Pudendal Neuralgia: A New Option for Treatment? Preliminary Results on Feasibility and Efficacy

LIPOPULP. The impact of fat grafting on pulp sensitivity in fingertip injuries: A retrospective study of seven patients

OBJECTIVE

This study analyzes the impact of fat grafting on pulp sensitivity disorders in patients who experienced fingertip injuries and developed cold intolerance and hyperesthesia.

MATERIAL/METHOD

Patients over 10 years old were evaluated using the two-point discriminant score (2PDS), the monofilament test, and the McCabe Cold Sensitivity Severity Scale (CSS) before and after surgery at 3, 6, and 12 months. Other evaluations included the Quick Dash scale (Q-dash), the aesthetics and pain improvement, and patient satisfaction. For children under 10 years old, a parent questionnaire was asked about pain reduction and the ability of parents to trim their children's nails.

RESULT

Seven patients (2<10 years old and 5>10 years old) who all presented sensitivity disorders following a fingertip injury and were operated on for a pulp fat grafting were analyzed. No significant effects were found on the two-point discriminant score (2PDS), the McCabe Cold Sensitivity Severity Scale (CSS scale), the monofilament test, as well as the quality of life. Four patients experienced less pain and aesthetic improvement. No outcome occurred. A small quantity of fat (0.97mL) was injected and patient satisfaction was good at 6.4/10. For the two children, it was easier for parents to cut their children's nails.

DISCUSSION/CONCLUSION

While no statistically significant improvement in pulp sensitivity was observed, there were subjective improvements in pain relief and aesthetic outcomes, particularly in children. For children, positive effects were found on pain and the facility for parents to cut their children's nails. More studies are required for children. Pulp fat grafting may be a therapeutic option for patients who suffer from fingertip injury.

Pudendal Neuralgia: A Review of the Current Literature

PURPOSE OF REVIEW

This paper aims to review pudendal neuralgia pathophysiology, risk factors, diagnosis, and treatment options.

RECENT FINDINGS

Conservative and pharmacologic options are first line treatments for the treatment of pudendal neuralgia. Interventional treatment such as, pudendal nerve blocks can be tried if first line treatments feel to provide adequate analgesia. If pudendal nerve blocks provide sufficient relief but have a short duration, decompressive surgery may be considered. Neuromodulation is also a viable option. Emerging techniques such as pulsed radiofrequency ablation, cryotherapy, lipofilling, and repetitive transcranial magnetic stimulation are promising; however, more studies are needed to evaluate safety and effectiveness. Current study data is generally poor, and unstandardized. Further research is needed to identify the optimal treatment approach and evaluate the effects of pudendal neuralgia on mental health and quality of life.

Pathogenesis, Diagnosis, and Management of Trigeminal Neuralgia: A Narrative Review

Trigeminal neuralgia (TN) is an excruciating neurological disorder characterized by intense, stimulus-induced, and transient facial stabbing pain. The classification of TN has changed as a result of new discoveries in the last decade regarding its symptomatology, pathogenesis, and management. Because different types of facial pain have different clinical therapy and neuroimaging interpretations, a precise diagnosis is essential. Diagnosis should include magnetic resonance imaging with specific sequences to rule out secondary causes and to identify possible neurovascular contact. The purpose of demonstrating a neurovascular contact is to aid in surgical decision making, not to validate a diagnosis. Microvascular decompression is the first-line procedure for individuals who do not respond to medical management, whereas carbamazepine and oxcarbazepine are the preferred medications for long-term care. New developments in animal models and neuroimaging methods will shed more light on the biology and etiology of TN. This paper reviews the pathogenesis, the clinical features, the diagnosis, and the management of TN. Furthermore, the potential role of low-intensity pulsed ultrasound in neurological disorders is discussed.

Impact of Treatment of Pudendal Neuralgia on Pain: A Systematic Review and Meta-Analysis

INTRODUCTION AND HYPOTHESIS

Pudendal neuralgia is chronic pelvic pain associated with the pudendal nerve. Unfortunately, the best treatment approach is unknown. Our objective was to systematically assess interventions for pudendal neuralgia for improvement in pain.

METHODS

Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses, we retrieved studies from MEDLINE, EMBASE, and clinicaltrials.gov through May 27, 2024. Our population included patients with pudendal neuralgia. Our interventions included surgery (decompression and nerve stimulation), injections and pulse radiofrequency treatments. Outcomes included improvement in pain (usually on a visual analog scale (VAS)) and adverse events. GRADE criteria were used to assess quality. Differences between pre- and post-intervention pain scores were compared with a random effects REML model and reported as mean difference and 95% confidence intervals.

