Pedicogenic central canal stenosis is associated with which anatomical feature?

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Pedicogenic central canal stenosis occurs when the pedicles are abnormally short, causing the vertebral canal to be narrowed by the pedicle walls themselves. The pedicles form the lateral boundaries of the vertebral foramen, so when they are short they encroach toward the canal and reduce its cross-sectional diameter. This makes the central canal more crowded and susceptible to compression, which is why short pedicles are the feature most associated with this type of stenosis. Long pedicles would leave more space, and normal pedicles would not by themselves cause narrowing; overgrown pedicles can contribute to stenosis too, but the classic association for pedicogenic central canal stenosis is short pedicles.