Clinical course of a complex regional pain syndrome type II in upper limb / Evolución clínica de un síndrome doloroso regional complejo tipo II en miembro superior

Abstract: Introduction: the complex regional pain syndrome type II, also called causalgia, is a rare clinical condition that appears after a traumatic or surgical event with evidence of nervous system involvement. Its clinical presentation is the consequence of a multifactorial pathogenic process that involves peripheral and central mechanisms and has variable clinical manifestations. We present the photographic record of a patient with complex regional syndrome type II. Clinical case: 43-year-old patient who consulted for neuropathic pain during the last four years, of severe intensity, associated with sensory, vasomotor and trophic changes in the right upper limb, as a consequence of neurectomy of the palmar digital nerves of the third finger. Conclusion: achieving the photographic record of the clinical phases of complex regional pain syndrome type II in its entirety is difficult, because not all patients present all clinical phases, a fact that gives relevance to this case.

Resumen: Introducción: el síndrome doloroso regional complejo (SDRC) tipo II, también llamado causalgia, es una condición clínica poco frecuente que aparece después de un evento traumático o quirúrgico con evidencia de afectación del sistema nervioso. Su presentación clínica es consecuencia de un proceso patogénico multifactorial que involucra mecanismos periféricos y centrales y tiene manifestaciones clínicas variables. Presentamos el registro fotográfico de un paciente con síndrome regional complejo tipo II. Caso clínico: paciente de 43 años que consultó por dolor neuropático durante los últimos cuatro años, de intensidad severa, asociado a cambios sensoriales, vasomotores y tróficos en miembro superior derecho, como consecuencia de neurectomía de los nervios digitales palmares propios del tercer dedo. Conclusión: lograr el registro fotográfico de las fases clínicas del SDRC tipo II en su totalidad resulta difícil, debido a que no todos los pacientes presentan todas las fases clínicas; hecho que otorga la relevancia a este caso.

The utility of selective partial neurectomy of the musculocutaneous nerve in children with bilateral spastic elbow.

PURPOSE: This study aims to determine the utility of selective partial neurectomy of the musculocutaneous nerve (MCN) in pediatric patients with bilateral spastic elbow. METHODS: A prospective, cross-sectional, case series study was performed in nine pediatric patients (four females and five males) with bilateral spastic elbow, all with a 11.4-year-old average age, where 18 selective partial neurectomies of the MCN were carried out. They were evaluated with goniometry of both spastic elbows at resting position and active amplitude, and staging spasticity employing the Modified Ashworth Scale (MAS) in the preoperative and postoperative period. The results are reported 1 year after surgery. RESULTS: The etiology of the spasticity was secondary to cerebral palsy in eight patients (88.8%) and in one patient (11.11%) secondary to traumatic brain injury. A clinical improvement was observed in goniometry comparing the preoperative and postoperative resting position, a mean preoperative of 44.38 degrees (SD ± 7.61) versus 98.05 degrees (SD ± 24.44), respectively, and preoperative active amplitude a mean of 86.55 degrees (SD ± 15.97) versus the mean postoperative of 47.33 (SD ± 17.86). A relevant decrease on the MAS after surgical intervention was observed, resulting from an average preoperative state according to MAS of 3.78 (SD ± 0.42) to a postoperative state according to MAS of 1.44 (SD ± 0.51), these changes being statistically significant (p ≤ 0.001). No postoperative complications were observed. CONCLUSIONS: Selective partial neurectomy of the MCN has shown good results in patients with bilateral spastic elbow in whom antispastic drugs and physical therapy have failed, and has prove permanent effects.

Groin pain of neurological origin as a differential diagnosis of femoroacetabular impingement.

BACKGROUND: To describe the experience in the diagnostic process and treatment of patients with groin pain (GP) of neurological origin due to entrapment of the iliohypogastric (IH), ilioinguinal (IL) and genitofemoral (GF) nerves in a hip preservation clinic. METHODS: Retrospective study of patients with GP of neurological origin confirmed with ultrasound-guided nerve block. Clinical outcomes were reported in 21 cases (age, 53.3 ± 15.9 years) treated with conservative treatment from January to December 2019, and in 9 patients (age 43.7 ± 14.6 years) who underwent neurectomy from January 2015 to December 2019. Pain intensity was assessed with a numerical rating scale (NRS) before starting the diagnostic process (Day 0) and at the end of follow-up. RESULTS: All cases reported pain on groin palpation. Half of these cases also reported a positive FADIR test (flexion, adduction, internal rotation) (15/30). On day 0, the intensity of pain in cases treated with conservative treatment was severe in 19 patients (NRS 7-10) and moderate in 2 (NRS 4-6), with a median improvement of 7 points (interquartile range [IQR] 5.5-8.0) at the end of follow-up (p < 0.001). In neurectomy group, a similar improvement in pain severity was (Day 0: 9 points [IQR 8.0-9.0]; end of follow-up: 0 points [IQR: 0-2.0]; p = 0.002). At the end of the study, 17/21 patients with conservative treatment and 7/9 with neurectomy were pain free or with mild pain (NRS < 3). CONCLUSIONS: In cases with PG of neurological origin, there is a high frequency of false positives in the FADIR test. Our findings suggest that neurectomy is a treatment option for patients in whom conservative treatment fails, providing significant pain relief.

Terminal nerve entry points' locations to muscles of the thigh for selective peripheral neurectomy in the adult population: a cadaveric study.

