Lumbar Anomalies Flashcards

1
Q

These occur when the disc material herniates through the growth center of the ring apophysis, isolating the apophysis from the vertebral body. Can occur at the anterior or posterior body margins

A

Limbus bones

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2
Q

Also known as persistent notchord or Cupid’s bow. A common variation in the appearance of the vertebral body, most common in the lower lumbar spine.

A

Nuclear impression

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3
Q

A wide bony defect in the posterior arch of usually more than one segment, with protrusion of the spinal cord contents

A

Spina bifida Vera

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4
Q

Herniation of CSF filled sac

A

Meningocele

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5
Q

Herniation of CSF AND neural elements

A

Myelomeningocele

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6
Q

The lowest lumbar or highest sacral segment demonstrate characteristics of both the lumbar spine and sacrum

A

Lumbosacral transitional vertebra (AKA lumbarization, sacralization)

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7
Q

Transitional L5 segments may be associated with intervertebral disc herniations at the level immediately superior. This is known as:

A

Bertolotti syndrome

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8
Q

Asymmetrical facets. Most common at L5-S1 and L4-5. Best diagnosed on CT or MRI as X-Ray normally exaggerates the appearance of facet asymmetry

A

Facet tropism

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9
Q

Non-union of the secondary growth center for the articular process. Most common at inferior articular processes of L2 and L3

A

Oppenheimer’s Ossicle

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10
Q

The combination of spina bifida oculta of S1 and an elongated spinous process at L5

A

Clasp Knife Syndrome

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11
Q

A horizontal channel in the vertebral body created by the basilar vein

A

Hahn’s (venous) Clefts

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