Incidence and Severity of Epidural Fibrosis after Back Surgery: An Endoscopic Study

Background:   Epidural fibrosis has been implicated in the etiology of persistent pain after back surgery (Failed Back Surgery Syndrome [FBSS]). Using spinal endoscopy to view the lumbosacral epidural cavity, the incidence, severity, and appearance of epidural fibrosis was evaluated in patients with FBSS.
Methods:   A prospective cohort observational study using epidural endoscopy was done involving 78 patients with persistent pain after back surgery. Patients were evaluated prospectively for the presence of epidural fibrosis and fibrosis was rated using a 4-level grading system based on appearance and resistance to epiduroscope advancement. The incidence of fibrosis detected by epiduroscopy vs. the incidence as reported in magnetic resonance imaging (MRI) studies for the same patients were compared.
Results:   As diagnosed with epiduroscopy, 83.3% of all patients with persistent pain after back surgery had severe (grade 3 or 4) epidural fibrosis, while 91.0% had significant (grade 2, 3, or 4) fibrosis. In patients who had undergone more extensive surgery, severe fibrosis was present in 91.1% and significant fibrosis in 95.6%. Using MRI, epidural fibrosis was diagnosed only in 16.1% of these patients. All patients with severe epidural fibrosis had a filling defect on epidurography. Concordant pain was present in 84.3% of patients and depended on the severity of fibrosis. Results were statistically evaluated using analysis of frequencies and t -test. P  < 0.05 was considered statistically significant.
Conclusions:   Epiduroscopy demonstrates that the prevalence of severe epidural fibrosis after FBSS is substantially higher than is generally reported in MRI evaluations. Severe epidural fibrosis is an underlying pathology in most patients with FBSS.     

Treatment of lumbar spinal stenosis with epidural steroid injections: a retrospective outcome study

OBJECTIVE: To determine patient satisfaction, relief of pain, frequency of injections, change of function, and subsequent surgical rate in patients who received epidural steroid injections (ESIs) for the diagnosis of lumbar spinal stenosis (LSS). DESIGN: Retrospective review conducted using a standard set of questions asked over the telephone, 6 to 36 months after the patient received an ESI. SETTING: An outpatient spine center. PARTICIPANTS: One hundred forty patients at or over the age of 55 years diagnosed with LSS who received ESI(s). INTERVENTION: Transforaminal or caudal fluoroscopically guided ESIs with 60 to 100mg of triamcinalone in combination with local anesthetic or normal saline.Main outcome measures Duration and amount of pain relief, change in functional status, patient satisfaction, and surgical rate, assessed by a 5-item questionnaire. RESULTS: Of the 140 participants, 32% reported more than 2 months of pain relief, 39% reported less than 2 months of pain relief, and 29% reported no relief from the injection(s). Twenty percent subsequently had surgery. Fifty-three percent reported improvement in their functional abilities. Seventy-four percent where at least somewhat satisfied with ESI as a form of treatment. CONCLUSIONS: ESI is a reasonable treatment for LSS, providing one third of our patient population with sustained relief and more than half with sustained improvement in function.     

Procedure-based nonsurgical management of lumbar zygapophyseal joint cyst-induced radicular pain

OBJECTIVE: To evaluate the success of fluoroscopically guided, contrast-enhanced lumbar zygapophyseal joint (Z-joint) aspiration and steroid injection combined with transforaminal epidural steroid injections (TFESIs) for the treatment of lumbar Z-joint cyst-induced radicular pain. DESIGN: Retrospective case series with independent follow-up. SETTING: Institutional, referral center. PARTICIPANTS: Twenty-three patients referred to a single provider for procedure-based management of radicular pain believed secondary to lumbar Z-joint cyst. Inclusion criteria consisted of lumbar radicular pain that was consistent with the level and side of the Z-joint cyst as a causative lesion. INTERVENTIONS: Eighteen patients were treated with a fluoroscopically guided, contrast-enhanced Z-joint aspiration and steroid injection at the level of the causative cyst coupled with a fluoroscopically guided, contrast-enhanced TFESI over the level of the presumably irritated spinal nerve. MAIN OUTCOME MEASURES: Patient satisfaction, and whether or not surgery was performed. RESULTS: Fifty percent of patients treated with the procedure had significant long-term benefit and avoided surgical intervention at an average follow-up of 9.9 months. CONCLUSIONS: Fluoroscopically guided, contrast-enhanced spinal procedures as part of an aggressive nonsurgical treatment program are a safe and effective alternative to surgical intervention for lumbar Z-joint cyst-induced radicular pain.     