PURPOSE: Spasticity is the result of a variety of lesions to the central nervous system and one of the most common causes of disability worldwide. Selective peripheral neurectomy (SPN) is a surgical procedure that permanently decreases focal spasticity. The authors' objective is to provide recommendations, in terms of probabilities, for locating terminal motor entry points to muscles of the thigh, as alternatives for proximal incision sites to SPN. METHODS: The femoral, obturator, and sciatic nerves, and its corresponding motor rami, were systematically dissected on cadaveric specimens, and terminal motor entry points to each muscle of the thigh were located and carefully measured, relative to the length of the thigh. Measurement distributions were obtained and normal transformations were used when necessary. RESULTS: In 23 adult cadaveric specimens, 779 motor rami were dissected. Entry points' locations are presented as a percentage of the length of the thigh in means and standard deviations, which roughly corresponds to 64 and 95% probability of finding a motor entry point. CONCLUSION: Alternative incisions directly over the motor entry points, for the muscles of the thigh, may be helpful when considering SPN as treatment for focal spasticity. A prior degree of certainty of the location of the nerve to be severed may simplify surgical approach.

Clinical course of a complex regional pain syndrome type II in upper limb.

INTRODUCTION: the complex regional pain syndrome type II, also called causalgia, is a rare clinical condition that appears after a traumatic or surgical event with evidence of nervous system involvement. Its clinical presentation is the consequence of a multifactorial pathogenic process that involves peripheral and central mechanisms and has variable clinical manifestations. We present the photographic record of a patient with complex regional syndrome type II. CLINICAL CASE: 43-year-old patient who consulted for neuropathic pain during the last four years, of severe intensity, associated with sensory, vasomotor and trophic changes in the right upper limb, as a consequence of neurectomy of the palmar digital nerves of the third finger. CONCLUSION: achieving the photographic record of the clinical phases of complex regional pain syndrome type II in its entirety is difficult, because not all patients present all clinical phases, a fact that gives relevance to this case.

INTRODUCCIÓN: el síndrome doloroso regional complejo (SDRC) tipo II, también llamado causalgia, es una condición clínica poco frecuente que aparece después de un evento traumático o quirúrgico con evidencia de afectación del sistema nervioso. Su presentación clínica es consecuencia de un proceso patogénico multifactorial que involucra mecanismos periféricos y centrales y tiene manifestaciones clínicas variables. Presentamos el registro fotográfico de un paciente con síndrome regional complejo tipo II. CASO CLÍNICO: paciente de 43 años que consultó por dolor neuropático durante los últimos cuatro años, de intensidad severa, asociado a cambios sensoriales, vasomotores y tróficos en miembro superior derecho, como consecuencia de neurectomía de los nervios digitales palmares propios del tercer dedo. CONCLUSIÓN: lograr el registro fotográfico de las fases clínicas del SDRC tipo II en su totalidad resulta difícil, debido a que no todos los pacientes presentan todas las fases clínicas; hecho que otorga la relevancia a este caso.

Intervencionismo para el control del dolor por metástasis óseas / Interventionism for pain control due bone metastases

Objetivo: El dolor óseo por cáncer óseo o metástasis es un dolor de difícil manejo asociado a dolor incidental. Hay distintas estrategias quirúrgicas para su tratamiento, sin embargo, no todos los pacientes con metástasis óseas pueden beneficiarse de un tratamiento quirúrgico. La presente revisión bibliográfica tiene como objetivo identificar terapias intervencionales mínimamente invasivas para el control del dolor por metástasis óseas. Métodos: Revisión bibliográfica acerca de terapias intervencionales para el control del dolor por metástasis óseas utilizando la base de datos PubMed (www.pubmed.gov) y el motor de búsqueda Google (www.google.cl). Tipos de participantes: Pacientes con metástasis óseas dolorosas de cualquier tumor primario. Tipos de intervenciones: Bloqueos anestésicos, bloqueos neurolíticos, terapias ablativas, cementoplastías. Resultados: Se obtuvieron 384 resultados que incluyeron revisiones sistemáticas, revisiones bibliográficas, ensayos clínicos controlados, series de casos y reporte de casos. Todos los artículos relevantes en inglés y español se incluyeron para su análisis. Conclusión: Las metástasis óseas son un evento común en los pacientes con cáncer, y el dolor óseo es un dolor de difícil manejo asociado a dolor incidental. Se han desarrollado terapias intervencionales no invasivas o mínimamente invasivas para tratar el dolor, mejorar la calidad de vida y la funcionalidad, disminuir el consumo de fármacos, y reducir el tamaño del tumor. La gran mayoría ha demostrado ser terapias seguras y eficaces, con pocos eventos adversos y de rápida resolución, y que si son combinadas mejoran los resultados.

Objective: Bone pain from bone cancer or metastasis is a pain that is difficult to manage associated with incidental pain. There are different surgical strategies for its treatment, however, not all patients with bone metastases can benefit from a surgical treatment. This literature review aims to identify minimally invasive interventional therapies for the control of pain due to bone metastasis. Methods: Literature review of interventional therapies for the control of pain due to bone metastases was done using the PubMed database (www.pubmed.gov) and the Google search engine (www.google.cl). Types of participants: Patients with painful bone metastases from any primary tumor. Types of interventions: Anesthetic blocks, neurolytic blocks, ablative therapies, cementoplasties. Results: We obtained 384 results that included systematic reviews, literature reviews, controlled clinical trials, case series and case reports. All relevant articles in English and Spanish were included for analysis. Conclusion: Bone metastases are a common event in cancer patients, and bone pain is a difficult-to-manage pain associated with incidental pain. Non-invasive or minimally invasive interventional therapies have been developed to treat pain, improve quality of life and functionality, decrease drug use, and reduce tumor size. The vast majority therapies have been shown to be safe and effective ones, with few adverse events and rapid resolution, and that if combined they improve the outcomes.

