STUDY DESIGN: Retrospective review of a large series of patients who underwent spinal surgery at a single institution during a 10-year period. OBJECTIVES: To further clarify the frequency of incidental durotomy during spine surgery, its treatment, associated complications, and results of long-term clinical follow-up.SUMMARY OF BACKGROUND DATA: Incidental durotomy is a relatively common occurrence during spinal surgery.ncidental durotomy occurred at the time of surgery in 66 patients (3.1% overall incidence). Incidence varied according to the specific procedure performed but was highest in the group that underwent revision surgery.
Dirty thermocouple: If you can light your pilot light, but the water heater pilot keeps going out, there are many possible causes. One of them is a dirty thermocouple. When you have a problem with your water heater not lighting, look at your water heater pilot light. Inspect the thermocouple to determine if it is dirty.
1 Dirty pilot tube: Sometimes, your gas water heater wonât light due to a dirty pilot tube. 2  Use a needle to remove any blockages when the pilot tube has cooled. 3  Damaged thermocouple: If none of these techniques work, it is possible your thermocouple is damaged and needs to be replaced or repaired. This will cause the thermocouple to turn off the supply of gas, and then your water heater wonât light. 2  To avoid your water heater going out, bend the thermocouple so it is closer to the pilot light. 3  Dirty pilot tube: Sometimes, your gas water heater wonât light due to a dirty pilot tube.