Complications of fluoroscopically guided caudal epidural injections

OBJECTIVES: To assess the incidence of complications of fluoroscopically guided caudal epidural injections. DESIGN: A retrospective cohort design study in which chart review was performed on patients, who presented with radiculopathy and received fluoroscopically guided caudal epidural steroid injections. All injections were performed consecutively over a 12-mo period. An independent observer reviewed medical charts, which included a 24-hr post procedure telephone call by an ambulatory surgery center nurse, who asked a standardized questionnaire about complications after the injections. Physician follow-up office notes 1 to 3 wk after injection along with epidurograms were reviewed. RESULTS: The charts of 139 patients, who received 257 injections, were reviewed. Complications per injection included 12 episodes of insomnia the night of the injection (4.7%), 9 transient nonpositional headaches that resolved within 24 hr (3.5%), 8 increased back pain (3.1%), 6 facial flushing (2.3%), 2 vasovagal reactions (0.8%), 2 episodes of nausea (0.8%), and 1 increased leg pain (0.4%). No dural punctures occurred. CONCLUSIONS: No major complications occurred. The incidence of minor complications was 15.6% per injection. All reactions resolved without morbidity and no patient required hospitalization.     

Disk entry: a complication of transforaminal epidural injection--a case report

Correctly identifying the etiology of low back pain can be challenging. The importance of making an expedient, accurate diagnosis of lumbar radicular pain cannot be overemphasized, as proper treatment is based on the outcome. The application of fluoroscopically guided, contrast enhancement during spinal injections is commonly performed, but is not without complications. Intradiskal placement of contrast dye during lumbar transforaminal epidural injection is important to identify, as serious potential complications, such as diskitis, may occur. Additionally, postprocedure assessment may not be accurate if contrast placement is not correctly identified. This case report reviews the literature on complications of transforaminal steroid injection and presents the first documentation of intradiskal placement of contrast dye in the United States. A 72-year-old man presenting with a right L4 radiculopathy underwent a fluoroscopically guided, contrast-enhanced lumbar transforaminal epidural steroid injection and experienced intradiskal placement of contrast as a complication of this procedure. Although the patient was treated prophylactically and achieved good results, the need for fluoroscopy and contrast enhancement during performance of spinal injections is reemphasized.     

Comparison of Epidural Depo-Medrol vs. Aqueous Betamethasone in Patients with Low Back Pain

Abstract: Despite the popularity of epidural steroid injections for low back pain, there still remains a lack of consensus on which type of steroid to inject. Most comparison studies regarding epidural steroids are based on an assumption that different types of steroids are equal as long as equipotent doses are utilized. In the spring of 2002, a national shortage of all depo steroids allowed the authors to compare epidural methylprednisolone (Depo‐Medrol) to a non depo form of betamethasone in patients with low back pain. Patients who received epidural methylprednisolone (Depo‐Medrol) reported significant reduction in pain ratings as well as disability scores after 4 weeks, while patients receiving betamethasone showed no significant difference in pain or disability scores. This study shows that the aqueous steroid betamethasone is not an effective alternative to the commonly used depo‐steroid methylprednisolone (Depo‐Medrol) when injected epidurally in patients with lumbar pain. The study also shows that the anti‐inflammatory effect of a depo‐steroid can be greater than a non‐depo steroid, even at equipotent doses. This should be an important factor to consider when reviewing epidural steroid outcome studies, where the type of steroid might affect results as much as other variables such as route of administration, volume of injectate, or use of fluoroscopy.     

Abstract 3: Fluoroscopically guided caudal epidural steroid injections for lumbar spinal stenosis: An evaluation of long-term efficacy

