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.
Dirty Pilot Tube. Sometimes, a water heater pilot light can become unreliable because the pilot tube is dirty. If this is the case for your pilot light, you can fix it yourself easily. First, turn off the gas and wait for the pilot tube to become cool.Next, use a needle to remove any blockages in the pilot tube.f you can light your water heater pilot light, but it does not stay lit reliably, there are many possible causes for your problem. Among them is a dirty thermocouple. Take a look at your pilot light. Attempt to light it while observing it carefully.