Treatment of Morton's neuroma with minimally invasive distal metatarsal metaphyseal osteotomy (DMMO) and percutaneous release of the deep transverse metatarsal ligament (DTML): a case series with minimum two-year follow-up.

BACKGROUND: The optimal treatment of symptomatic Morton's neuroma remains unclear; conservative methods are sometimes ineffective and neurectomy has significant rates of patient dissatisfaction. The aim of this study was to evaluate the outcome of minimally invasive distal metatarsal metaphyseal osteotomy (DMMO) and percutaneous release of the deep transverse metatarsal ligament (DTML) in patients with Morton's neuroma. METHODS: Between January 2018 and November 2019, 27 patients (29 feet) diagnosed with Morton's neuroma after clinical and radiological evaluation underwent DMMO and percutaneous DTML release. The primary clinical outcomes were pain (VAS) and function (AOFAS score). Secondary outcomes included patient satisfaction, complications, and radiographic outcomes. Patients were followed up for a minimum of two years. RESULTS: The median age of the participants was 66 years (range 48-79) and the follow-up time was 28 months (24-47). There was a decrease of 5.7 points in the VAS for pain (p < .001) and an increase of 19.9 in AOFAS (p < .001) after the surgical procedure. There was one case of superficial infection and one patient required resection of the neuroma (neurectomy). The majority of patients (89.7%) were satisfied and considered the procedure outcome as excellent or good. CONCLUSION: Treatment of Morton's neuroma with minimally invasive distal metatarsal metaphyseal osteotomy and percutaneous release of the deep transverse metatarsal ligament showed significant improvement in pain and function with a low incidence of complications and a high rate of personal satisfaction.

The long-term outcomes of posterior nasal neurectomy with or without pharyngeal neurectomy in patients with allergic rhinitis: a randomized controlled trial.

INTRODUCTION: Allergic rhinitis is a form of IgE mediated inflammation of the nasal mucosa in response to specific allergens, resulting in typical symptoms. OBJECTIVES: This study was designed with the primary goal of comparing the clinical efficacy of posterior nasal neurectomy with or without pharyngeal neurectomy for the treatment of moderate-to-severe perennial allergic rhinitis. Secondary study aims included a comparison of the severity of comorbidities, including chronic cough and asthma, between patients in these two surgical treatment groups. METHODS: A total of 52 patients were enrolled in this randomized controlled trial and were assigned to either the control group (posterior nasal neurectomy) or the experimental group (posterior nasal neurectomy + pharyngeal neurectomy). The visual analog scale and rhinoconjunctivitis quality of life questionnaire were used to compare the differences in patient symptoms between baseline and 6-, 12-, and 24-months post-treatment. In addition, patient cough and asthma symptoms were monitored during follow-up via visual analog scale and asthma control test respectively. RESULTS: No significant differences in preoperative scores were evident between groups (p > 0.05). At 6-months post-treatment, there were significant differences in visual analog scale, rhinoconjunctivitis quality of life questionnaire, and asthma control test scores relative to baseline values in experimental group and control group patients (p < 0.05), and this remained true upon 12- and 24-month follow-up. No significant differences in visual analog scale, rhinoconjunctivitis quality of life questionnaire, or asthma control test scores were observed between the two treatment groups at any postoperative follow-up time point (p > 0.05), while coughing severity was found to be significantly reduced in the experimental group relative to the control group (p < 0.05). CONCLUSION: posterior nasal neurectomy can be safely implemented with or without pharyngeal neurectomy in order to effectively treat allergic rhinitis. Combined posterior nasal neurectomy and pharyngeal neurectomy treatment may offer greater value than posterior nasal neurectomy alone for the treatment of allergic rhinitis patients with chronic cough.

The long-term outcomes of posterior nasal neurectomy with or without pharyngeal neurectomy in patients with allergic rhinitis: a randomized controlled trial / Os resultados no longo prazo da neurectomia nasal posterior com ou sem neurectomia faríngea em pacientes com rinite alérgica: um ensaio clínico randomizado

Abstract Introduction Allergic rhinitis is a form of IgE mediated inflammation of the nasal mucosa in response to specific allergens, resulting in typical symptoms. Objectives This study was designed with the primary goal of comparing the clinical efficacy of posterior nasal neurectomy with or without pharyngeal neurectomy for the treatment of moderate-to-severe perennial allergic rhinitis. Secondary study aims included a comparison of the severity of comorbidities, including chronic cough and asthma, between patients in these two surgical treatment groups. Methods A total of 52 patients were enrolled in this randomized controlled trial and were assigned to either the control group (posterior nasal neurectomy) or the experimental group (posterior nasal neurectomy + pharyngeal neurectomy). The visual analog scale and rhinoconjunctivitis quality of life questionnaire were used to compare the differences in patient symptoms between baseline and 6-, 12-, and 24-months post-treatment. In addition, patient cough and asthma symptoms were monitored during follow-up via visual analog scale and asthma control test respectively. Results No significant differences in preoperative scores were evident between groups (p> 0.05). At 6-months post-treatment, there were significant differences in visual analog scale, rhinoconjunctivitis quality of life questionnaire, and asthma control test scores relative to baseline values in experimental group and control group patients (p< 0.05), and this remained true upon 12- and 24-month follow-up. No significant differences in visual analog scale, rhinoconjunctivitis quality of life questionnaire, or asthma control test scores were observed between the two treatment groups at any postoperative follow-up time point (p> 0.05), while coughing severity was found to be significantly reduced in the experimental group relative to the control group (p< 0.05). Conclusion posterior nasal neurectomy can be safely implemented with or without pharyngeal neurectomy in order to effectively treat allergic rhinitis. Combined posterior nasal neurectomy and pharyngeal neurectomy treatment may offer greater value than posterior nasal neurectomy alone for the treatment of allergic rhinitis patients with chronic cough.

