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Skeletal lesions caused by multiple myeloma often lead to pain, pathological fractures, spinal instability, and compression of the spinal cord and nerve roots. The choice of therapy options is made by an interdisciplinary basis with oncologists and radiotherapists on the basis of comorbidities, prognosis, localization, and number of lesions. Surgical management has a supportive role in pain relief, the prevention and treatment of pathological fractures, and the decompression of the spinal cord and nerve roots. An adequate preoperative workup is essential for planning surgical treatment, which includes magnetic resonance imaging of the spine. In the case of unstable spinal lesions, minimally invasive and open surgical procedures, as well as their combination, are available for stabilization and decompression. In impending and pathological fractures of the extremities, surgical procedures are superior to conservative therapy for pain relief, restoring stability, walking ability, and limb function. There are multiple options available, including osteosynthesis using bone cement and plates, intramedullary nails, and bone replacement with implants and tumor endoprostheses with good functional results. Permanent reconstruction of the lesions should be the goal of any surgical intervention. The indication for curative, wide resection of the tumor should be considered for solitary plasmocytomas of the bone. Adjuvant radiotherapy leads to significantly improved local tumor control and should be considered after resection and stabilization.
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Neoplasias Óseas/complicaciones , Neoplasias Óseas/cirugía , Descompresión Quirúrgica/métodos , Mieloma Múltiple/terapia , Radioterapia Adyuvante , Neoplasias de la Columna Vertebral/cirugía , Neoplasias Óseas/diagnóstico , Humanos , Imagen por Resonancia Magnética , Mieloma Múltiple/diagnóstico , Metástasis de la Neoplasia , Plasmacitoma/diagnóstico , Plasmacitoma/cirugía , Neoplasias de la Columna Vertebral/diagnóstico por imagenRESUMEN
INTRODUCTION: Due to spinal instability and compressive neurologic deficits surgical management is sometimes necessary in patients with metastatic spinal lesions. However, in some cases open surgery is not possible and minimally invasive procedures, like cryoablation, are needed. The aim of the current study was to investigate whether a miniature cryoprobe provides adequate tissue cooling in vertebrae and to evaluate the direct impact of cryosurgery on vertebral body stability. MATERIALS AND METHODS: Twelve thoracic vertebral bodies were harvested from fresh cadavers. After documenting bone density cryoablation was performed in six vertebral bodies according to a standardized procedure. Afterwards temperature inside the vertebral body and maximum breaking force were measured in the control and experimental groups. RESULTS: Required temperature of -50° was reached in all areas. There was a significant correlation between maximum breaking force and measured bone density (p= 0.001). Mean breaking force within the experimental group was 5047 N (SD = 2955 N) compared to 4458 N (SD = 2554 N) in the control group. There were no observable differences in maximum breaking force between both groups. CONCLUSION: Miniature cryoprobe can deliver adequate tissue cooling to -50°C in vertebral bodies. The procedure does not seem to influence breaking force of the treated bones in-vitro. Therefore, using miniature probes cryosurgery may provide a valuable alternative to conventional surgical resection of neoplastic diseases as well as of benign locally aggressive bone tumors.
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Criocirugía/instrumentación , Fracturas Óseas/etiología , Técnicas In Vitro , Vértebras Lumbares/fisiopatología , Vértebras Lumbares/cirugía , Neoplasias de la Médula Espinal/cirugía , Cadáver , Femenino , Humanos , Masculino , Periodo Posoperatorio , Medición de RiesgoRESUMEN
INTRODUCTION: Pedicle screw fixation is the standard technique for the stabilization of the spine, a clinically relevant complication of which is screw loosening. This retrospective study investigates whether preoperative CT scanning can offer a predictor of screw loosening. METHODS: CT-scan attenuation in 365 patients was evaluated to determine the mean bone density of each vertebral body. Screw loosening or dislocation was determined in CT scans postoperatively using the standard radiological criteria. RESULTS: Forty-five of 365 patients (12.3 %; 24 male, 21 female) suffered postoperative screw loosening (62 of 2038 screws) over a mean follow-up time of 50.8 months. Revision surgeries were necessary in 23 patients (6.3 %). The correlation between decreasing mean CT attenuation in Hounsfield Units (HU) and increasing patient age was significant (p < 0.001). Mean bone density was 116.3 (SD 53.5) HU in cases with screw loosening and 132.7 (SD 41.3) HU in cases in which screws remained fixed. The difference was statistically significant (p = 0.003). CONCLUSION: The determination of bone density with preoperative CT scanning can predict the risk of screw loosening and inform the decision to use cement augmentation to reduce the incidence of screw loosening.
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Densidad Ósea , Vértebras Lumbares/diagnóstico por imagen , Tornillos Pediculares/efectos adversos , Cuidados Preoperatorios , Fusión Vertebral , Vértebras Torácicas/diagnóstico por imagen , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Femenino , Humanos , Vértebras Lumbares/cirugía , Masculino , Persona de Mediana Edad , Falla de Prótesis , Estudios Retrospectivos , Medición de Riesgo , Vértebras Torácicas/cirugía , Tomografía Computarizada por Rayos X , Adulto JovenRESUMEN
Boxing remains a subject of controversy and is often classified as dangerous. But the discussion is based mostly on retrospective studies. This survey was conducted as a prospective study. From October 2012 to September 2013, 44 competitive boxers were asked to report their injuries once a month. The questionnaire collected general information (training, competition) and recorded the number of bouts fought, injuries and resulting lost days. A total of 192 injuries were recorded, 133 of which resulted in interruption of training or competition. Each boxer sustained 3 injuries per year on average. The injury rate was 12.8 injuries per 1 000 h of training. Boxers fighting more than 3 bouts per year sustain more injuries (p=0.0075). The injury rate does is not a function of age (age≤19 vs. > 19a, p=0.53). Injuries to the head and the upper limbs occur most frequently. The most common injuries are soft tissue lacerations and contusions. Head injuries with neurological symptoms rarely occur (4.2%). Boxing has a high injury rate that is comparable with other contact sports, but most injuries are minor. Injury frequency is not a function of whether the boxer competes in the junior or adult category. Athletes fighting many bouts per year have a greater risk of injury.
