Improving Trainee Competency and Comfort Level with Needle Driving Using Simulation Training.

OBJECTIVE: To assess whether a combination of lecture and model simulation improves resident competency and comfort level with needle driving for interventional pain medicine procedures. DESIGN: Prospective, observational study. METHOD: Trainees who rotated through the University of California, Irvine, outpatient pain medicine clinic were recruited for the study. Subjects were given a brief lecture and completed a survey with questions regarding their level of comfort with interventional pain medicine procedures. This was followed by a timed trial on a training simulator where the objective was to drive a needle to the target. After the trial, the subject was then given a 30-minute practice session with the simulation model. The subject was then asked to repeat the timed trial and complete a post-simulation survey. RESULTS: All measures of the level of comfort increased significantly after subjects underwent the simulation training. In addition, subjects were able to significantly decrease their entrance time (P= 0.002), total time (P= 0.033), and vertical (P≤ 0.001) and horizontal deviation (P≤ 0.001) from the final target point after the simulation training. CONCLUSIONS: Our study demonstrates that simulation training may improve both trainee comfort level and competency with needle driving. After a brief lecture and a 30-minute training session with the simulator, subjective comfort measures and competency measures (more subjects were able to reach the target, vertical and horizontal deviations from the target decreased) were significantly improved. This suggests that simulation may be a helpful tool in teaching needle driving skills.

Spinal cord stimulation for treatment of the pain associated with hereditary multiple osteochondromas.

OBJECTIVE: Hereditary multiple osteochondromas (HMO) usually presents with neoplastic lesions throughout the skeletal system. These lesions frequently cause chronic pain and are conventionally treated with surgical resection and medication. In cases where conventional treatments have failed, spinal cord stimulation (SCS) could be considered as a potential option for pain relief. The objective of this case was to determine if SCS may have a role in treating pain secondary to neoplastic lesions from HMO. CASE PRESENTATION: We report a 65-year-old female who previously received both surgical and pharmacological interventions for treating HMO neoplastic pain in the lumbar, pelvis, femur, and tibial regions. These interventions either failed to offer significant pain relief or caused excessive lethargy. A SCS trial was then offered with a dual 16-contact lead trial leading to 70%-80% improvement in pain from baseline and 85% reduction in oxycodone IR intake. This was followed by permanent implantation of two 2×8 contact paddle leads (T7-T8 and T9-T10 interspaces). After 8-week follow-up, settings were further optimized resulting in an additional 30% improvement in pain compared to last visit. At 6-month follow-up, the patient reported continued pain relief. CONCLUSION: This case demonstrates the first successful use of SCS to treat both HMO and nonmalignant neoplastic-related pain. The patient reported pain improvement from baseline, reduced pain medication requirements, and subjective improvement in quality of life. Additionally, this case demonstrates the potential advantage of trialing multiple painful areas with a 16-contact lead in order to avoid multiple trials and placement.

Complex Regional Pain Syndrome Type II Secondary to Endovascular Aneurysm Repair.

Complex regional pain syndrome (CRPS) is a chronic pain disorder characterized by severe pain and vasomotor and pseudomotor changes. Endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms is a recent advance in vascular surgery that has allowed repair of AAA while offering reduced intensive care unit and hospital lengths of stay, reduced blood loss, fewer major complications, and more rapid recovery. Pseudoaneurysms are a rare complication of an EVAR procedure that may result in a wide range of complications. The present report examines CRPS type II as a novel consequence of pseudoaneurysm formation from brachial artery access in the EVAR procedure. To our knowledge, this is the first reported case of CRPS type II presentation as sequelae of an EVAR procedure.

Ultrasound-guided quadrilateral space block for the diagnosis of quadrilateral syndrome.

Quadrilateral space syndrome (QSS) is a rare nerve entrapment disorder that occurs when the axillary nerve and posterior circumflex humeral artery (PCHA) become compressed in the quadrilateral space. QSS presents as vague posterolateral shoulder pain that is exacerbated upon the abduction and external rotation of the shoulder. Diagnosis of QSS is difficult because of the vague presentation of QSS. In addition, even though MRI and MR angiography can be used in QSS diagnosis, there is currently no "gold standard" diagnostic imaging studies for QSS. In this case report, we describe a novel ultrasound-guided technique for a diagnostic quadrilateral space block and present a case where the diagnostic block was used to diagnose QSS. We believe that a diagnostic block of the quadrilateral space is a useful adjunct in the evaluation of patients with suspected QSS, especially in cases where examination findings and other diagnostic modalities are indeterminate.

