Articles: nerve-block.
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Local anesthetic blocks have been used in a variety of ways in the management of headache. Some practitioners use blocks of the supraorbital and greater occipital nerves as a form of treatment. Although the effect of each block is limited in duration, a series of injections appears to provide sustained relief. ⋯ On the other hand, blocks can be used to diagnose cervical sources of headaches. When performed under controlled conditions, such blocks can identify cervical sources of pain in a substantial proportion of patients with headache after whiplash. Positive blocks also predict good outcome from radiofrequency neurotomy of the nerve blocked.
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Sciatic nerve blocks through lateral approaches in the popliteal fossa have been proposed. We describe a new medial approach to the sciatic nerve at this level. ⋯ We describe a new medial approach to the sciatic nerve in the popliteal fossa. More studies will be required to demonstrate the technique is effective and safe.
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AJNR Am J Neuroradiol · Oct 2004
Selective lumbar nerve root blocks with CT fluoroscopic guidance: technique, results, procedure time, and radiation dose.
CT fluoroscopy may be used as a rapid and effective means of guiding needle placement when performing selective lumbar nerve root blocks. In this set of patients, the average external radiation dose was 0.73 mrem per procedure, with an average of 2 seconds of CT-fluoroscopy time and four images per procedure. Average physician room time was 7 minutes. Use of intermittent CT fluoroscopy during lumbar selective nerve root blocks can result in minimal radiation dose levels and procedure times that are comparable to fluoroscopic guidance.