Pseudosubluxation of Cervical Spine

  • Etiology: physiologic ligamentous laxity in children < 8 years old, usually at C2-C3, less often at C3-C4
  • Imaging: < 3mm of subluxation at C2-C3 is OK, assess by posterior cervical line which is line drawn from C1-C3 and which touches anterior aspect of posterior arches – anterior aspect of posterior arch of C2 should come within 1-2 mm of posterior cervical line

Cases of Pseudosubluxation of Cervical Spine