This is not new, but new to me, and I found it interesting and informative.
http://thejns.org/doi/pdf/10.3171/spi.2006.4.2.123?cookieSet=1
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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.
