The caudal approach to the epidural space involves the use of a Tuohy needle, an intravenous catheter, or a hypodermic needle to puncture the sacrococcygeal membrane . Injecting local anaesthetic at this level can result in analgesia and/or anaesthesia of the perineum and groin areas. The caudal epidural technique is often used in infants and children undergoing surgery involving the groin, pelvis or lower extremities. In this population, caudal epidural analgesia is usually combined with general anaesthesia since most children do not tolerate surgery when regional anaesthesia is employed as the sole modality.
The main difference between the injection and the tablet form is that once you've had the injection, there's nothing that anyone can do to stop the steroids leaking into your blood stream. If you do suffer any side effects, these may last for up to three weeks. If you're taking tablets, stopping the treatment will usually cause the symptoms to cease within twenty-four hours. In a nutshell - the injection is faster and more convenient than the tablets, but if you're unlucky enough to suffer side effects, you'll be stuck with them for longer.