Pulsed radiofrequency for chronic pain

Byrd, David R.; Mackey, Sean

doi:10.1007/s11916-008-0008-3

Cited by 175 publications

(147 citation statements)

References 31 publications

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“…These results were surprisingly the same as those from a previous study by Shah et al (8). Most of the published studies have revealed that the mandibular division (V3) was most commonly involved and that the ophthalmic division (V1) was less commonly presented (5,7,(9)(10)(11)(12)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24). Further, all support the typical feature of this condition in which the mandibular and maxillary (V2) divisions are more commonly involved than the ophthalmic.…”

Section: Discussionmentioning

confidence: 67%

Trigeminal Neuralgia: Frequency of Occurrence in Different Nerve Branches

Bangash

2011

Anesth Pain

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Background: Trigeminal neuralgia (TN) is neuropathic pain which can involve any part or side of the face. Objectives: The objectives of this study were to find the most common branch of trigeminal nerve affected and the most common side involved. Patients and Methods: This Cross sectional study was carried out on 100 patients of trigeminal neuralgia in one year time. The diagnosis was based on a detailed history, clinical examination and control of pain by carbamazepine being taken supplemented by radiographic investigations. The collected data was analysed by SPSS 16. Results: The age of the patients varied from 40 to 80 years with a mean age 54 years at the time of presentation. The males to females ratio was 1:2. The right side of the face was found to be involved in seventy patients (64 %) and left side in (36 %). No case presented with bilateral involvement. The Mandibular division was most commonly involved in this study (n = 55; 55%) and least was ophthalmic divisions (n = 6; 6%). Conclusions: This study demonstrated numerous clinical similarities of trigeminal neuralgia afflicting different populations. Right side was more involved along with mandibular division the most commonly affected. However studies needs to be done to know the exact reasons of involvement of the affected side and branches. Please cite this paper as: Implication for health policy/practice/research/medical education:Trigeminal neuralgia is neuropathic pain which can involve any part or side of the face in different age groups. This article opens a new window for neurosurgeons and pain medicine specialists.

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Section: Discussionmentioning

confidence: 67%

Trigeminal Neuralgia: Frequency of Occurrence in Different Nerve Branches

Bangash

2011

Anesth Pain

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“…The temperature achieved on the surface of the electrode, usually 80°C to 85°C, depends on the amplitude of the applied current and diminishes rapidly with increasing distance from the electrode. 18,21,22 Pulsed RF In contrast to thermal (continuous) radiofrequency, a high-voltage radiofrequency current is delivered in short pulses of 20 ms. The relatively long silent phase between the bursts allows the heat to dissipate.…”

Section: Thermal Rfmentioning

confidence: 99%

“…The relatively long silent phase between the bursts allows the heat to dissipate. 18,21 In this way, using the same voltage used in CRF, the tissue temperature can be kept at 42°C, which is below the neurodestructive temperature of 45°C. On the other hand, PRF can produce far stronger electric fields.…”

Section: Thermal Rfmentioning

confidence: 99%

“…The fact that the electrode temperature is kept at 42°C, which does not produce a thermal injury like CRF, lead to the hypothesis that the effects of PRF are temperature independent. 21,24 Histopathologic studies only show the appearance of early ultra structural changes, such as axonal changes with abnormal membranes and morphology of mitochondria, disorganization of microfila- o n l y ments and microtubules, 25 reversible endoneural edema, fibroblast activation with collagen deposition 11 and separation in myelin configuration. 24 Some authors postulate that the electric fields and the high transmembrane potentials they induce are the underlying mechanisms of many of the effects of PRF.…”

Section: Thermal Rfmentioning

confidence: 99%

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Radiofrequency therapy in back pain and complex regional pain syndrome

et al. 2011

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“…In CRF application, 420 kHz high frequency alternating current at a voltage output of 15-25 volt is applied for 60 to 90 seconds, generating a temperature of 60°C to 80°C. This temperature causes selective thermocoagulation of pain carrying nerve fibers (A-δ and C fibers) [18][19][20]. It has got an additional advantage of creating a well circumscribed lesion, thus sparing the adjacent vital structures.…”

mentioning

confidence: 99%

Conventional Radio Frequency Thermo Coagulation versus Local Anesthetic and Steroid Injection for Ganglion Impar Block in Chronic Perineal Pain of Non-oncological Origin

Usmani¹

2014

ACC

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IntroductionChronic perineal pain is an idiopathic multi factorial vague disorder which results due to a complex interaction between neurological, musculoskeletal and endocrine systems. The behavioural and psychological factors play an important role in the persistence of this pain syndrome [1,2].The ganglion Impar (ganglion of Walther) is a single retroperitoneal bundle of nerves located near the sacrococcygeal joint and marks the end of two paravertebral sacral sympathetic chains [3]. Blockade of the ganglion Impar has been widely accepted intervention for the management of recalcitrant chronic perineal pain of visceral and/or sympathetic origin [4][5][6].Blockade of ganglion Impar is usually done by injection of local anesthetic with or without steroids [4,7,8] [14][15][16][17]. Latest addition to this list is a non-pharmacological technique of Conventional Radiofrequency Ablation (CRF). In CRF application, 420 kHz high frequency alternating current at a voltage output of 15-25 volt is applied for 60 to 90 seconds, generating a temperature of 60°C to 80°C. This temperature causes selective thermocoagulation of pain carrying nerve fibers (A-δ and C fibers) [18][19][20]. It has got an additional advantage of creating a well circumscribed lesion, thus sparing the adjacent vital structures.Recently, few clinical trials were conducted to study the efficacy of CRF of ganglion Impar block for the management of chronic perineal pain [3,21,22] but none of the authors have compared the efficacy of local anaesthetic-steroid combination with CRF for chronic perineal pain. Usmani H, et al., J Anesth Clin Care 2014, 1: 005 DOI: 10.24966/ACC-8879/100005 HSOA Journal of Anesthesia and Clinical careResearch Article Abstract Background: Chronic non-oncological perineal pain in female population is a well recognized medical condition. Chronic perineal pain of malignant or non malignant origin has been effectively managed by ganglion Impar block. Local anesthetic with or without steroid, phenol, alcohol, cryoablation and radiofrequency ablation are the accepted methods of blockade.

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Pulsed radiofrequency for chronic pain

Cited by 175 publications

References 31 publications

Trigeminal Neuralgia: Frequency of Occurrence in Different Nerve Branches

Trigeminal Neuralgia: Frequency of Occurrence in Different Nerve Branches

Radiofrequency therapy in back pain and complex regional pain syndrome

Conventional Radio Frequency Thermo Coagulation versus Local Anesthetic and Steroid Injection for Ganglion Impar Block in Chronic Perineal Pain of Non-oncological Origin

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