Resumo Introdução A rinite alérgica é uma forma de inflamação da mucosa nasal mediada por IgE em resposta a alérgenos específicos, resulta em sintomas típicos. Objetivos Comparar a eficácia clínica da neurectomia nasal posterior com ou sem neurectomia faríngea para o tratamento da rinite alérgica perene de moderada a grave. Além disso, comparar a gravidade das comorbidades, inclusive tosse crônica e asma, entre os pacientes nesses dois grupos de tratamento cirúrgico. Método Foram incluidos neste ensaio clínico randomizado e designados para o grupo controle (neurectomia nasal posterior) ou para o grupo experimental (neurectomia nasal posterior + neurectomia faríngea) 52 pacientes. A escala visual analógica e o questionário de qualidade de vida na rinoconjuntivite (rhinoconjunctivitis quality of life questionnaire) foram usados para comparar as diferenças nos sintomas dos pacientes entre o período inicial e 6, 12 e 24 meses após o tratamento. Além disso, a tosse e os sintomas de asma dos pacientes foram monitorados durante o acompanhamento por meio da escala visual analógica e do teste de controle da asma (asthma control test ), respectivamente. Resultados Nenhuma diferença significante nos escores pré‐operatórios foi evidenciada entre os grupos (p > 0,05). Aos seis meses pós‐tratamento, houve diferenças significantes nos escores da escala visual analógica, no questionário de qualidade de vida na rinoconjuntivite e no teste de controle de asma em relação aos valores basais dos pacientes no grupo experimental e no grupo controle (p < 0,05), o que permaneceu verdadeiro após 12 e 24 meses de acompanhamento. Não foram observadas diferenças significantes nos escores da escala visual analógica e nem no questionário de qualidade de vida para conjuntivite ou no teste de controle da asma entre os dois grupos de tratamento em qualquer momento do acompanhamento pós‐operatório (p > 0,05), enquanto a gravidade da tosse foi significantemente reduzida no grupo experimental em relação ao grupo controle (p < 0,05). Conclusão A neurectomia nasal posterior pôde ser feita com segurança com ou sem neurectomia faríngea para o tratamento eficaz da rinite alérgica. O tratamento combinado com neurectomia nasal posterior e neurectomia faríngea pode oferecer mais benefício do que a neurectomia nasal posterior isolada para o tratamento de pacientes com rinite alérgica e tosse crônica.

Neurectomy of C2 for the Treatment of Occipital Neuralgia: Case Report

Occipital neuralgia (ON) is an uncommon cause of headache, and it is characterized by a stabbing paroxysmal pain that radiates to the occipital region. The present study includes a review of the literature and a case report. The etiology of this pathology can vary from traumas, infections, compressions of nerves or vertebrae, skull base surgeries, to degenerative changes and congenital anomalies. However, most of the time, the etiology is considered idiopathic. The diagnosis is essentially clinical. However, it is crucial that other types of primary headache are excluded. The treatment for ON may be based on nerve blocks, medications or surgeries. Neurectomy of the second spinal nerve is among the surgical techniques available.

The anatomic analysis of the vidian canal and the surrounding structures concerning vidian neurectomy using computed tomography scans / Avaliação anatômica do canal vidiano e estruturas adjacentes por tomografia computadorizada para a neurectomia do vidiano

Abstract Introduction: The type of endoscopic approach chosen for vidian neurectomy can be specified by evaluating the vidian canal and the surrounding sphenoid sinus structures. Objective: The variations and morphometry of the vidian canal were investigated, focusing on the functional correlations between them which are crucial anatomical landmarks for preoperative planning. Methods: This study was performed using paranasal multidetector computed tomography images that were obtained with a section thickening of 0.625 mm of 250 adults. Results: The distributions of 500 vidian canal variants were categorized as follows; Type 1, within the sphenoid corpus (55.6%); Type 2, partially protruding into the sphenoid sinus (34.8%); Type 3, within the sphenoid sinus (9.6%). The pneumatization of the pterygoid process is mostly seen in vidian canal Type 2 (72.4%) and Type 3 (95.8%) (p < 0.001). The mean distances from the vidian canal to the foramen rotundum and the palatovaginal canal were greater in the vidian canal Type 2 and 3 with the pterygoid process pneumatization (p < 0.001). The prevalence of the intrasphenoid septum between the vidian canal and the vomerine crest and lateral attachment which ending on carotid prominence were much higher in vidian canal Type 3 than other types (p < 0.001). The mean angle between the posterior end of the middle turbinate and the lateral margin of the anterior opening of the vidian canal was measured as 33.05 ± 7.71°. Conclusions: Preoperative radiologic analysis of the vidian canal and the surrounding structures will allow surgeons to choose an appropriate endoscopic approach to ensure predictable postoperative outcomes.

