KEY FACTS Terminology Fracture(s) of C1 ring Imaging Multiple fractures of C1 arch (2-, 3-, and 4-part fractures) Combined offset of lateral masses of C1 relative to lateral margins of C2 ≥ 7 mm suggests interruption of transverse ligament Avulsion…
KEY FACTS Terminology Bony disruption of occipital condyle You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology Disruption of stabilizing ligaments between occiput and C1 Imaging Widened prevertebral soft tissues (nonspecific) Condylar sum > 4.2 mm has 100% sensitivity, 69% specificity, and 76% accuracy Increased basion-dens interval (BDI) distance > 8.5 mm (CT in…
Craniocervical Junction Occipital condyle fractures are classified into 3 types. Type I = comminuted fractures due to axial loading; stable if contralateral side is intact Type II = occipital condyle fracture with skull base fractures; most of these are stable…
KEY FACTS You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Accentuated thoracic ± reduced normal cervical, lumbar lordotic spinal curvature Normal 20-40°, hyperkyphotic if > 40° Curvature secondary to vertebral anomalies, degenerative spine disease, or idiopathic causes Imaging Accentuated dorsal thoracic curvature on lateral image Look for…