RESULTS

Six hundred eighty-seven abstracts were screened yielding 37 studies that met eligibility criteria. Treatments included 16 surgeries with 12 nerve decompressions and 4 nerve stimulator placements, 14 injections, and 7 pulse radiofrequency treatments. The majority, 95%, were Grade C. All treatments appear to provide relief to a similar extent (mean difference in VAS of 2.73 cm (1.77, 3.69), p < 0.07, with high heterogeneity I2 = 98.18%), but no treatment was clearly superior for pain relief. Adverse events were inconsistently reported but more severe in the surgery group.

CONCLUSIONS

There are many treatment approaches to pudendal neuralgia, but overall, the evidence includes heterogeneous patient populations, non-standardized treatments, poor-quality studies, variable pain measurement instruments, and short-term follow-up. All interventions improved pain with no statistically significant difference between groups.

YouTube and pudendal neuralgia: Is it a good source of information for patients?

OBJECTIVE

This study aims to identify the shortcomings and quality content of YouTube videos and its effectiveness as a source of patient information on pudendal neuralgia treatment.

METHODS

A search was conducted on YouTube using the words "pudendal neuralgia physical therapy," "medications for pudendal neuralgia," "pudendal nerve block," "pudendal neuralgia surgery," and "alternative treatments for pudendal neuralgia." The results were analyzed based on the source, general descriptive statistics, the intended audience, and five content areas. The DISCERN scoring system was used to evaluate the quality of videos.

RESULTS

After the search, 73 videos met the inclusion criteria for further analysis. The majority of these videos (61.64%) were intended to target the general population, whereas a smaller percentage were identified as professional (41.10%) or targeted for physicians (35.62%). From the videos included, 10 (13.70%) described treatment options in a balanced and evidence-based manner. The higher DISCERN score positively correlated with the presence of this last content criterion. With a total DISCERN mean score of 35.42, a significant proportion of the videos (41.10%) were rated very poor. The remaining videos were classified as poor (23.29%), fair (19.18%), good (8.22%), and excellent (8.22%).

CONCLUSION

The quality of the information included in YouTube videos regarding pudendal neuralgia treatment was considered generally poor. Healthcare providers must recognize the potential influence of this platform on patients' understanding of pudendal neuralgia treatment. There is a need for additional research and randomized studies regarding YouTube content about this condition.

Adipose-derived stem cells modulate neuroinflammation and improve functional recovery in chronic constriction injury of the rat sciatic nerve

Introduction

Compressive neuropathy, a common chronic traumatic injury of peripheral nerves, leads to variable impairment in sensory and motor function. Clinical symptoms persist in a significant portion of patients despite decompression, with muscle atrophy and persistent neuropathic pain affecting 10%-25% of cases. Excessive inflammation and immune cell infiltration in the injured nerve hinder axon regeneration and functional recovery. Although adipose-derived stem cells (ASCs) have demonstrated neural regeneration and immunomodulatory potential, their specific effects on compressive neuropathy are still unclear.

Methods

We conducted modified CCI models on adult male Sprague-Dawley rats to induce irreversible neuropathic pain and muscle atrophy in the sciatic nerve. Intraneural ASC injection and nerve decompression were performed. Behavioral analysis, muscle examination, electrophysiological evaluation, and immunofluorescent examination of the injured nerve and associated DRG were conducted to explore axon regeneration, neuroinflammation, and the modulation of inflammatory gene expression. Transplanted ASCs were tracked to investigate potential beneficial mechanisms on the local nerve and DRG.

Results

Persistent neuropathic pain was induced by chronic constriction of the rat sciatic nerve. Local ASC treatment has demonstrated robust beneficial outcomes, including the alleviation of mechanical allodynia, improvement of gait, regeneration of muscle fibers, and electrophysiological recovery. In addition, locally transplanted ASCs facilitated axon remyelination, alleviated neuroinflammation, and reduced inflammatory cell infiltration of the injured nerve and associated dorsal root ganglion (DRG). Trafficking of the transplanted ASC preserved viability and phenotype less than 7 days but contributed to robust immunomodulatory regulation of inflammatory gene expression in both the injured nerve and DRG.

Discussion

Locally transplanted ASC on compressed nerve improve sensory and motor recoveries from irreversible chronic constriction injury of rat sciatic nerve via alleviation of both local and remote neuroinflammation, suggesting the promising role of adjuvant ASC therapies for clinical compressive neuropathy.

Alpha-2 macroglobulin for the treatment of neuroma pain in the stump of a below-knee amputee patient

This case report describes the successful treatment of neuroma pain in the setting of below knee amputations using alpha-2-macroglobulin (A2M). A 34-year-old female patient presented with 9 months of stump pain despite conservative treatment. The exam revealed persistent pain through rest periods and weight-bearing status during therapy. Ultrasound showed neuroma formation with neovascularization. The patient underwent two A2M hydrodissection treatments, 2 weeks apart. The patient reported significant pain relief. Ultrasound showed decreases in neovascularization and cross-sectional area of the neuroma. The patient was able to ambulate pain-free for 2 years and reported no pain since. A2M may be a treatment for patients with neuroma pain in the setting of amputations.

