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【Objective】 To analyze the effect of iliac crest on the difficulty of L5-S1 transforaminal puncture and catheterization by using CT images and oblique sagittal reconstruction images. 【Methods】 We made a retrospective analysis of the CT images and oblique sagittal reconstruction images of the adults aged from 30 to 50 years who underwent abdominopelvic CT examination in Affiliated Hospital of Nantong University. Based on the feasibility of puncture and catheterization， all the subjects were divided into two groups： group Ⅰ （suitable for puncture and catheterization） and group Ⅱ （unsuitable for puncture and catheterization）. We compared and analyzed differences in the rostral puncture inclination angle （α）， the abaxial angle of iliac crest （β）， the distance between the highest iliac crests （a）， the distance between sacroiliac joints （b）， the height of the superior articular process of sacral （c）， the height of iliac crest （d）， and the height of the superior articular process of sacral （c’） in the oblique sagittal images between the two groups. We explored the effect of anatomical indexes and iliac crests in oblique sagittal images on puncture and catheterization. 【Results】 The number of high/low iliac crests for group Ⅰ and group Ⅱ was （117/58 vs. 63/0）， and the number of men/women was 64/111 vs. 56/7， respectively. Variables α， b and c were higher in group Ⅰ than in group Ⅱ （34.77±4.86 vs. 31.11±5.16， P<0.001； 137.19±19.24 vs. 128.56±20.73， P = 0.003； 14.34±2.38 vs. 13.02±2.68， P<0.001）， and d was lower than that in group Ⅱ （27.51±6.73 vs. 37.65±6.35， P<0.001）. In addition， no statistically significant difference was found in the height of c of coronal CT scan and c’ of oblique sagittal reconstruction images （13.99±2.53 vs. 13.93±2.40， P = 0.465）. 【Conclusion】 It is more comprehensive and effective to evaluate preoperatively the influence of iliac crest on L5-S1 puncture and catheterization of TF-PELD by using CT scan and CT 3D reconstruction oblique sagittal images. The key factors in the evaluation of iliac crest are the degree of “cohesion” and the height. It is more easily to successfully puncture and catheterize when the shape of iliac crest is wider and lower. Therefore， it has higher probability to successfully puncture and catheterize in women.
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Introducción: La Discectomía Endoscópica Lumbar Percutánea (DELP) es una técnica mínimamente invasiva que se usa en distintos países desde finales de los ochenta para el tratamiento de las Hernias Discales. Objetivo: El propósito del presente artículo es presentar los resultados de la evolución clínica de 110 pacientes operados de distintas hernias discales lumbares por técnica endoscópica percutánea, con seis meses de seguimiento. Asimismo, describir la técnica realizada y los aspectos más relevantes del planning preoperatorio, entre ellos el punto de ingreso percutáneo. Materiales y Métodos: En un grupo de 110 pacientes y 141 discos operados entre abril de 2016 y octubre de 2019, se recogieron datos como la edad, el sexo, la clínica, las imágenes de RMN y el planning del ingreso (Skin Entry Point) con target en el fragmento discal herniado. Se realizó en todos los casos una fragmentectomía dirigida, y luego se complementó con técnica In-Out. Se registró, como dato principal, la diferencia en los puntajes de Oswestry (ODI) pre y postquirúrgico a los 6 meses del procedimiento. También se constató la duración de la operación, el tiempo de hospitalización, y la necesidad de reintervención. Todos los pacientes se operaron despiertos, recibiendo anestesia peridural y sedación. Resultados: Se operaron 110 pacientes y 141 hernias discales. El promedio de reducción en ODI a los 6 meses fue 47,5 puntos (SD=5,7), representando un porcentaje medio de reducción de 85% (SD=9,5). Desde el punto de vista técnico se logró promediar la distancia de línea media al ingreso o Skin Entry Point, según el nivel operado y el abordaje elegido. Conclusión: a la luz de los resultados en nuestra serie de 110 pacientes con hernias discales lumbares, operados despiertos por endoscopía percutánea, se obtuvieron mejorías en el dolor promedio del 85% a seis meses. La técnica endoscópica puede ser considerada como un procedimiento efectivo para pacientes con hernias foraminales, extraforaminales y centrales en los niveles L3L4, L4L5 y L5S1.