Objective: To assess the efficacy of fluoroscopically guided caudal epidural steroid injections (ESIs) in the management of lumbar spinal stenosis. Design: Retrospective chart review and follow-up study. Setting: Academic-affiliated outpatient physiatry practice. Participants: Patients with low back and/or leg pain of at least 3 months in duration with clinical and radiographic evidence of moderate to severe lumbar spinal stenosis who received caudal ES’s between 1995 and 2002. Patients who had undergone prior lumbar spinal surgery were excluded. Intervention: Fluoroscopically guided caudal ESIs. Main Outcome Measures: Visual Numeric Scale (VNS), Roland-Morris Disability Questionnaire (RMDQ), North American Spine Society Patient Satisfaction Index (PSI), and subsequent surgery. Results: Of 3153 charts reviewed, 95 patients met inclusion criterion. 79 (83%) completed the follow-up questionnaire by mail or telephone interview. The mean patient age was 70 years, mean duration of symptoms was 39 months, and average follow-up time was 31 months. Patients underwent an average of 1.5 caudal ESIs. 9 patients subsequently underwent surgery; 1 had an intradiskal electrothermal therapy procedure. A VNS improvement of 50% or greater was seen in 37% of patients. With respect to patient satisfaction, 44% reported that the procedure either fully met their expectations or that they would undergo it again for the same outcome. A functional improvement of 2 points or greater was seen on the RMDQ in 40% of patients. The concurrent presence of degenerative spondylolisthesis was the only variable that had a significant positive correlation with successful outcomes (P<.003). Conclusions: Caudally placed, fluoroscopically guided ESIs offer a safe, minimally invasive option for managing pain caused by lumbar spinal stenosis. Many patients in this study derived long-term benefit from a single caudal ESI. The concurrent presence of degenerative spondylolisthesis appears to be a positive prognostic factor for successful response.     

Epidural Steroid and Clonidine for Chronic Intractable Post‐thoracotomy Pain: A Pilot Study

Background: Chronic post‐thoracotomy pain is relatively common after major thoracic surgery. The primary results of a pilot study using thoracic epidural steroid and clonidine injection to treat chronic intractable post‐thoracotomy pain are presented. Methods: Twenty‐one patients with intractable post‐thoracotomy pain participated in the study. Thirteen patients received thoracic epidural injection of a mixture of 150 μg clonidine and 80 mg of methylprednisolone acetate diluted in 8 mL 0.5% lidocaine. Eight patients continued with comprehensive medical management and served as a control group. A visual analog scale (VAS) for pain was recorded before treatment, 30 minutes after the epidural injection and before discharge, at 3 weeks and 6 months. Pain, sleep disturbances, appetite changes and daily activity, as well as the incidence of complications were recorded. The need for opioid rescue medications was recorded. Results: Twelve of 13 patients in the injection group reported improvement (> 50% reduction of pain) at 3 weeks and 6 months following the injection. Allodynia improved in all injection group patients compared to four of eight in the control group. Sleep disturbance, appetite changes and daily activity were improved in the injection group. The number of patients requiring opioid rescue medications was reduced from 61.5% to 15.3% during the 6‐month duration of study. Injection caused transient hypotension in 46.2% of patients. Mild sedation was noted in 30.7% of patients receiving injection; 15.3% of the patients had localized back pain at the site of injection. Discussion: Our preliminary data suggest possible efficacy of thoracic epidural steroid and clonidine mixture in the treatment of chronic post‐thoracotomy pain. No serious adverse effects were noted in this pilot study. ?     

Fluoroscopically Guided Supraglenoid Tubercle Steroid Injections for the Management of Biceps Tendonitis

Background: The management of bicipital tendonitis can be challenging to the clinician. Traditionally, blind injections near the bicipital groove have been performed by clinicians with risk of bicipital tendon rupture or atrophy. Because of the inaccuracy and risk associated with blind bicipital tendon steroid injections, we sought to ascertain whether a fluoroscopically guided steroid injection into the region of the origin of the long head of the bicipital tendon (supraglenoid tubercle) was efficacious. Methods: A retrospective chart review of 6 consecutive patients with a diagnosis of bicipital tendonitis was performed. All patients underwent a fluoroscopically guided steroid/anesthetic injection into the supraglenoid tubercle of the shoulder. The main outcome measure was post‐procedure change in visual analog pain scale; the secondary outcome was the physical examination (presence of a Speed's test). Results: Ten cases were identified, but only 6 had complete data and were included in the analysis. Five of the 6 patients experienced a reduction in pain by 50% at follow‐up. Discussion: A fluoroscopically guided block injected into the supraglenoid tubercle may be effective in the management of bicipital tendonitis.     

Chronic lateral epicondylitis of the elbow: a prospective study of low-energy shockwave therapy and low-energy shockwave therapy plus manual therapy of the cervical spine. (Johannes Gutenberg University School of Medicine, Mainz, Germany). Arch Phys Med Rehabil. 2001;82:578–582.

