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Active clinical trials for "Failed Back Surgery Syndrome"

Results 31-40 of 85

A Study to Confirm the Safety of High Frequency DRG Stimulator in Patients With Chronic Lower Limb...

Failed Back Surgery SyndromeComplex Regional Pain Syndrome (CRPS)

This study is a prospective, single-arm, open label, single center pilot study to confirm the safety of a ultrahigh frequency DRG stimulator in patients with chronic lower limb pain. The actual trial length is 5 days. Pts will be given ultrahigh frequency pulse stimulation, and VAS will be obtained after 3-4 hours of each stimulation.

Completed24 enrollment criteria

Study Comparing Conventional, Burst and High Frequency (HF) Spinal Cord Stimulation (SCS) in Refractory...

Failed Back Surgery Syndrome

Chronic Back and/or Leg Pain (CBLP) after spinal surgical procedures, a condition commonly labelled Failed Back Surgery Syndrome (FBSS), affects between 15% and 40% of patients after a spine surgery. Treatment of this chronic condition by further operation or medical management has a heavy financial impact on health care systems. Many studies have demonstrated the efficacy and economic value of Spinal Cord Stimulation (SCS) for chronic neuropathic pain, and randomized controlled trials (RCTs) have shown SCS to be a clinically effective adjunct to medical management. SCS has the advantages of being reversible and less invasive than surgery and may cause fewer issues over time than long-term pharmacological treatments. Despite variable levels of success in the literature, approximately 30-55% of the patients treated with traditional SCS for neuropathic pain disorders will not receive adequate long term pain relief. Therefore, technical SCS system refinements, as well as new techniques have emerged. Two new stimulation waveforms based on traditional SCS technology have appeared to further optimize the outcome for specific painful conditions; Burst stimulation mode: which generates constant-current stimuli with 5 spikes at 500 Hz per burst and pulse width and interspike intervals of 1 ms. High-frequency stimulation (from 1 to 10 kHz) mode. Several studies have demonstrated the potential interest of these 2 new waveforms to treat FBSS patients compared to traditional SCS. The Precision Spectra™ system allows MultiWave Technology by offering a broad spectrum of waveform options (from Tonic Conventional Stimulation (TCS), BURST stimulation to High Frequency stimulation (HF)). To date, literature data comparing these 3 stimulation patterns is lacking but it is suggested the pain relief in some of non-responsive patients can be "recaptured" by increasing the SCS frequency to 500 Hz by BURST stimulation or beyond by HF stimulation. It seems important to conduct RCT in crossover, thanks to the new Precision SCS Stimulator, to compare the effects of these 3 different SCS modalities in FBSS patients and to determine which concept is the most effective in terms of pain reduction and energy consumption.

Completed23 enrollment criteria

Subcutaneous Stimulation as Add on Therapy to SCS toTreat Low Back Pain in FBSS

Low Back PainFailed Back Surgery Syndrome1 more

Aim of the study Failed back surgery syndrome (FBSS) is a clinical entity consisting of chronic leg and /or back pain due to radicular nerve damage. The effectiveness of Spinal Cord Stimulation (SCS) in the pain management of patients with FBSS is proven. Patients mostly have dominant leg pain, however a significant percentage of FBSS patients has a more pronounced back pain and are commonly excluded from SCS as it is often inadequate in relieving both the back and leg pain components. Recently some reports showed the benefit of subcutaneous stimulation (SubQ) for low back pain in patients with FBSS. This has been confirmed by a feasibility study performed by our group. The aim of the randomized controlled study is to evaluate the effect of SubQ on low back pain in FBSS patients for whom SCS gives an inadequate back pain relief. Hypothesis We hypothesize that SubQ in addition to SCS in FBSS patients with leg and low back pain is more effective in treating low back pain (i.e. >50% pain reduction) than SCS alone.

Completed19 enrollment criteria

Electroacupuncture as a Complement to Usual Care for Patients With Non-acute Pain After Back Surgery...

Low Back PainPain2 more

The purpose of this study is to find out the effectiveness of integrative medicine model for pain relief and improvement of function and quality of life on the patients with pain after back surgery.

Completed15 enrollment criteria

Spinal Cord Stimulation for Predominant Low Back Pain

Failed Back Surgery SyndromeBack Pain2 more

The purpose of this study is to compare the effectiveness of spinal cord stimulation (SCS) using the Medtronic Specify® 5-6-5 multicolumn surgical lead plus optimal medical management (OMM) versus OMM alone in patients suffering from predominant low back pain due to failed back surgery syndrome (FBSS).