Diagnosis and treatment of a lateral meniscal cyst with musculoskeletal ultrasound.

Meniscal cysts are a relatively uncommon occurrence that may result in pain and disability in the knee. It is widely believed that meniscal cysts are secondary to fluid extrusion from a meniscus tear. Typically, diagnosis of a meniscal cyst typically requires magnetic resonance imaging (MRI) to delineate the cyst and any associated injuries. With improvements in sonographic technology, ultrasound has emerged as a sensitive modality for detection of meniscal cysts. We present a patient with a contraindication to MRI who was diagnosed with a lateral meniscal cyst by musculoskeletal ultrasound and treated with an ultrasound-guided lateral meniscal cyst aspiration and injection.

Neuromuscular ultrasound application to the electrodiagnostic evaluation of quadrilateral space syndrome.

Quadrilateral space syndrome (QSS) is a rare neurovascular compression syndrome that results from the compression of the axillary nerve and posterior circumflex humeral artery in the quadrilateral space. Electromyography often is used to evaluate for the presence of neuropathic changes in the deltoid and teres minor in cases of suspected QSS. Needle examination of the teres minor may be challenging because of the muscle's small size and proximity to the infraspinatus. In cases in which patients are overweight or have significant teres minor atrophy, localization of the muscle through conventional methods may be extremely difficult. We present a case of an overweight man with posterior shoulder pain who was diagnosed with QSS via the use of a combination of ultrasound and electromyography.

Mild procedure for lumbar decompression: a review.

Lumbar spinal stenosis (LSS) is characterized by narrowing of the spinal canal with impingement of the spinal cord by surrounding tissues of bones. Current management options for LSS include rest, medications, physical therapy, epidural steroid injections, alternative medicine, and surgical decompression. Because each modality of treatment has its own set of limitations, there is a need for a safe, effective, and cost-saving treatment for LSS. mild is a minimally invasive procedure for treatment of degenerative LSS with ligamentum flavum hypertrophy through percutaneous decompression of the hypertrophic ligamentum flavum. The effect is debulking of tissue that is a contributor to lumbar canal narrowing with minimal trauma to surrounding tissue. This literature review presents a brief review of the pathophysiology, clinical presentation, and current treatment options for LSS and reviews the current literature regarding the efficacy, safety, and cost-effectiveness of the mild procedure.

Effect of home exercise program performance in patients with osteoarthritis of the knee or the spine on the visual analog scale after discharge from physical therapy.

The aim of our study was to assess the effect of the frequency of home exercise program (HEP) performance on pain [10-point visual analog scale (VAS)] in patients with osteoarthritis of the spine or knee after more than 6 months discharge from physical therapy (PT). We performed a retrospective chart review of 48 adult patients with a clinical diagnosis of knee or spine osteoarthritis and had been discharged from PT of the spine or the knee for at least 6 months with provision of HEP from a physical therapist. Adult patients who were younger than 50 years of age, taking more than one medication to control pain, participating in worker's compensation, or had a history of drug abuse were excluded from the study. We recorded patient demographics, pain level (10-point VAS scale), and the number of days that a HEP was performed per week. The mean VAS score of patients who performed 0 days of HEP per week was 6.90. The mean VAS score of patients who performed HEP 1-3 times per week was 6.36. The mean VAS score of patients who performed HEP 4-7 times per week was 5.00. Single-factor analysis of variance analysis indicated a P-value of less than 0.01. Post-hoc comparison of the mean VAS using Fisher's least significant difference test showed a significant difference between the mean VAS score of 4-7 days per week of HEP versus 0 days per week (P<0.01) and 1-3 days per week (P<0.01) of HEP. There was no significant difference in the mean VAS score between 0 days of HEP and 1-3 days of HEP (P>0.05). Patients who performed 4-7 days per week of HEP had statistically significant lower mean VAS scores than patients who performed 0 days per week of HEP and 1-3 days per week of HEP. Therefore, after 6 months of discharge from PT, patients should be encouraged to perform at least 4 days of HEP per week.