Pain physician
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Approximately 6% to 8% of lumbar pain cases, whether associated with radicular pain or not, may be attributed to the presence of piriformis muscle syndrome. Available treatments, among others, include pharmacotherapy, physical therapy, and injections of different substances into the muscle. Various methods have been used to confirm correct needle placement during these procedures, including electromyography (EMG), fluoroscopy, computed tomography (CT), or magnetic resonance imaging (MRI). Ultrasonography (US) has now become a widely used technique and therefore may be an attractive alternative for needle guidance when injecting this muscle. ⋯ Ultrasound-guided puncture may be a reliable and simple procedure for injection of the piriformis muscle, as long as good education and training are provided to the operator. US has a number of advantages over traditional approaches, including accessibility and especially no ionizing radiation exposure for both health care providers and patients.
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The causes of upper extremity radicular pain or neck pain are varied, often involving disc herniation, spinal stenosis, or spondylosis. Cervical transformaminal epidural steroid injection (C-TFESI) is a common treatment for such pain. However, its efficacy conceivably may depend on needle-tip placement, linking the degree of pain reduction achieved to the pattern of contrast dispersion. ⋯ C-TFESI is an effective treatment for cervical radicular pain that is refractory to conventional conservative remedies. However, therapeutic response to C-TFESI and dispersion pattern of injected contrast failed to correlate in this study.
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Letter Case Reports
Spontaneous resorption of a large lumbar disc herniation within 4 months.