Resumo Introdução: O tipo de abordagem endoscópica para a neurectomia do vidiano pode ser definido pela avaliação do canal do vidiano e das estruturas adjacentes aos seios esfenoidais. Objetivo: Investigar as variações e a morfometria do canal vidiano com enfoque nas suas correlações funcionais, pois são parâmetros anatômicos cruciais para o planejamento pré-operatório. Método: Esse estudo foi realizado utilizando-se imagens de tomografia computadorizada multidetectores dos seios paranasais com espessura de corte de 0,625 mm obtidas de 250 indivíduos adultos. Resultados: A distribuição das 500 variantes do canal vidiano foi categorizada da seguinte forma: Tipo 1, dentro do corpo ósseo esfenoidal (55,6%); Tipo 2, protrusão parcial no interior do seio esfenoidal (34,8%); Tipo 3, no interior do seio esfenoidal (9,6%). A pneumatização do processo pterigoide foi observada principalmente no canal vidiano Tipo 2 (72,4%) e Tipo 3 (95,8%) (p < 0,001). As distâncias médias do canal vidiano até o forame redondo e o canal palatovaginal foram maiores no canal vidiano do Tipo 2 e 3, com a pneumatização do processo pterigoide (p < 0,001). A presença do septo intraesfenoidal entre o canal vidiano e a crista vomeriana e a extensão lateral, que termina na proeminência da carótida, foi muito maior no canal vidiano Tipo 3 do que nos outros tipos (p < 0,001). A angulação média entre a cauda da concha média e a margem lateral da abertura anterior do canal vidiano foi de 33,05° ± 7,71°. Conclusões: A análise radiológica pré-operatória do canal do vidiano e das estruturas circunjacentes permitem ao cirurgião escolher uma abordagem endoscópica apropriada e prever resultados pós-operatórios.

The anatomic analysis of the vidian canal and the surrounding structures concerning vidian neurectomy using computed tomography scans.

INTRODUCTION: The type of endoscopic approach chosen for vidian neurectomy can be specified by evaluating the vidian canal and the surrounding sphenoid sinus structures. OBJECTIVE: The variations and morphometry of the vidian canal were investigated, focusing on the functional correlations between them which are crucial anatomical landmarks for preoperative planning. METHODS: This study was performed using paranasal multidetector computed tomography images that were obtained with a section thickening of 0.625mm of 250 adults. RESULTS: The distributions of 500 vidian canal variants were categorized as follows; Type 1, within the sphenoid corpus (55.6%); Type 2, partially protruding into the sphenoid sinus (34.8%); Type 3, within the sphenoid sinus (9.6%). The pneumatization of the pterygoid process is mostly seen in vidian canal Type 2 (72.4%) and Type 3 (95.8%) (p<0.001). The mean distances from the vidian canal to the foramen rotundum and the palatovaginal canal were greater in the vidian canal Type 2 and 3 with the pterygoid process pneumatization (p<0.001). The prevalence of the intrasphenoid septum between the vidian canal and the vomerine crest and lateral attachment which ending on carotid prominence were much higher in vidian canal Type 3 than other types (p<0.001). The mean angle between the posterior end of the middle turbinate and the lateral margin of the anterior opening of the vidian canal was measured as 33.05±7.71°. CONCLUSIONS: Preoperative radiologic analysis of the vidian canal and the surrounding structures will allow surgeons to choose an appropriate endoscopic approach to ensure predictable postoperative outcomes.

Resección de nervios inguinales versus sección simple para prevenir dolor postoperatorio en hernioplastia con prótesis / Resection of Inguinal Nerves Versus Simple Section to Prevent Postoperative Pain in Hernioplasty with Prosthesis

Introducción: la incidencia del dolor crónico en pacientes sometidos a hernioplastia con prótesis es de aproximadamente del 10%. Considerando como inguinodínea crónica aquella que dura tres meses o más. La causa mejor conocida es la neuropática y se proponen múltiples estrategias para su tratamiento. Objetivo: comparar dos técnicas de neurectomía para prevenir dolor postoperatorio en hernioplastia con prótesis. Método: se incluyeron 175 pacientes a los que se realizó hernioplastia electiva con prótesis en el período abril 2011 a mayo 2013; para comparar dos técnicas. Se realizó resección de 5-10 cm del nervio a 100 pacientes y a 75 casos sección simple o resección mínima (1 cm). Resultados: en el grupo 1, a las dos semanas el 61% de los pacientes refería dolor moderado, solo uno con dolor intenso. Un mes después el 14% reflejó dolor moderado, y uno con dolor intenso. Un año después solo un paciente refirió dolor moderado. En el grupo 2, a las dos semanas el 62,7% describió dolor moderado y nueve (12%) refirió dolor intenso. Un mes el 44% narró dolor moderado y ocho (10,7%) mantenían dolor intenso. Un año después, ocho (10,7%) reflejó con dolor moderado constante y de estos un paciente se reingresó para tratamiento quirúrgico. La baja incidencia del dolor crónico después de neurectomía fue significativa (1 % vs. 10,7%; p=0,012); la incidencia del dolor intenso a corto y mediano plazo, así como, el dolor moderado al mes fue también menor. Conclusión: La resección profiláctica del nervio fue más efectiva que la simple sección para evitar el dolor postoperatorio.

