This is a great article on Tethered Cord and also on occult type. I like the chart showing clearly where the general populations conus lays, but also how it says that people whose conus lays at the proper, normal heighth still could have TC given symptoms etc.
http://www.medscape.com/viewarticle/405672_6
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Virginia
4 plc fracture of the C1, Tethered Cord, (acquired chiari and elongated brainstem resolved by Tethered Cord surgery); atlanto occipital dislocation and cranial settling all due to equestrian accident,
2004. CC Fusion upcoming.
