ET axis in cancer.