Introduction: The incidence of chronic pain in patients undergoing prosthetic hernioplasty is approximately 10%. Considering as chronic inguinodinea the one that lasts three months or more. The best known cause is neuropathic and multiple strategies are proposed for its treatment. Objetive: Compare two techniques of neurectomy to prevent postoperative pain in prosthetic hernioplasty. Method: one hundred seventy five patients, who had underwent inguinal prosthetic hernioplasty between April 2011 and May 2013 were included; to compare two techniques. Resection of 5-10 cm of the nerve was done to 100 patients and to 75 cases simple section or minimal resection (1 cm). Results: in group 1, at two weeks, 61% of the patients reported moderate pain, only one with severe pain. One month later, 14% showed moderate pain, and one with severe pain. One year later only one patient reported moderate pain. In group 2, at two weeks, 62.7% reported moderate pain and nine (12%) reported severe pain. One month, 44% reported moderate pain and 8 (10.7%) continued with severe pain. One year later, eight (10.7%) reflected with constant moderate pain and of these one patient was re-entered for surgical treatment. The low incidence of chronic pain after neurectomy was significant (1% vs. 10.7%, p = 0.012); the incidence of intense pain in the short and medium term, as well as, moderate pain per month was also lower. Conclusion: prophylactic resection of the nerve was more effective than the simple section to avoid postoperative pain.

Anatomical study of the motor branches of the median nerve to the forearm and guidelines for selective neurectomy.

PURPOSE: The median nerve is responsible for the motor innervation of most of the muscles usually involved in upper limb spasticity. Selective neurectomy is one of the treatments utilized to reduce spasticity. The purpose of this study was to describe the variations of the motor branches of the median nerve in the forearm and draw recommendations for an appropriate planning of selective neurectomy. MATERIALS AND METHODS: The median nerve was dissected in the forearm of 20 fresh cadaver upper limbs. Measurements included number, origin, division, and entry point of each motor branch into the muscles. RESULTS: One branch for the pronator teres was the most common pattern. In 9/20 cases, it arose as a common trunk with other branches. A single trunk innervated the flexor carpi radialis with a common origin with other branches in 17/20 cases. Two, three or four branches innervated the flexor digitorum superficialis, the first one frequently through a common trunk with other branches. They were very difficult to identify unless insertions of pronator teres and flexor digitorum superficialis were detached. The flexor digitorum profundus received one to five branches and flexor pollicis longus one to two branches from the anterior interosseous nerve. CONCLUSIONS: There is no regular pattern of the motor branches of the median nerve in the forearm. Our findings differ in many points from the classical literature. Because of the frequency of common trunks for different muscles, we recommend the use of peroperative electrical stimulation. Selective neurotomy of flexor digitorum superficialis is technically difficult, because the entry point of some of their terminal branches occurs just below the arch and deep to the muscle belly.

Empiricism and inefficiency in cultural practice of disconnect horses in Northeastern of Brazil: cases study / Empirismo e ineficiência na prática cultural de desgovernar equinos no nordeste brasileiro: estudo de casos

In Northeastern of Brazil is practiced surgical procedure called "disconnect" with the aim of eliminate chronic lameness in horses. The act is carried out for several decades as a regional cultural element incorporated into the population customs and traditionally practiced by laypeople and veterinarians. This paper aims characterize the surgical procedure known as "disconnect", citing their different access and technical efficiency through information obtained through direct survey of performers (veterinarians or lay) and owners of animals that have undergone the procedure. According to the descriptions, the procedure has four surgical approaches, and can be defined as vascular section followed by profuse bleeding, with or without hemostasis ligature, at medial access of the proximal or distal region of the fore and hindlimbs. The information obtained and the anatomical structural analysis indicate that the practice of "disconnect" is characterized by phlebotomy, associated or not with neurectomy, being a questionable, empirical and inefficient procedure in the treatment of lameness. From the cases report developed, the initial character on the subject concludes the absence of therapy evidence in animals undergoing the procedure, counter indicating it in the clinical and surgical routine horses.

Na região nordeste do Brasil pratica-se o procedimento cirúrgico denominado desgovernar com objetivo de eliminar claudicações crônicas em equinos. O ato é realizado há várias décadas como um elemento cultural regional, incorporado aos costumes da população e habitualmente praticado por leigos e médicos veterinários. Este artigo objetiva identificar o ato cirúrgico conhecido como desgovernar, citando seus diferentes acessos e eficiência da técnica, a partir de informações obtidas através de inquérito direto aos executores (médicos veterinários ou leigos) e proprietários de animais que foram submetidos ao procedimento. De acordo com as descrições, o procedimento possui quatro acessos cirúrgicos, na face medial da região proximal ou distal dos membros torácicos e pélvicos, podendo ser definido como secção vascular seguida de hemorragia profusa, com ou sem hemostasia por ligadura. As informações obtidas e a análise estrutural anatômica indicam que a prática de desgovernar é caracterizada por flebotomia seguida ou não de neurectomia, sendo um procedimento questionável, empírico e ineficiente no tratamento das claudicações. A partir do estudo de casos desenvolvido, de caráter inicial sobre a temática, conclui-se a ausência da comprovação terapêutica nos animais submetidos ao procedimento, o contra indicando na rotina clínico-cirúrgica de equinos.

Empiricism and inefficiency in cultural practice of disconnect horses in Northeastern of Brazil: cases study / Empirismo e ineficiência na prática cultural de desgovernar equinos no nordeste brasileiro: estudo de casos

In Northeastern of Brazil is practiced surgical procedure called "disconnect" with the aim of eliminate chronic lameness in horses. The act is carried out for several decades as a regional cultural element incorporated into the population customs and traditionally practiced by laypeople and veterinarians. This paper aims characterize the surgical procedure known as "disconnect", citing their different access and technical efficiency through information obtained through direct survey of performers (veterinarians or lay) and owners of animals that have undergone the procedure. According to the descriptions, the procedure has four surgical approaches, and can be defined as vascular section followed by profuse bleeding, with or without hemostasis ligature, at medial access of the proximal or distal region of the fore and hindlimbs. The information obtained and the anatomical structural analysis indicate that the practice of "disconnect" is characterized by phlebotomy, associated or not with neurectomy, being a questionable, empirical and inefficient procedure in the treatment of lameness. From the cases report developed, the initial character on the subject concludes the absence of therapy evidence in animals undergoing the procedure, counter indicating it in the clinical and surgical routine horses.(AU)