Introduction: Introduction: PELD is a minimally invasive technique that has been used in different countries since the late 1980s for the treatment of Herniated Discs. Objective: to describe the surgical method from the Approach point of view and PELD results in a series of 110 patients. Materials and Methods: In a group of 110 patients who together had 141 discs operated on between April 2016 and October 2019, data were collected on patients age and gender, clinical presentation, MRI abnormalities and Skin Entry Point (SEP) with target in the herniated disc fragment. A focused fragmentectomy was performed in all cases, and then it was complemented with an In-Out technique. The main result was the difference in the pre and postoperative Oswestry Disability Index (ODI) scores 6 months after the procedure. The operation duration, the lenght of hospitalization, and the need for reoperation were also recorded. All patients underwent surgery awake, receiving epidural anesthesia and sedation. Results: Respecting the SEP of the endoscope according to the MRI planning focused in the herniated fragment, the evolution of the patients was very favorable. The average reduction in ODI at 6 months was 47.5 points (SD = 5.7), representing an average percentage reduction of 85% (SD = 9.5). The average surgery time was 58 minutes, and the hospitalization time 8.5 hours. Conclusions: In our series of surgical patients with lumbar disc herniations, PELD with focused fragmentectomy in awake patients proved to be a technique with very good results, especially with prior planning of the SEP to achieve effective root decompression
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Humanos , Discectomía , Cirugía General , Endoscopía , Hernia , Desplazamiento del Disco IntervertebralRESUMEN
Objective: To design the surgical strategy of percutaneous full-endoscopic bilateral decompression via unilateral posterior approach for bilateral lumbar spinal stenosis (LSS) and to evaluate the effectiveness. Methods: The percutaneous full-endoscopic bilateral decompression via unilateral posterior approach for bilateral LSS was designed according to the pathological features of LSS. The technique was used to treat 42 patients with LSS between January 2016 and January 2018. There were 18 males and 24 females with an average age of 61.7 years (range, 46-81 years). The duration of symptoms was 1-20 years, with an average of 9.7 years. The surgical segment at L 4, 5 were 27 cases, at L 5, S 1 were 15 cases. The operation time and perioperative complications were recorded. Lumbar X-ray, CT, and MRI examinations were performed at 1 week, 3 months, and 1 year after operation. Visual analogue scale (VAS) score was used to evaluate the low back pain and leg pain, Oswestry disability index (ODI) was used to evaluate the lumbar function, and single continuous walking distance (SCWD) was used to evaluate lower extremity nerve function. The clinical efficacy was evaluated by MacNab criteria at 1 year after operation. Results: All patients underwent surgery successfully. The operation time was 68-141 minutes with an average of 98.2 minutes. All 42 patients were followed up 12-24 months with an average of 18.8 months. There were 2 cases of dural tears during operation, and 1 case of transient dysfunction of the lower limbs of the decompression channel after operation. All of them were cured after corresponding treatment. No serious complications such as death, major bleeding, or irreversible nerve injury occurred during follow-up. No segmental instability was found according to postoperative lumbar hyperextension and flexion X-ray films, and postoperative CT and MRI imaging showed that the stenotic lumbar spinal canal was significantly enlarged, and the compression of the nerve root was sufficient. The VAS score of low back pain and leg pain, ODI score, and SCWD at each time point after operation were significantly improved when compared with those before operation ( P<0.05); the indexes were significantly improved over time after operation, and the differences were significantly ( P<0.05). The clinical efficacy was evaluated by MacNab standard at 1 year after operation, and the results were excellent in 18 cases, good in 20 cases, fair in 3 cases, and poor in 1 case. The excellent and good rate was 90.5%. Conclusion: The percutaneous full-endoscopic bilateral decompression via unilateral posterior approach for LSS is a safe and effective procedure. A well-designed surgical strategy and mastery of its technical points are important guarantees for successful operation and satisfactory results.