Failed back surgery syndrome (FBSS) is a long-lasting often disabling, and relatively frequent (5% to 10%) complication of lumdosacral spine surgery. Epidural fibrosis is among the most common causes of FBSS, and it is often recalcitrant to treatment. Repeated surgery for fibrosis has only a 30% to 35% success rate, whereas 15% to 20% of patients report worsening of their symptoms. Long-term outcome studies focusing on pharmacologic management of chronic back pain secondary to epidural fibrosis are lacking in the literature. This report presented 2 cases of severe epidural fibrosis managed successfully with gabapentin monotherapy. In both cases, functional status improved markedly and pain was significantly diminished. Gabapentin has an established, favorable safety profile and has been shown to be effective in various animal models and human studies of chronic neuropathic pain. Conclude clinicians should consider gabapentin as a pharmacological treatment alternative in the management of FBSS caused by epidural fibrosis.     

Fluoroscopically guided lumbar transformational epidural steroid injections in degenerative lumbar stenosis: an outcome study

OBJECTIVE: To identify the short- and long-term therapeutic benefit of fluoroscopically guided lumbar transforaminal epidural steroid injections in patients with radicular leg pain from degenerative lumbar stenosis. DESIGN: This prospective cohort study performed at a multidisciplinary spine center. There were a total of 34 patients who met our inclusion criteria for the treatment of unilateral radicular pain from degenerative lumbar spinal stenosis who underwent fluoroscopically guided lumbar transforaminal epidural injections. Patients with radiculopathy, who did not respond to physical therapy, antiinflammatories, or analgesics, caused by degenerative lumbar stenosis and confirmed by magnetic resonance imagining received fluoroscopically guided lumbar transforaminal epidural steroid injections at the presumed symptomatic nerve root. The injectant consisted of 12 mg of betamethasone acetate and 2 ml of 1% preservative-free lidocaine HCL. Patients were evaluated by an independent observer and received questionnaires before the initial injection, at 2 mo, and at 12 mo after the injections. Questionnaires included a visual analog scale, Roland 5-point pain scale, standing/walking tolerance, and patient satisfaction scale. RESULTS: A total of 34 patients met our inclusion criteria and were followed for 1 yr. Seventy-five percent of patients had successful long-term outcome, reporting at least a >50% reduction between preinjection and postinjection pain scores, with an average of 1.9 injections per patient. Sixty-four percent of patients had improved walking tolerance, and 57% had improved standing tolerance at 12 mo. CONCLUSION: Fluoroscopically guided transforaminal epidural steroid injections may help reduce unilateral radicular pain and improve standing and walking tolerance in patients with degenerative lumbar spinal stenosis.     

Are Diagnostic Lumbar Facet Injections Influenced by Pain of Muscular Origin?

Introduction: Nonradicular low back pain can be a difficult entity to accurately diagnose and treat. Facet joints, muscle, ligaments, and fascia have all been reported to be etiologies of acute and chronic low back pain. However, the facet joint as a source of low back pain is controversial. The diagnosis of facet joint pain is made by diagnostic facet joint or median nerve branch injections with a local anesthetic. The purpose of this study was to determine if the results of diagnostic facet joint injections are influenced by the technique used to perform these injections. Methods: Seventy‐five male patients aged 45 years or younger and 18 years or older who were injured while performing heavy work with nonradicular low back pain were included in this study. Diagnostic injection therapy was performed following Institutional Review Board approval and the patient's informed consent. Patients were assigned to one of five groups to receive diagnostic injections in a double‐blinded fashion as follows: Group I: facet joint injection with continuous lidocaine administration from the skin to the facet joint as the needle was advanced; Group II: facet joint injection with saline administration from the skin to the facet joint as the needle was advanced; Group III: median nerve branch injection with a lidocaine advancing needle technique; Group IV: median nerve branch injection with saline advancing needle technique; and Group V: injection of the paraspinous muscles with local anesthetic and steroid following noted areas of pain diagnosed with saline injection and radiopaque contrast. After one week, the patients in Groups I to IV who had no pain relief with facet joint or median nerve block injections subsequently received paraspinous muscle injections, while the patients in Group V who had no long‐term relief with muscle injections were given facet joint injections. The appropriate parametric and nonparametric tests were performed with statistical significance defined as P ≤ 0.05. Results: There were no differences among the groups demographically. The incidence of pain relief was significantly higher in subjects who had a continuous injection of local anesthetic into their musculature than in those individuals who received continuous saline followed by an injection of local anesthetic into their facet joint or median nerve branch. Discussion: The results of this study demonstrated that local anesthetic injections are useful for the diagnosis of nonradicular low back pain but may yield false positive results with respect to lumbar facet pain depending upon the technique utilized.     

