Limbus Vertebra

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Limbus vertebra is the marginal dislocation of nucleus pulposus, another mode of disk her-niation. It occurs typically in the anterior or posterior edge of the vertebral body, radio-graphically manifesting as the division of a small fragment with a cleavage (Fig. 9.60A). A fragment is not present in every case (Fig. 9.61A). Pinhole scintigraphically, the lim-bus with sclerosis is characterized by intense uptake localized to the anterior or posterior edge of an endplate, beaking outward when

Schmorl Nodes Vertebra

Fig. 9.59A, B Schmorl's node. A Axial CT scan through the upper part of the LI vertebra shows a small, round lucency surrounded by a sclerotic rim in the cancellous bone (open arrow). B Posterior pinhole scan shows very intense tracer uptake surrounded by less intense uptake zone in the right centrolateral aspect of the upper endplate of the LI vertebra, matching the CT scan defect (arrows). The disk space is moderately narrowed and the regional endplates concentrate tracer intensely due to associated osteochondrosis (arrowheads)

Fig. 9.59A, B Schmorl's node. A Axial CT scan through the upper part of the LI vertebra shows a small, round lucency surrounded by a sclerotic rim in the cancellous bone (open arrow). B Posterior pinhole scan shows very intense tracer uptake surrounded by less intense uptake zone in the right centrolateral aspect of the upper endplate of the LI vertebra, matching the CT scan defect (arrows). The disk space is moderately narrowed and the regional endplates concentrate tracer intensely due to associated osteochondrosis (arrowheads)

Vertebra Limbus

Fig. 9.60A, B Limbus vertebra. A Lateral radiograph of the L5 vertebra in a 53-year-old man with back pain re veals a small bone chip (large arrow) that is incompletely detached from the upper anterior edge with a lucent cleavage (small arrows). The disk space is slightly narrowed (arrowhead). B Lateral pinhole scintigraph shows very intense tracer uptake surrounded by less intense uptake in the area under study (arrow). The affected upper endplate of L5 and the apposing lower endplate of L4 concentrate tracer intensely with narrowed disk space between, indicating early osteochondrosis that may well be related to disk herniation (arrowhead)

Fig. 9.60A, B Limbus vertebra. A Lateral radiograph of the L5 vertebra in a 53-year-old man with back pain re veals a small bone chip (large arrow) that is incompletely detached from the upper anterior edge with a lucent cleavage (small arrows). The disk space is slightly narrowed (arrowhead). B Lateral pinhole scintigraph shows very intense tracer uptake surrounded by less intense uptake in the area under study (arrow). The affected upper endplate of L5 and the apposing lower endplate of L4 concentrate tracer intensely with narrowed disk space between, indicating early osteochondrosis that may well be related to disk herniation (arrowhead)

Fig. 9.61A, B Limbus vertebra with infraction. A Lateral radiograph of the lumbar spine in a 31-year-old female with low-back pain shows a triangular bone defect in the anterior edge of L4 lower endplate (arrow). The disk space is narrowed and the endplates sclerotic (arrowhead). B Lateral pinhole scan reveals intense tracer uptake in the triangular defect and sclerosed endplates with narrowing of the disk space (arrowhead)

fragmented (Fig. 9.60B). Apposing endplates show increased uptake and the disk space between is narrowed, reflecting diskovertebral osteochondrosis and disk degeneration.

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Responses

  • wilimar
    What is limbus vertebrae?
    8 years ago

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