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Introducción: La estenosis de canal lumbar (ECL) representa la patología espinal de mayor indicación quirúrgica en la población adulta, resultando en dolor lumbar, así como dolor en miembros inferiores y claudicación de la marcha. La descompresión quirúrgica es el tratamiento de elección cuando el tratamiento conservador ha fallado. Aunque la descompresión tradicional o abierta es un procedimiento efectivo, la descompresión tubular mínimamente invasiva a través de un retractor tubular y microscopio ha demostrado ser una alternativa válida con excelentes resultados. Objetivos: Describir la técnica de descompresión tubular mínimamente invasiva y analizar los resultados clínicos tempranos. Material y Métodos: Treinta y un pacientes con ECL sintomático, sin respuesta al tratamiento conservador, fueron sometidos a descompresión tubular mínimamente invasiva durante el año 2017. Información demográfica e intraoperatoria fue analizada. El resultado clínico fue evaluado usando la escala de Oswestry Disability Index (ODI) y la Escala Visual Analógica (VAS). El seguimiento mínimo fue de 3 meses. Resultados: Treinta y un niveles fueron quirúrgicamente descomprimidos. El tiempo promedio de cirugía fue de 90 minutos. La pérdida de sangre fue de 30 ml promedio. Veintinueve pacientes fueron dados de alta dentro de las 24 hs y 2 dentro de las 48 hs. Se observó una mejora de 22 puntos en el ODI y 5 puntos en el VAS. No se registraron fístulas ni infecciones. Conclusión: La descompresión tubular mínimamente invasiva es una alternativa segura y efectiva para el tratamiento quirúrgico de la ECL con mínima pérdida sanguínea, corta estadía hospitalaria y baja tasa de complicaciones, conservando la estabilidad espinal.
Introduction: Lumbar Spinal Stenosis (LSS) is the most frequently surgically treated spinal in adults, which consists in low back pain, radiculopathy and neurogenic claudication. Surgical decompression is the best choice when medical treatment was not enough. Although traditional or open surgical decompression is effective, minimally invasive decompression through tubular retractors and microscope has demonstrate to be a good choice with excellent results. Aim: To describe minimally invasive tubular decompression surgical technique and analyze early clinical results. Materials and Method: In 31 patients with sintomatic LSS, without response to medical treatment, has been performed minimal invasive tubular decompression during 2017. Demographics and perioperative data has been analyzed. Clinical results were evaluated using Oswestry Disability Index (ODI) and Visual Analogic Scale (VAS). Follow-up was at least three months. Results: Thirty-one levels were surgically decompressed. Mean surgery time was 90 minutes. Blood loss was about 30 ml. nineteen patients were discharged home in less than 24 hours, meanwhile 2 were discharged at 48 hours after surgery. Patients got better in about 22 points in ODI and 5 points in VAS. No cerebrospinal fluid leaks and infections were recorded. Conclusion: Minimal invasive tubular decompression is a safe and effective alternative for surgical treatment of LSS, with a minimum blood loss, short hospital stay, low rate of complications, and preserving spinal stability.
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Humanos , Estenosis Espinal , Dolor de la Región Lumbar , Descompresión Quirúrgica , Extremidad InferiorRESUMEN
Objective To analyze the operation time,radiation exposure time and the screw placement accuracy of a newly-developed guiding chunnel-assisted percutaneous pedicle screw placement technique for thoracolumbar vertebral fractures not accompanied by nerve injury.Methods The clinical data of 35 patients with thoracolumbar vertebral fractures not accompanied by nerve injury,who were treated with newly-developed guiding chunnel-assisted percutaneous pedicle screw placement technique during the period from July 2010 to October 2012,were retrospectively analyzed.A total of 178 procedures of pedicle screw placement were performed in the 35 patients by the one and the same surgeon.The operation time and radiation exposure time of each pedicle screw placement procedure were recorded,and based on the findings of postoperative consecutive two CT scans of the operated vertebrae the screw placement accuracy was graded and evaluated.Results The technical success rate of screw placement was 100％.The mean time used for a single pedicle screw placement was (11.35±2.82) minutes,the average radiation exposure time was (8.06± 2.15) seconds.Screw placement accuracy of grade A was obtained in 156 screws (87.64％),grade B in 20 screws (11.24％),grade C in one screw (0.56％),and grade D in one screw (0.56％).Conclusion The newly-developed guiding chunnel-assisted percutaneous pedicle screw placement technique is very helpful in localizing the puncture point,in improving the screw placement accuracy,and in reducing both operation time and radiation exposure time.
