Swab the area very well and slowly penetrate the 18g pin directly into the abscess. Keep pushing the pin in and gentaly aspirating every few millimeters until you hit the cyst. Slowly aspirate the cyst. You should be able to draw out the initial volume injected and then some blood and puss. You can expect to drain out 3ml from a 2ml injection 4-5 days post injection. This will give your immune system and the anti-biotics the best chance of fighting the infection. Always complete the course of anti-biotics even if the symptoms and swelling subside.
The benefits from the first shot only lasted 2 weeks. The second and third set of injections lasted about 90 days. In November, I was ready to have surgery. My EMG and nerve conduction tests proved that the nerves were "sleeping" before I was. After another MRI, the neurosurgeon said I was a candidate for surgery but I was not able to get the endoscopic type surgery that is less invasive. I would have an incision about 6-8" long. Along with removing the herniation, they would have to increase the size of the hole where the nerve roots were going through.