NEUROSURGERY Spine Conference

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Presentation transcript:

NEUROSURGERY Spine Conference Stanford Hospital and Clinics September 14, 2009

Case #1 HPI: JF is a 40 yo M s/p bicycle vs. car accident without a helmet. The car was travelling 10-15mph. He was hit from the left side and thrown over the hood of the car and struck the pavement. No LOC. He was brought in by EMS c/o of 10/10 nonradiating neck and upper back pain on arrival to ER. He c/o numbness/tingling on the left 1st and 2nd digits. No weakness, bowel/bladder dysfunction, saddle anesthesia.

PMH: PSHx: Meds: All: FHx: SHx: ROS: Heart murmur Angina Repair of rt first finger from accident Meds: ASA, NTG prn All: NKDA FHx: HTN, diabetes SHx: Spent time in prison Smokes 5-6 cigarettes/day Denies alcohol/illicit drugs ROS: constipation

Physical Examination: VSS Laying supine with a rigid neck brace in moderate distress GCS 15, OX3 CN II-XII intact Strength 5/5 Sensation intact Rectal tone normal DTR 1+ No clonus/Hoffman’s sign Skin abrasions/soft tissue hematoma over the left temporo-parietal region

CT C-spine

MRI C-spine

diagnosis: Tear drop fracture Results from hyperflexion or axial loading with the neck flexed Complete disruption of all ligaments, facet joints and intervertebral discs Posterior displacement of the inferior margin of the fractured vertebral body Often causes quadriplegia or anterior cord syndrome Radiographically can find a small chip of bone at the anterior inferior edge of VB involved

Tear drop fracture vs. avulsion fracture Small chip of bone off anterior inferior VB due to hyperflexion with axial loading Retrolisthesis of involved VB Fracture of VB and/or posterior elements Prevertebral soft tissue swelling unstable Small chip of bone off anterior inferior VB pulled off by traction of the ALL in hyperextension No malalignment of VB No fracture of VB or posterior elements No prevertebral soft tissue swelling stable

Treatment Plan: Cervical Traction? Collar? Halo vest? Anterior Decompression and Fusion alone? Posterior Decompression and Fusion alone? Combined Ant/Post? How many levels?

C4-5 ACDF; L C4-5 posterior fusion with interspinous wiring

Case #2 HPI: GT is a 47 yo male s/p fall off a bridge 4-5 feet from his mountain bike and hitting his head/neck against some rocks. He was wearing a helmet. + LOC. Immediately after arousing, the pt had LUE paralysis and LLE paresis. He was c/o left arm pain and allodynia.

PMH: PSHx: All: Meds: FHx: SHx: ROS: none NKDA N/C Denies tobacco use; drinks 2 glasses of wine/wk ROS: As per HPI, o/w negative

Physical Examination: VSS GCS 15, OX3 CN II-XII intact Strength 5/5 RUE, RLE; 0/5 LUE, 4/5 LLE LUE allodynia, all others intact sensation Rectal tone normal DTR 3+ RUE, RLE, LLE; O LUE + Bilat Babinski; Clonus RLE

CT C-spine

MRI C-spine

diagnosis: Dens fracture type IIA

Treatment Plan: Steroids? Cervical Traction? Collar? Halo vest? Anterior Decompression and Fusion alone? Posterior Decompression and Fusion alone? Combined Ant/Post? How many levels?

Posterior C1-C2 Fusion; C5-6, C6-7 ACDF

Case #3 HPI: RJ is an 85 yo male s/p fall from 8-ft ladder while filling a water tank, and landed on his head against some rocks. + LOC.

PMH: PSHx: All: Meds: FHx: SHx: ROS: HTN, BPH, CAD, HC, L retinal blindness PSHx: Angioplasty, Atherectomy, Appy All: NKDA Meds: Terazocin, Hyzaar, Simvastatin, ASA, Xalatin eye gtt FHx: N/C SHx: Denies tobacco use; occ ETOH ROS: As per HPI, o/w negative

Physical Examination: VSS GCS 14, OX2 (name, place) CN II-XII intact, except L pupil does not react Strength 5/5 Sensation intact Rectal tone normal DTR 1+ R knee, all others 0/4 + Bilat Babinski No Clonus

CT C-spine

MRI C-spine

diagnosis: Dens fracture type III

Treatment Plan: Steroids? Cervical Traction? Collar? Halo vest? Anterior Decompression and Fusion alone? Posterior Decompression and Fusion alone? Combined Ant/Post? How many levels?

Conservative management with aspen collar with close follow-up

Anderson and D’alonzo classification of odontoid fracture Type I Fracture through the tip above transverse ligament Rare Unstable Type II Fracture through the base of the neck Most common unstable Type IIA Like type II but with large bone chips at fracture site Type III Fracture through body of C2 May involve superior articulating surface stable

treatment Type I usually treated with surgery Isolated type II fractures in adults > 50 yo should be stabilized with surgery Early surgery is recommended for all type IIA Type I,II, III may initially be managed with rigid collar Consider surgical fixation for type II and III if displacement > 5mm or inability to maintain alignment with rigid collar In type II, 30% nonunion rate with collar Displacement > 4mm increases nonunion 70% nonunion in displacement > 6mm Surgical options: Odontoid screw C1-C2 arthrodesis: wiring, Harm’s technique, transarticular screw