Sacrum and coccyx Flashcards
What features may be identified along the intermediate sacral crest?
The mammillary process of S1 and the sacral cornu of S5.
What muscles may attach to the first sacral vertebral body?
Psoas major.
What features may be identified along the lateral sacral crest?
S1 transverse tubercle, sacral tuberosity of S2, transverse tubercles of S3, S4, and S5.
What is the name of the joint formed by the sacral tuberosity?
The accessory sacro-iliac joint.
How many synovial joints are typically present at sacrum?
Four
What forms the posterior boundary of the first coccygeal spinal nerve intervertebral foramen?
Sacral Cornu, coccygeal Cornu, superficial dorsal sacrococcygeal ligament, intercornual ligament.
What forms the inferior boundary for the spinal canal?
The union of the superficial dorsal and deep dorsal sacrococcygeal ligaments.
