- Discussion:
- typically the
posterior column remains intact w/ a burst frx;
- w/ severe injury, anterior angulation may damage posterior ligamentous ligament complex, creating an
unstable burst frx;
- w/ further axial loading, inferior facets of upper vertebrae wedge apart superior facets and pedicles of the
fractured lower vertebral body;
- result is saggital frx of lamina which either separates from base of the pedicles from the body
or splits inferior body into right and left halves w/ their pedicles attached;
- Dural Tear:
- w/ neurologic deficit in pt w/ burst frx & laminar frx, be aware that dural
laceration w/ impaled nerve roots can be entrapped in laminar fracture;
- Neural Injury:
- w/ post elements injury, neurologic injury is present in 50% of cases;
- neural injury may be caused by neural entrapment in laminar fractures;