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OBJECTIVE:To provide reference for investigating the nutrition situation of the inpatients in departments of spinal surgery and minimally invasive spinal surgery and promoting the clinical rational use of nutritional support drugs. METHODS:Des-ignated continuous sampling was used to select the inpatients that fit the conditions in the departments of spinal surgery and mini-mally invasive spinal surgery in our hospital from Jan. to Dec. 2013,and the nutritional risk screening 2002 was used to investigate the patients’nutritional risk at admission and upon discharge,the nutritional support during hospitalization were recorded. RE-SULTS:In the 432 enrolled patients,the overall incidence of nutritional risk was 11.57% at admission,12.40% in spinal surgery and 10.44% in minimally invasive spinal surgery;and the overall incidence of nutritional risk was 19.44% upon discharge, 23.60% in spinal surgery,with statistical significance when compared with admission(P0.05). The nutritional support rate of 50 pa-tients with nutritional risk at admission was 88.00%,14.14% of 382 non-risk patients still received a redundant nutritional support. The 44 patients with nutritional risk who received nutritional support had the average calories intake of(9.84±8.10)kJ/(kg·d),in-cluding 10.16% lipids and 9.55% protein;all patients who received nutritional support found no patients with enteral nutrition sup-port. CONCLUSIONS:Inpatients in departments of spinal surgery and minimally invasive spinal surgery suffer a lower incidence of nutritional risk at admission,and a higher incidence of nutritional risk in the former one upon discharge. While some patients who received nutritional support show no indication,and administrations of nutritional support are still debatable,the use of drug is irrational.
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OBJECTIVE: Dural sac cross-sectional area (DSCSA) is a way to measure the degree of central spinal canal compression. The objective was to investigate the correlation between the expansion ratio of DSCSA after unilateral laminotomy for bilateral decompression (ULBD) and the clinical results for lumbar spinal stenosis. METHODS: We retrospectively reviewed the clinical data and radiographs of 103 patients who underwent ULBD for symptomatic spinal stenosis in one year. We compared preoperative and postoperative clinical data and DSCSA and evaluated the correlation between clinical and radiographic measurements. RESULTS: There was a significant increase of DSCSA after ULBD (p=0.000) and mean expansion ratio of DSCSA was 203.7+/-147.2%(range -32.9-826.1%). Clinical outcomes, measured by VAS and ODI were improved significantly not only in early postoperative period, but also in the last follow-up. However, there were no statistically significant correlations between the preoperative DSCSA and clinical symptoms, Perioperative expansion ratio of DSCSA and clinical parameters were also not correlated to the improvement of clinical symptoms significantly in both early postoperative phase and last follow-up. CONCLUSION: Our result indicates that the DSCSA itself has a definite limitation to be correlated to the clinical symptoms, and thus meticulous correlation between the clinical presentation and MRI imaging is essential in determination of surgical treatment.
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Humanos , Descompresión , Estudios de Seguimiento , Laminectomía , Imagen por Resonancia Magnética , Periodo Posoperatorio , Radiculopatía , Estudios Retrospectivos , Canal Medular , Estenosis EspinalRESUMEN
The percutaneous endoscopic lumbar discectomy (PELD) is already being applied to treat almost all types of lumbar disc herniations, ranging from soft contained disc herniation, to migrated disc herniation, and eventually to foraminal and extraforaminal disc herniations. Its concept has already shifted from an indirect central decompression to a direct epidural targeted fragmentectomy with its clinical outcomes comparable to those of conventional open surgery. However, despite the good surgical outcomes reported for this endoscopic procedure for various lumbar spinal pathologies, its procedure still appears to be somewhat complicated for most spine surgeons. This phenomenon might be attributable to the fact that, apart from the technical aspect of the procedure, the surgeons are not familiar with the proper selection of patients. In this article, we have dealt with the basic principle and technique for various surgical conditions. Although these descriptions are totally based on our experiences and therefore have not been statistically analyzed.