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Interfascicular fasciculus

Interfascicular fasciculus --> semilunar fasciculus

a compact bundle composed of descending branches of posterior root fibres located near the border between the fasciculi gracilis and cuneatus of the cervical and thoracic spinal cord; it corresponds to the septomarginal fasciculus, Hoche's tract, or oval area of flechsig in the lumbar, and to the triangle of Philippe-Gombault in the sacral spinal segments; like these, it can be demonstrated only in cases of demyelination resulting from dorsal root lesions.

Synonym: fasciculus semilunaris, fasciculus interfascicularis, comma bundle of Schultze, comma tract of schultze, interfascicular fasciculus.


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