Completed14 enrollment criteria

REPETITIVE TRANSCRANIAL MAGNETIC STIMULATION FOR FAILED BACK SURGERY SYNDROME

Failed Back Surgery Syndrome

Failed back surgery syndrome (FBSS) is the term of persistent back and/or leg pain after surgery for lumbar disk herniation (LDH). Repetitive transcranial magnetic stimulation (r-TMS) is a technique that allows non-invasive and relatively painless stimulation of cerebral cortex. It can reduce the experience of chronic pain by using magnetic field to produce small electrical currents in the cortex.The aim of this study is to determine the effectiveness of r-TMS treatment on patients with FBSS.

Completed13 enrollment criteria

Determining the Prognostic Value of Continuous Intrathecal Infusion

Lumbar Post-Laminectomy SyndromeChronic Low Back Pain2 more

The purpose of this study will be to determine the efficacy and the prognostic value of a continuous intrathecal prognostic infusion test in an in-hospital setting for selecting patients who would have better long term outcomes for treatment with intrathecal implantable devices. The investigators will compare the primary outcomes [changes in pain intensity score (NRS), patient global impression of change (PGIC)] before and after intrathecal infusion of an admixture of bupivacaine 0.625 mg/ml and fentanyl 1 mcg/ml versus normal saline. The study will include 36 patients with intractable chronic low back pain in the setting of lumbar post-laminectomy syndrome or vertebral compression fracture who failed conservative management and are considered candidates for IDDS. Prior to the implant, the patients will undergo an intrathecal prognostic infusion test with an externalized catheter. Baseline NRS pain scores will be assessed and documented on all patients upon admission to the preoperative area. An intrathecal catheter will be placed in the outpatient procedure suite at the appropriate level for target dermatomes. The needle entry point will occur in the upper lumbar spine and catheter tip will be placed in the lower thoracic spine, under local anesthesia with the patient awake and with minimal or no sedation. The intrathecal infusion will be started using an external pump once patient is in the PACU. The research component is to perform the intrathecal test with normal saline (inactive placebo solution) in addition to a test with fentanyl and bupivacaine (active solution). Patients will be randomly assigned to either Group I (continuous infusion of bupivacaine and fentanyl followed by saline) or Group II (continuous infusion of saline followed by bupivacaine and fentanyl). In PACU, patients will be started on an infusion rate of 0.5 ml/hr and titrated to pain relief greater than 50% of baseline or up to 0.8-1.0 ml/hr within 6-8 hrs after start of the infusion. A clinician blinded to the treatment arm will assess NRS and PGIC on the patients after approximately 12 hours. Assessment will include changes in pain intensity score at rest and upon ambulating or performing maneuvers that normally elicit patient's low back pain. A 4-6-hour washout period will be allotted with infusion of preservative-free normal saline at a rate of 0.2 ml/hr, after which the physician will document a return of the NRS to baseline before switching therapies.

Completed11 enrollment criteria

Transcriptomic Profile of Patients Treated With Different Modalities of Spinal Cord Stimulation...

Spinal Cord StimulationFailed Back Surgery Syndrome1 more

Failed Back Surgery Syndrome (FBSS) is a relatively common condition that can cause a severe disability in patients. Spinal cord stimulation (SCS) is used in those patients refractory to conventional therapies.In this project the investigators aim to identify new functional molecular basis, defined with transcriptomic profiling, differentially represented in the serum of patients suffering chronic pain caused by FBSS. The investigators will try to Identify "omics" markers for diagnosing and monitoring the process of development and maintenance of pain as well as the evaluation of these as evolutionary disease markers or predictors of the response to SCS therapy. To carry out the project, 40 patients diagnosed with refractory FBSS and treated with an SCS system for pain management will be included. Blood samples will be obtained to analyze the transcription profiling in plasma of patients responding to different modalities of SCS therapy.

Not yet recruiting9 enrollment criteria

Efficacy of Pregabalin in Patients With Radicular Pain

Neuropathy; RadicularLumbar4 more

The purpose of this study is to evaluate whether pregabalin is effective in reducing the pain in patients who present with radicular pain due to a herniated disc, spinal stenosis or failed back surgery syndrome.

Completed19 enrollment criteria

The Pain Suppressive Effect of Alternative Spinal Cord Stimulation Frequencies

Failed Back Surgery SyndromeNeuropathic Pain

Electrical stimulation of the spinal cord (Spinal Cord Stimulation or SCS) for pain relief has been used for decades. It is used most commonly in patients with chronic neuropathic leg pain, after spinal surgery. Conventional neurostimulation is applied in frequencies of 30 to 60 Hertz (Hz) and perceptible paraesthesias are felt. Stimulation using higher frequencies with sub perception paraesthesias has recently challenged the conventional form of neurostimulation.The high frequency stimulation appears to show better pain relief for both back and limb pain in comparison to low frequency SCS, and may also to be effective in some subjects who did not respond to low frequency SCS.

Completed21 enrollment criteria
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