Epidural Steroid Injections

Epidural steroid injection (ESI) is the most commonly performed intervention in pain clinics across the United States. This article provides an evidence-based review of ESI, including data on efficacy, patient selection, comparison of types, and complications. The data strongly suggest that ESI can provide short-term relief for radicular symptoms but are less compelling for long-term effects or relief of back pain. Although it has been asserted that transforaminal ESIs are more efficacious than interlaminar injections, the evidence supporting this is limited.     

Ultrasound as a Screening Tool for Proceeding With Caudal Epidural Injections

Chen CP, Wong AM, Hsu C-C, Tsai W-C, Chang C-N, Lin S-C, Huang Y-C, Chang C-H, Tang SF. Ultrasound as a screening tool for proceeding with caudal epidural injections.

Objective

To study the anatomical structure of the sacral hiatus using ultrasound. Based on the sonographic images of the sacral hiatus, the feasibility of caudal epidural injection can then be assessed.

Design

Case-controlled study.

Setting

Rehabilitation outpatient clinic in a tertiary medical center.

Participants

Patients (N=47; 20 women, 27 men) with low back pain and sciatica who were to receive caudal epidural injection treatments were recruited into this study.

Interventions

Sonographic images of the sacral hiatus were obtained from all the patients. An ultrasound machine capable of examining musculoskeletal tissues with real-time linear-array ultrasound transducer was used to measure the distance between the anterior wall and posterior wall of the sacral hiatus (diameter of the sacral hiatus) and the distance between bilateral cornua.

Main Outcome Measures

Diameter of the sacral canal and distance between bilateral cornua measured in millimeters.

Results

The mean diameter of the sacral canal was measured to be 5.3±2.0mm in our recruited patients. The mean distance between bilateral cornua was measured to be 9.7±1.9mm. Caudal epidural injections failed in 7 patients. In these 7 patients, 4 had very small diameter of the sacral canal (1.6, 1.2, 1.4, and 1.5mm). In 1 man, sonographic images revealed a closed sacral hiatus (no sacral canal diameter can be measured). Two patients revealed flow of fresh blood into the syringe while checking for the escape of cerebrospinal fluid after the needles were inserted into the sacral canal. For safety reasons, steroid injections were not performed in these 2 patients.

Conclusions

Ultrasound may be used as an effective screening tool for caudal epidural injections. Anatomic variations of the sacral hiatus can be clearly observed using ultrasound. Sonographic images indicating a closed sacral canal and sacral diameters ranging from 1.2 to 1.6mm may suggest a higher failure rate in caudal epidural injection.     

Cervical Epidural Steroid Injections for the Treatment of Cervical Spinal (Neck) Pain

Neurolytic celiac plexus blocks (NCPB) have been performed for many years for the treatment of cancer and some non-cancer pain conditions associated with the upper gastrointestinal tract. The block can provide adequate pain relief from the area of the distal esophagus to the transverse colon, and can be approached from a variety of ways. This is a review of the anatomy, patient selection, technique, medications used, possible complications, and efficacy of the treatment.     

Effectiveness of Oral Pain Medication and Corticosteroid Injections for Carpal Tunnel Syndrome: A Systematic Review

Objective

To present an evidence-based overview of the effectiveness of oral pain medication and corticosteroid injections to treat carpal tunnel syndrome (CTS).

Ultrasound-Guided Standard vs Dual-Target Subacromial Corticosteroid Injections for Shoulder Impingement Syndrome: A Randomized Controlled Trial

ObjectiveTo compare dual-target injection with standard ultrasound (US)-guided subacromial injection in patients with subacromial impingement syndrome (SIS) and possible disorders of the biceps long-head tendons.DesignDouble-blind, randomized controlled trial.SettingRehabilitation outpatient clinic.ParticipantsPatients with SIS (N=60).Intervention(1) US-guided standard subacromial bursa; (2) dual-target (subacromial bursa plus proximal biceps long-head tendon) injection, with 40-mg triamcinolone acetonide administered to patients in each group.Main Outcome MeasuresClinical assessments were performed at baseline. The outcomes, including results from a self-administered questionnaire, the Shoulder Pain and Disability Index (SPADI), and a self-pain report, the visual analog scale (VAS) scores for pain at rest, at night, and during overhead activities, were evaluated at baseline and at the first and third months postintervention.ResultsNo significant difference was observed in baseline evaluations between groups (n=30 in each treatment arm) prior to injections. Both groups exhibited significant SPADI and VAS-score improvements after the first month. The dual-target injection group had less rebounding pain at the 3-month follow-up. The standard injection group had more patients reporting worsening pain within 1 day postinjection.ConclusionUS-guided dual-target corticosteroid injection showed similar short-term efficacy to standard subacromial injections, but with an extended duration of symptom relief. Therefore, dual-target corticosteroid injections may be useful for shoulder pain treatment in patients with SIS.