Penetrating spinal injuries by wood are infrequently reported. They are particularly rare in children. Only 6 cases of wooden fragments causing penetrating intradural spinal injury have been reported. The authors report a case of a 3-year-old girl who suffered a penetrating wound on her lower back after sliding on a wood floor. A portion of the extraspinal part of the wooden splinter was removed prior to presentation; however, a high suspicion for retained foreign body was maintained. Findings on CT were equivocal, but the diagnosis was confirmed on MRI. An incomplete cauda equina syndrome was noted on examination. She was taken to the operating room for removal of the wooden foreign body, repair of a durotomy, and repair of a CSF leak. At 8 months after surgery, the patient had fully recovered without sequelae. The roles of imaging modalities, prophylactic antibiotics, and surgery are discussed.
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- Author or Editor: Gabrielle Santangelox
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Gabrielle Santangelo, Jonathan Stone, Tyler Schmidt, G. Edward Vates, Howard Silberstein, and Pierre Girgis
Gabrielle Santangelo and Daniel M. Sciubba
Gabrielle Santangelo, Thomas A. Pieters, Muhammad I. Jalal, Redi Rahmani, Howard J. Silberstein, and Jonathan J. Stone
OBJECTIVE
While CSF diversion is highly effective at treating hydrocephalus, shunting is unfortunately associated with a very high revision rate. Studies have demonstrated that proximal catheter obstruction is a major cause of failure. A novel proximal access device was developed, and pilot testing was performed in a sheep model of hydrocephalus.
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Hydrocephalus was induced in 8 sheep using a cisternal injection of 4 ml of 25% kaolin, and the sheep were randomized to either a standard ventricular catheter or a novel intraparenchymal stent (IPS). Both groups received identical valves and distal catheters. The novel device included a 3D-printed stainless steel port and a 6 × 40–mm covered peripheral vascular stent. Animals were euthanized for signs of hydrocephalus or at a time point of 2 months. MRI was performed to determine ventricular size. Time to failure and Evans indices were compared using the Wilcoxon rank-sum test.
RESULTS
All 4 experimental devices were placed without difficulty into the right lateral ventricle. There was a trend toward longer survival in the experimental group (40 vs 26 days, p = 0.24). Within the IPS group, 3 of the 4 sheep did not experience clinical symptoms of shunt failure and had an average of 37% decrease in Evans index. While 3 of 4 traditional proximal catheters demonstrated debris within the inlet holes, there was no obstructive material found in the IPSs.
CONCLUSIONS
An IPS was successfully used to treat hydrocephalus in a sheep model. While statistical significance was not achieved, there were clear benefits to using a stent, including a decreased clog rate and the ability to perform a percutaneous revision. Further testing is needed to ensure efficacy and safety prior to human application.