Diagnostic and therapeutic algorithm for pudendal nerve entrapment syndrome

Pudendal nerve entrapment syndrome is widely unknown and often misdiagnosed or confused with other pelvic floor diseases. The aim is to develop a diagnostic and therapeutic algorithm based on a review of the existing literature. For its diagnosis, an anamnesis will be carried out in search of possible aetiologies, surgical history, and history of pain, assessing location and irradiation, intensity on the visual analogue scale, timing, triggering factors and rule out alarm signs. A physical examination will be performed, looking for trigger points or areas of fibrosis with transvaginal / transrectal palpation of the terminal branches of the nerve. With a doubtful diagnosis, an anaesthetic block of the pudendal nerve can be performed. Once the diagnosis is confirmed, the treatment will begin staggered with lifestyle changes, drug therapy and physiotherapy. In view of the failure of these measures, invasive therapies such as botulinum toxin injection, pulsed radiofrequency and decompression surgery or spinal cord stimulation will be used.

A Review on Stem Cell Therapy for Neuropathic Pain

Neuropathic pain is a complex, chronic pain state that is heterogeneous in nature and caused by the consequence of a lesion or disease affecting the somatosensory system. Current medications give a long-lasting pain relief only in a limited percentage of patients also associated with numerous side effects. Stem cell transplantation is one of the attractive therapeutic platforms for the treatment of a variety of diseases, such as neuropathic pain. Here, the authors review the therapeutic effects of stem cell transplantation of different origin and species in different models of neuropathic pain disorders. Stem cell transplantation could alleviate the neuropathic pain; indeed, stem cells are the source of cells, which differentiate into a variety of cell types and lead trophic factors to migrate to the lesion site opposing the effects of damage. In conclusion, this review suggests that stem cell therapy can be a novel approach for the treatment of neuropathic pain.

Estimate of the proportion of uncertain diagnoses of pudendal neuralgia in women with chronic pelvic-perineal pain: A systematic review with a descriptive data synthesis

BACKGROUND

There is a gap between pudendal neuralgia (PN) due to pudendal entrapment syndrome and PN without pudendal entrapment syndrome. The latter could have atypical symptoms.

AIM

Defining a rate of atypical PN from a clinical series of female patients with chronic pelvic-perineal pain.

METHODS

The atypical PN was defined as a pain not meeting clinical criteria for pudendal entrapment syndrome. The effect size was the rate of atypical PN. Such a rate was expected to be found among patients screened for enrollment in clinical series on pudendal neuropathic pain. A systematic search was performed looking for clinical series on PN. Studies must report information on female patients, pelvic-perineal pain, at least a clinical criterion for diagnosing the pudendal neurogenic origin of pain, the proportion of patients with pain not meeting the clinical criterion/a for diagnosing the pudendal entrapment pain.

RESULTS

From 2637 references, nine studies were included for qualitative analysis. Three of them were not suitable for data synthesis: one assessed the rate of PN after hip arthroscopy; second enrolled miscellaneous patients, a third investigated patients with gynecological diseases. Six studies involved patients with suspicion of pudendal entrapment symptoms (205 patients observed), allowing data synthesis. One of these series was judged as being of good quality. The overall rate of atypical PN is 0.013 (95% confidence interval, 0.008-0.021), I² 0%. Further analysis suggests the risk of bias for all studies.

CONCLUSIONS

Atypical PN in females is low when clinical criteria for pudendal entrapment syndrome are applied.

The Role of Fat Grafting in Alleviating Neuropathic Pain: A Critical Review of the Literature

Background

Neuropathic pain is one of the more severe types of chronic pain and presents a great challenge as response to medical therapy remains often unpredictable. With the opioid epidemic and the search for ways to avoid narcotics, physicians are seeking other modalities to treat neuropathic pain. In recent years, surgeons have explored various surgical avenues to improve outcomes. The aim of this review was to evaluate the current clinical evidence regarding the efficacy of fat grafting for the treatment of neuropathic pain.

Methods

A critical review was conducted to examine the current clinical evidence of fat grafting as a therapy for neuropathic pain caused by neuromas, peripheral neuralgia, migraine and headaches, neuropathic scar pain, and postmastectomy pain syndrome.

Results

The precise mechanism role of fat grafting in modulating neuropathic pain remains unclear, but it appears to reduce pain levels through the anti-inflammatory effects of adipose-derived stem cells and mechanical cushioning by fat.

Conclusions

Fat grafting is an emerging therapy for chronic neuropathic pain of various etiologies. Although promising results have been reported, sample size and level of evidence of current studies are low. The encouraging results, however, are worthy of further clinical and scientific study. The minimally invasive nature of fat grafting and favorable risk profile make this an attractive therapy for neuropathic pain.