Na região nordeste do Brasil pratica-se o procedimento cirúrgico denominado desgovernar com objetivo de eliminar claudicações crônicas em equinos. O ato é realizado há várias décadas como um elemento cultural regional, incorporado aos costumes da população e habitualmente praticado por leigos e médicos veterinários. Este artigo objetiva identificar o ato cirúrgico conhecido como desgovernar, citando seus diferentes acessos e eficiência da técnica, a partir de informações obtidas através de inquérito direto aos executores (médicos veterinários ou leigos) e proprietários de animais que foram submetidos ao procedimento. De acordo com as descrições, o procedimento possui quatro acessos cirúrgicos, na face medial da região proximal ou distal dos membros torácicos e pélvicos, podendo ser definido como secção vascular seguida de hemorragia profusa, com ou sem hemostasia por ligadura. As informações obtidas e a análise estrutural anatômica indicam que a prática de desgovernar é caracterizada por flebotomia seguida ou não de neurectomia, sendo um procedimento questionável, empírico e ineficiente no tratamento das claudicações. A partir do estudo de casos desenvolvido, de caráter inicial sobre a temática, conclui-se a ausência da comprovação terapêutica nos animais submetidos ao procedimento, o contra indicando na rotina clínico-cirúrgica de equinos.(AU)

Motor branches of the ulnar nerve to the forearm: an anatomical study and guidelines for selective neurectomy.

PURPOSE: Precise knowledge of motor nerve branches is critical to plan selective neurectomies for the treatment of spastic limbs. Our objective is to describe the muscular branching pattern of the ulnar nerve in the forearm and suggest an ideal surgical approach for selective neurectomy of the flexor carpi ulnaris. METHODS: The ulnar nerve was dissected under loop magnification in 20 upper limbs of fresh frozen cadavers and its branches to the flexor carpi ulnaris muscle (FCU) and to the flexor digitorum profundus muscle (FDP) were quantified. We measured their diameter, length and distance between their origin and the medial epicondyle. The point where the ulnar artery joined the nerve was observed. The position in which the ulnar nerve gave off each branch was noted (ulnar, posterior or radial) and the Martin-Gruber connection, when present, had its origin observed and its diameter measured. RESULTS: The ulnar nerve gave off two to five muscular branches, among which, one to four to the FCU and one or two to the FDP. In all cases, the first branch was to the FCU. It arose on average 1.4 cm distal to the epicondyle, but in four specimens it arose above or at the level of the medial epicondyle (2.0 cm above in one case, 1.5 cm above in two cases, and at the level of the medial epicondyle in one). The first branch to the FDP arose on average 5.0 cm distal to the medial epicondyle. All the branches to FDP but one arose from the radial aspect of the ulnar nerve. A Martin-Gruber connection was present in nine cases. All motor branches arose in the proximal half of the forearm and the ulnar nerve did not give off branches distal to the point where it was joined by the ulnar artery. CONCLUSIONS: The number of motor branches of the ulnar nerve to the FCU varies from 2 to 4. An ideal approach for selective neurectomy of the FCU should start 4 cm above the medial epicondyle, and extend distally to 50% of the length of the forearm or just to the point where the ulnar artery joins the nerve.

Neurectomia digital palmar em equinos / Digital palmar neurectomy in horses / Neurectomia digital palmar en caballos

A neurectomia digital palmar é utilizada em animais que apresentam dor devido às doenças degenerativas podais que não respondem ao tratamento conservativo. Diversas técnicas de neurectomia foram desenvolvidas com objetivo de obter menor trauma cirúrgico, evitando o desenvolvimento de neuroma doloroso,considerado uma das principais complicações da secção nervosa. Para os animais atletas registrado sem associações de criadores, a neurectomia é considerada doping por não tratar a doença de base da claudicação,impedindo-o de participar de eventos esportivos. A presente revisão bibliográfica abrange estudos das diferentes técnicas de neurectomia, avaliando suas indicações, vantagens e desvantagens. As técnicas relatadas apresentam diferentes resultados quando comparadas em relação ao tempo e taxa de formação do neuroma, podendo este ser doloroso ou não.(AU)

Palmar digital neurectomy is utilized in horses suffering from degenerative and painful conditionslocalized in the foot, unresponsive to medical and conservative forms of therapy. Different techniques of palmar digital neurectomy were developed in order to minimize surgical trauma and avoid the most commoncomplication associated with nerve transection, that is painful neuroma. Neurectomy is considered doping inanimais registered in breeders' associations, once it does not represent a treatment for the underlying condition,and horses that have had surgery are not allowed to compete. This literature review describes different neurectomy techniques, evaluating their indications, advantages and complications. Presented techniques vary in results when rate and time to neuroma formation are considered, be it painful or not.(AU)

La neurectomía digital palmar se utiliza en animales que presentam dolor decorri ente de enfermidades degenerativas de los pies que no responden ai tratamiento conservador. Varias técnicas de neurectomía han sido desarrolladas con el fin de obtener un menor trauma quirúrgico, evitando el desarrollo de neuromadoloroso, considerado una complicación importante de Ia sección dei nervio. Para los animales atletas inscritos en asociaciones de creadores, Ia neurectomía se considera dopaje por no tratar Ia enfermedad subyacente de Ia claudicación, que le impide de participar de los eventos deportivos. Esta revisión de Ialiteratura incluye estudios de diferentes técnicas de neurectomía, Ia evaluación de sus indicaciones, ventajasy desventajas. Las técnicas han reportado diferentes resultados cuando se compara con el tiempo y Ia velocidadde formación dei neuroma, que puede ser doloroso o no.(AU)