Using gabapentin to treat failed back surgery syndrome caused by epidural fibrosis: A report of 2 cases

Failed back surgery syndrome (FBSS) is a long-lasting, often disabling, and relatively frequent (5%-10%) complication of lumbosacral spine surgery. Epidural fibrosis is among the most common causes of FBSS, and it is often recalcitrant to treatment. Repeated surgery for fibrosis has only a 30% to 35% success rate, whereas 15% to 20% of patients report worsening of their symptoms. Long-term outcome studies focusing on pharmacologic management of chronic back pain secondary to epidural fibrosis are lacking in the literature. This report presents 2 cases of severe epidural fibrosis managed successfully with gabapentin monotherapy. In both cases, functional status improved markedly and pain was significantly diminished. Gabapentin has an established, favorable safety profile and has been shown to be effective in various animal models and human studies of chronic neuropathic pain. Clinicians should consider gabapentin as a pharmacologic treatment alternative in the management of FBSS caused by epidural fibrosis.     

Accuracy of Caudal Epidural Injection: The Importance of Real-Time Imaging

Abstract:   Caudal epidural steroid injections are often used for low back pain. Fluoroscopic guidance has been frequently cited as a requirement for this procedure.
In this preliminary report, we demonstrate that fluoroscopic guidance for caudal epidural Tuohy needle placement without real-time imaging may result in inadvertent intravenous injection of the drug. We detected intravenous leakage of the drug in 4 cases of 10 when real-time fluoroscopic imaging was used. Thus, real-time imaging may be recommended in addition to routine fluoroscopic guidance for caudal epidural procedures, as it may improve efficacy and safety by assuring accurate drug deposition.     

Interventional Pain Management for Failed Back Surgery Syndrome

Patients who suffer from the condition known as failed back surgery syndrome (FBSS) present to the offices of physicians, surgeons, and pain specialists alike in overwhelming numbers. This condition has been defined as persistent back and/or leg pain despite having completed spinal surgery. As lumbar surgery continues to grow in prevalence, so will the number patients suffering from FBSS. It is important for physicians treating this population to expand their knowledge of FBSS etiologies and appropriate diagnostic imaging modalities, combined with confirmatory diagnostic injections, and proper technique for interventional pain procedures. In doing so, the physician may adequately be prepared to manage these complex cases in the future, ideally with the support of stronger evidence. Management begins with a systematic evaluation of common FBSS etiologies such as new‐onset stenosis, recurrent herniated nucleus pulposus (HNP), epidural fibrosis, pseudarthrosis, and others. History and physical may be supplemented by imaging including X‐ray, magnetic resonance imaging, or computed tomography myelography. Certain diagnoses may be confirmed with diagnostic procedures such as intra‐articular injections, medial branch blocks, or transforaminal nerve root blocks. Once an etiology is determined, a multidisciplinary approach to treatment is most effective. This includes exercise or physical therapy, psychological counseling, medication, and interventional procedures. The most invasive treatment option, short of revision surgery, is spinal cord stimulation. This intervention has a number of studies demonstrating its efficacy and cost‐effectiveness in this population. Finally, revision surgery may be used when indicated such as with progressive neurological impairment or with issues regarding previous surgical instrumentation.     

Precautions During Epidural Neuroplasty

Abstract: Scar formation in the epidural space due to previous operations or presence of inflammation in and around the nerve roots or spinal nerves in patients with back pain or radiculopathy have been documented in patients suffering from spinal pain. Several methods targeting the scar formation and inflammation have been used. Epidural neuroplasty is one of the recently used methods. The goals of neuroplasty are to break down fibrous adhesions that may prevent free movement of structures in the intervertebral foramen and in the bony vertebral canal. However, epidural neuroplasty is not free of complications. During epidural neuroplasty, unintended dural puncture, administration of hypertonic saline to the subarachnoid/subdural space, catheter shear, infection, and haemodynamic instability during the application are the most commonly observed complications. The most commonly seen complications of epidural neuroplasty are due to the procedure or the drugs administered. Complications relating to the procedure are usually seen immediately, while complications relating to drug administration are typically seen later. In this article, we discuss not only the possible complications during epidural neuroplasty, but their prevention and management as well.     

