Pain physician
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A high degree of inter-individual differences was noted in human basal pain as well as the reporting of clinical pain, such as postoperative pain. Understanding the effects of common epidemiological variations and preoperative experimental methods of human pain perception may contribute to individualized pain treatment for patients. ⋯ Preoperatively determining the smoking status and history of surgery might serve as predictors for postoperative analgesia in the Chinese population. Additional preoperative pressure pain measurements might be an effective experimental method for predicting postoperative pain.Key words: Epidemiologic, pressure pain, smoking, predicting, surgery, postoperative pain, inadequate analgesia, Chinese population.
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Comparative Study Observational Study
Comparison of Intraarticular Pulsed Radiofrequency and Intraarticular Corticosteroid Injection for Management of Cervical Facet Joint Pain.
Disorders of the facet joints are some of the most common sources of chronic spinal pain. Facet joint pain is responsible for approximately 50% of patients with chronic neck pain. Pulsed radiofrequency (PRF) stimulation, after placing needle electrodes into the joint space, has been recently reported for the management of joint pain. ⋯ IA PRF stimulation is as effective as IA corticosteroid injection in attenuating CFJ pain. The use of PRF could decrease CFJ pain, while avoiding the adverse effects of steroids.Key words: Cervical facet joint pain, pulsed radiofrequency, intraarticular stimulation, chronic pain, corticosteroid injection, numeric rating scale.
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Individuals with chronic whiplash associated disorders (WAD) present persistent pain in the absence of structural pathology. In these people, altered central pain processing and central sensitization are observed. The role of personal factors, such as gender and age, on pain processing mechanisms in chronic WAD, however, is still unclear. ⋯ Some alterations of altered pain processing are present in chronic WAD patients, however not in response to exercise. No gender and age differences in pain measurements were observed in people with chronic WAD.Key words: Neck pain, whiplash associated disorders, chronic pain, personal factors, age, gender, central sensitization, exercise induced hyperalgesia, pressure pain thresholds, self reported pain.
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The incidence of spinal infection seems to be increasing in recent years. Percutaneous endoscopic debridement and drainage (PEDD) has become an effective alternative to extensive open surgery. ⋯ PEDD using 4 different routes brought immediate pain relief and reduced disability in treating spinal infections, especially in elderly patients with comorbid underlying disorders.Key words: Percutaneous discectomy, psoas abscess, spinal epidural abscess, spondylodiscitis, surgical endoscopy.
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Comparative Study
Comparisons of Lesion Volumes and Shapes Produced by a Radiofrequency System with a Cooled, a Protruding, or a Monopolar Probe.
Radiofrequency (RF) ablation for denervation has been utilized for decades in chronic pain management. This relies on the proper targeting of the affected nerve which may be obtained by creating an ablation lesion with a shape and volume that optimizes targeting. Various systems designed to improve lesion size are available. These include cooling the active tip (cooled-RF) and protruding the RF electrode outside the active tip (PERF). ⋯ The results indicate that the lesion produced with a cooled-RF system (17 g, 4 mm tip) is significantly larger than that produced with either of the other systems trialed (18 g or 20 g, 10 mm active tip protruding electrode or 16 g, 18 g, or 20 g monopolar electrode). Interestingly, a 16 g, 10 mm active tip monopolar electrode produced a larger lesion than the one produced with the 18 g protruding electrode. Key words: Radiofrequency, ablation, lesion shape, lesion size, cooled-RF, protruding electrode RF, monopolar RF.