Neurectomia digital palmar em equinos / Digital palmar neurectomy in horses / Neurectomia digital palmar en caballos

A neurectomia digital palmar é utilizada em animais que apresentam dor devido às doenças degenerativas podais que não respondem ao tratamento conservativo. Diversas técnicas de neurectomia foram desenvolvidas com objetivo de obter menor trauma cirúrgico, evitando o desenvolvimento de neuroma doloroso,considerado uma das principais complicações da secção nervosa. Para os animais atletas registrado sem associações de criadores, a neurectomia é considerada doping por não tratar a doença de base da claudicação,impedindo-o de participar de eventos esportivos. A presente revisão bibliográfica abrange estudos das diferentes técnicas de neurectomia, avaliando suas indicações, vantagens e desvantagens. As técnicas relatadas apresentam diferentes resultados quando comparadas em relação ao tempo e taxa de formação do neuroma, podendo este ser doloroso ou não.

Palmar digital neurectomy is utilized in horses suffering from degenerative and painful conditionslocalized in the foot, unresponsive to medical and conservative forms of therapy. Different techniques of palmar digital neurectomy were developed in order to minimize surgical trauma and avoid the most commoncomplication associated with nerve transection, that is painful neuroma. Neurectomy is considered doping inanimais registered in breeders' associations, once it does not represent a treatment for the underlying condition,and horses that have had surgery are not allowed to compete. This literature review describes different neurectomy techniques, evaluating their indications, advantages and complications. Presented techniques vary in results when rate and time to neuroma formation are considered, be it painful or not.

La neurectomía digital palmar se utiliza en animales que presentam dolor decorri ente de enfermidades degenerativas de los pies que no responden ai tratamiento conservador. Varias técnicas de neurectomía han sido desarrolladas con el fin de obtener un menor trauma quirúrgico, evitando el desarrollo de neuromadoloroso, considerado una complicación importante de Ia sección dei nervio. Para los animales atletas inscritos en asociaciones de creadores, Ia neurectomía se considera dopaje por no tratar Ia enfermedad subyacente de Ia claudicación, que le impide de participar de los eventos deportivos. Esta revisión de Ialiteratura incluye estudios de diferentes técnicas de neurectomía, Ia evaluación de sus indicaciones, ventajasy desventajas. Las técnicas han reportado diferentes resultados cuando se compara con el tiempo y Ia velocidadde formación dei neuroma, que puede ser doloroso o no.

Avaliação macroscópica, microscópica e histomorfométrica do tecido cicatricial pós-cirúrgico de eqüinos submetidos a duas técnicas de neurectomia digital / Macroscopic, microscopic, and histomorphometric evaluation of post-operative scar tissue in horses submitted to two techniques for digital neurectomy

Avaliou-se macro e microscopicamente o tecido cicatricial pós-operatório de eqüinos submetidos a duas técnicas de neurectomia digital: guilhotina (TG) e stripping (TS). Decorridos 14 meses das cirurgias, foram colhidas 32 amostras de tecido cicatricial em quatro éguas, que tiveram os membros submetidos a ambas as técnicas. À macroscopia, verificaram-se as dimensões da cicatriz do coto proximal e a distância entre os cotos proximal e distal. À microscopia, foi quantificada a proporção de tecido nervoso regenerado por meio de histomorfometria. Não houve diferença nas dimensões do tecido cicatricial, contudo a distância entre cotos foi 5,6 vezes maior na TS (P<0,001). Histologicamente, observou-se a presença de tecido conjuntivo frouxo e denso, macrófagos e fibras nervosas delgadas em ambas as técnicas cirúrgicas. Estruturas nodulares, compostas por fascículos nervosos, foram visualizadas em 56,2 por cento (9/16) das amostras colhidas em nervos submetidos à TS. As porcentagens médias de tecido nervoso no tecido cicatricial foram de 0,31 por cento na TG e 2,6 por cento na TS (P<0,001). Concluiu-se que o retorno à sensibilidade nervosa deve demorar mais a ocorrer após a TS, devido à maior distância entre cotos. A maior proporção de tecido nervoso sugere que essa técnica favorece a regeneração nervosa.

The post-operative healed tissues in horses submitted to two digital neurectomy techniques, the guilhotine (GT) and the stripping (ST), were evaluated by macroscopy and microscopy. Fourteen months after surgery, 32 samples of scar tissue were collected from four mares that had the members experimentally submitted to both surgical techniques. By macroscopy, the dimensions of the scar tissue of the proximal stump and the distance between nerve stumps were taken. By microscopy, the proportion of nervous tissues in the scar tissue was quantified by histomorphometry. There were no differences between the scar tissue dimensions, but the distance between stumps was 5.6-fold greater in ST subjects. Histologically, connective tissue, macrophages, and thin nervous fibers were observed in scar tissue present in animals of both groups. Nodular structures composed by nervous fascicules were visualized in 56.2 percent (9/16) of the samples collected from the ST group. The mean percentage of the nervous tissue in scar tissue was 0.31 percent in GT samples and 2.6 percent in ST samples (P<0.001). After ST, a longer time to the return of the sensibility may occur due to the greater distance between stumps. However, greater proportion of nervous tissue in the scar tissue suggests that the use of this technique favors nervous regeneration.