Spinal Cord Stimulation with implantation of Surgical Leads is a sufficient salvage therapy for patients suffering from persistent spinal pain syndrome - a retrospective single-center experience.

OBJECTIVE: Persistent spinal pain syndrome (PSPS) poses a significant medical challenge, often leading to diminished quality of life for affected individuals. In response to this clinical dilemma, Spinal Cord Stimulation (SCS) has emerged as a promising intervention aimed at improving the functional outcomes and overall well-being of patients suffering from these debilitating syndrome. In case a therapy with percutaneous lead fails, e.g. due to a dislocation, surgical lead can be used as a stable alternative. This is resulting in a more invasive procedure and does not allow for intraoperative monitoring. The aim of the study is to investigate the efficacy and safety of the use of surgical leads, as there have been only a few case series published so far. METHODS: We included PSPS patients that gave consent to a SCS therapy and were treated with Surgical Leads. Outcome scores concerning the quality of life (SF-36), pain related disability (Oswestry disability index [ODI]), sleeping quality (Pittsburgh Sleep Quality Index [PSQI]), and pain intensity (NRS) were obtained prior surgery and at outpatient visits after permanent implantation. RESULTS: In this study, 36 patients were implanted with a Surgical Lead SCS system. One patient developed a new neurological deficit characterized by left-sided leg paresis attributable to postoperative hemorrhage, and another patient experienced a wound infection. These complications contributed to an overall morbidity rate of 5.6%. In overall 5 patients (20.8%) the electrodes were explanted within the first month. Follow-up data of 24 subjects with a median time of 21 [15-47] months were available. The mean pain intensity at rest and in motion was reduced. Further pain depending disability improved from a median ODIpreop=38 [30-57]% to ODIfollow-up =21 [9-35]% (p<0.01). Additionally the Sleeping Quality and the Quality of Life improved concerning the physical (Median PCS preop=22.5 [20.4-30.4] vs. PCSfollow-up = 41.8 [35.2-47.0], p < 0.01).) and mental (Median MCSpreop=45.4 [31.1-55.5] vs. MCSfollow-up=58.1 [47.6-59.8], p=0.018). component. CONCLUSION: SCS with surgical leads is a safe secondary technique to treat PSPS, where treatment with percutaneous leads fail. The results show a promising long-term effect concerning pain intensity and functional outcome.

A multi-institutional meningioma MRI dataset for automated multi-sequence image segmentation.

Meningiomas are the most common primary intracranial tumors and can be associated with significant morbidity and mortality. Radiologists, neurosurgeons, neuro-oncologists, and radiation oncologists rely on brain MRI for diagnosis, treatment planning, and longitudinal treatment monitoring. However, automated, objective, and quantitative tools for non-invasive assessment of meningiomas on multi-sequence MR images are not available. Here we present the BraTS Pre-operative Meningioma Dataset, as the largest multi-institutional expert annotated multilabel meningioma multi-sequence MR image dataset to date. This dataset includes 1,141 multi-sequence MR images from six sites, each with four structural MRI sequences (T2-, T2/FLAIR-, pre-contrast T1-, and post-contrast T1-weighted) accompanied by expert manually refined segmentations of three distinct meningioma sub-compartments: enhancing tumor, non-enhancing tumor, and surrounding non-enhancing T2/FLAIR hyperintensity. Basic demographic data are provided including age at time of initial imaging, sex, and CNS WHO grade. The goal of releasing this dataset is to facilitate the development of automated computational methods for meningioma segmentation and expedite their incorporation into clinical practice, ultimately targeting improvement in the care of meningioma patients.

Peripheral nerve stimulation for the treatment of chronic knee pain.

The average age of our population is increasing, resulting in a high incidence of chronic degenerative knee pathologies. Several treatment options, including surgical procedures are available to help mitigate these pathologies. However, the percentage of subjects with chronic post-surgical knee pain is still estimated at 16-20%. Neuromodulation techniques such as spinal cord stimulation and dorsal root ganglion stimulation (DRGS) are treatment options for subjects with chronic knee pain. The evidence for peripheral nerve stimulation (PNS) is minimal due to a limited number of neuromodulation systems capable of targeting the distal part of the lower limbs. This study aimed to investigate the safety and efficacy externally powered PNS systems for the treatment of chronic intractable knee pain targeting the saphenous nerve. Patients suffering from chronic intractable post-surgical knee pain received landmark-guided peripheral nerve stimulation of the branches of the saphenous nerve. All implants were performed with an externally powered PNS system to avoid lead migration as a result of cross-joint lead positions tunneling towards an Implantable Pulse Generator to the trunk. Data were collected retrospectively. Subject-reported outcome was measured via numerical rating scale values on a 10-point scale measuring pain intensity at rest and in motion. Additional data were collected for the subjects treated at the Charité location, including quality of life with the SF-36 form, quality of sleep with the Pittsburgh Sleep Quality Index and mood states with the short form of the General Depression Scale. Thirty-three patients received direct to permanent implant, landmark-guided peripheral nerve stimulation of the saphenous nerve branches. Six (18.2%) subjects reported non-sufficient initial benefit from the therapy and were explanted. Two subjects were explanted due to wound infections. The total study population reported included 25 patients. These subjects reported significant improvements related to pain, quality of life, mood quality, and quality of sleep. Additionally, subjects were able to reduce their opioid medication significantly after PNS therapy. Externally powered PNS at the saphenous nerve branches is a straightforward, selective and safe technique for patients with chronic knee pain. The landmark-guided implantation technique is less invasive than classical neuromodulation techniques such as spinal cord or DRGS and complication rates remain low. Short-term results are promising and show considerable reductions in pain scores and opioid intake. Long-term results are pending.