Dysphonia associated with epidural steroid injection: a case report

A 46-year-old patient with left-side low back pain developed symptoms of dysphonia and throat irritation 24 hours after receiving a fluoroscopically guided steroid injection into the epidural space. A direct laryngoscopy performed before a second injection detected no abnormalities. When dysphonia reappeared 48 hours after that injection, laryngoscopy revealed edema in the anterior vocal cord with thick surrounding mucous. Full clinical resolution of the dysphonia was apparent by laryngoscopy 15 days after the second injection. The mechanism of dysphonia after epidural steroid injection is unknown, but it may result from a systemic steroid effect.     

Fluoroscopy-guided Sacroiliac Joint Injections with Phenol Ablation for Persistent Sacroiliitis: A Case Series

Abstract: In this article we are reporting on the use of fluoroscopy‐guided 6% Phenol injections for the ablation of the sacroiliac joints (SIJs), utilizing retrospective review of case reports. We reviewed 10 patients (7 male and 3 female) who have known sacroiliitis proven by fluoroscopically guided sacroiliac joint (SIJ) injection (age ranged from 25 to 78). They all had 2 to 4 weeks of relief after the injections utilizing Bupivacaine 0.5% and 80 mg of depomedrol. They all had repeat fluoroscopy‐guided injections of the SIJs with neurolysis of either a unilateral SIJ or bilateral SIJs using 6% Phenol. Phenol 6% with saline 2.5 cc per joint was injected; the needle was cleared with local anesthetic before removing it from the joint. Twenty percent of the patients had a greater than 70% improvement with an average duration of 24 weeks. Sixty percent of the patients had a 50% to 70% improvement with an average duration of 20 weeks. Ten percent had a 20% to 50% improvement with a total duration of 12 1/2 weeks. Ten percent had a less than 20% improvement. With intra‐articular injections of phenol for the ablation of the SIJs, we have found a significant improvement in pain relief accompanied by prolonged duration of relief.     

Evaluation of Epidurographic Contrast Patterns with Fluoroscopic-Guided Lumbar Interlaminar Ventral Epidural Injection

Background:   Targeted ventral epidural steroid injection with a transforaminal approach has been widely used for the treatment of nerve root inflammation and pain. Lumbar interlaminar approach is also commonly used; however, ventral epidural injection may not be obtained properly. Lumbar interlaminar ventral epidural (LIVE) injection can be achieved as the epidural catheter is placed at the ventrolateral side of the nerve root. The purpose of this study is to evaluate the contrast dispersal pattern with LIVE injection.
Methods:   Forty patients with lower back and L5 radicular pain were studied. LIVE injection was performed with an epidural catheter inserted toward the 9 o'clock position (for the right side) or 3 o'clock position (for the left side) of the pedicle, where the catheter tip was placed at the ventrolateral side of the nerve root. A total of 2 mL of contrast was injected to determine the epidurographic pattern.
Results:   With 1-mL injection, all patients showed excellent filling in the ventral epidural space of L5 nerve root. After a total of 2 mL injection, it showed rostral spread in 26/40 (65%) patients, and caudal spread in 34/40 (85%) patients. None of the patients showed intravascular injection, and no neural complications were reported.
Conclusions:   The data showed excellent spread of contrast into the nerve root and the ventral epidural space in all patients. There were no inadvertent vascular or neural complications. LIVE approach can be an alternative way to achieve targeted ventral epidural injection.     

持续硬膜外输注镇痛结合交感神经射频热凝治疗四肢带状疱疹后遗神经痛的疗效

摘要 目的：观察CT 引导下四肢带状疱疹后遗神经痛（PHN）持续硬膜外输注镇痛结合交感神经射频热凝治疗的临床结果。 方法：32例四肢带状疱疹后遗神经痛患者随机分为对照组（A组,采用硬膜外置管持续输注镇痛治疗,n=17）和联合治疗组（B组,采用持续硬膜外置管镇痛3—4周后行交感神经射频热凝治疗3次,n=15）,比较治疗前后7d、1个月、6个月、1年的视觉模拟评分（VAS）、疼痛缓解率、生存质量评分（QOL）、麻木评分、肌力下降发生率。 结果：治疗后两组患者的VAS评分均较治疗前明显降低（P<0.05）;治疗后6个月、1年,B组的VAS、QOL、疼痛缓解率均优于A组（P<0.05）,同时A、B两组的麻木发生率和麻木评分均无显著性差异（P>0.05）,治疗后两组均无肌力下降发生。 结论：四肢带状疱疹后遗神经痛持续硬膜外镇痛结合交感神经射频毁损治疗可有效缓解疼痛,长期疗效高于单纯持续硬膜外镇痛,同时并不增加麻木及肌力下降的发生率。