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Chapter 9 L-spine L-Spine • Largest vertebrae (5) • _________________weight bearing – Common site for _________ L-Spine Characteristics • Smaller ___________ process • Bulkier ___________ process • __________________ • Portion of lamina between superior and inferior articulating process L-spine Characteristics • Intervertebral foramen – ______________ • Zygapophyseal Joints – ______________ Scotty Dogs • Shows: – Transverse process - _________ – Pedicle - Eye – Superior articulating process - Ear – Inferior articulating process - _________ – Pars interarticularis – __________ – Zygapophyseal joint – Between ear and leg Imaging the L-Spine Routine • • • • • • • AP Lateral RPO LPO L-5 S-1 Spot 80kV 40”SID AP L-Spine • Pt supine with ____________ – A Pillow can help – Reduces strain on back – Places Vertebrae ___________ • CR at _______ – ___________iliac crest • Collimate • Suspend respiration Lateral L-Spine • Pt in true lateral – ________for stability • CR at ______________to spinous process RPO/LPO • • • • • Rotate pt _____________oblique CR at _____________to upside ASIS Collimate RPO shows ____________ Look for Scotty Dogs RAO/LAO • • • • • Rotate pt 45° anterior oblique CR at _____________to upside ASIS Collimate RAO shows ____________ Look for Scotty Dogs L5/S1 spot • Pt in lateral • ___________ angle – Parallel with _____________ • CR ___________iliac crest and 2” posterior to ASIS