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Boxeo/lesiones , Conducta Competitiva , Adolescente , Adulto , Traumatismos de la Espalda/epidemiología , Niño , Contusiones/epidemiología , Traumatismos Craneocerebrales/epidemiología , Humanos , Laceraciones/epidemiología , Extremidad Inferior/lesiones , Masculino , Estudios Prospectivos , Factores de Riesgo , Traumatismos Torácicos/epidemiología , Extremidad Superior/lesiones , Adulto JovenRESUMEN
Background Context. Percutaneous balloon kyphoplasty is an established minimally invasive technique to treat painful vertebral compression fractures, especially in the context of osteoporosis with a minor complication rate. Purpose. To describe the heparin anticoagulation treatment of paraplegia following balloon kyphoplasty. Study Design. We report the first case of an anterior spinal artery syndrome with a postoperative reversible paraplegia following a minimally invasive spine surgery (balloon kyphoplasty) without cement leakage. Methods. A 75-year-old female patient underwent balloon kyphoplasty for a fresh fracture of the first vertebra. Results. Postoperatively, the patient developed an acute anterior spinal artery syndrome with motor paraplegia of the lower extremities as well as loss of pain and temperature sensation with retained proprioception and vibratory sensation. Complete recovery occurred six hours after bolus therapy with 15.000 IU low-molecular heparin. Conclusion. Spine surgeons should consider vascular complications in patients with incomplete spinal cord syndromes after balloon kyphoplasty, not only after more invasive spine surgery. High-dose low-molecular heparin might help to reperfuse the Adamkiewicz artery.
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Competitive bodybuilding is a weightlifting sport similar to powerlifting, strongman competition and Olympic weightlifting, which aims to increase muscle mass, symmetry, and body definition. Although data regarding rates of injury, overuse syndromes and pain during routine training is available for these other disciplines, it is rare for competitive bodybuilding. The aim of this study was to investigate rates of injury, pain during workouts and/or overuse syndromes, as well as the influence of particular intrinsic and external factors. Data was collected using questionnaires from 71 competitive and elite bodybuilders. The information included training routines and prior injuries. Participants were recruited from bodybuilding clubs in Germany. 45.1% of athletes reported symptoms while training. The overall injury rate was computed to be 0.12 injuries per bodybuilder per year (0.24 injuries per 1 000 h of bodybuilding). Athletes over 40 exhibited higher rates of injury (p=0.029). Other investigated parameters showed no effects. Most injuries occurred in the shoulder, elbow, lumbar spine and knee regions. A large proportion of bodybuilders complained of pain not resulting in interruptions of training/competition. The injury rate is low compared to other weightlifting disciplines such as powerlifting, Olympic weightlifting or strongman competition. In comparison to team or contact sports the injury rate is minimal.
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Trastornos de Traumas Acumulados/epidemiología , Levantamiento de Peso/lesiones , Adolescente , Adulto , Conducta Competitiva/fisiología , Femenino , Alemania/epidemiología , Humanos , Extremidad Inferior/lesiones , Masculino , Persona de Mediana Edad , Dolor/epidemiología , Entrenamiento de Fuerza/efectos adversos , Estudios Retrospectivos , Traumatismos Vertebrales/epidemiología , Extremidad Superior/lesiones , Adulto JovenRESUMEN
BACKGROUND: Adult central movement disorders, malpostures, and scolioses can have their cause in various neurological underlying diseases such as Morbus Parkinson, Pisa syndrome, or segmental dystonia. Important clinical characteristics are marked postural distortions such as camptocormia (bent spine) or laterocollis. In cases of these adult scolioses, surgical spine treatment puts high demands on the surgeon. Surgery in Parkinson's disease, for example, is associated with serious surgery-specific as well as general complications. The more rarely occurring Pisa syndrome is an entity primarily requiring medical therapy. PATIENTS AND METHODS: A series of ten case reports of patients with Morbus Parkinson and Pisa syndrome who underwent spinal surgery is presented and discussed. From these reports, treatment recommendations have been derived and complemented by references from the literature. An extensive MEDLINE search was performed for this purpose. RESULTS AND CONCLUSION: In patients suffering from Parkinson's disease, even minor surgical interventions can lead to instability of whole spine segments or even the entire spine. Implant loosening, adjacent segment instability, general perioperative complications, and progressive malposture due to disease progress can bring forth disastrous treatment courses. Spinal fixation should be performed long-segmented in combination with ventral stabilisation. Due to osteoporosis, pedicle screw cement augmentation is recommended in this collective. If the diagnosis of Pisa syndrome is established, an optimised preoperative preparation should be initiated in close cooperation with neurologists. In many cases medical therapy is sufficient and surgical interventions can be avoided.
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Distonía/complicaciones , Enfermedad de Parkinson/complicaciones , Procedimientos de Cirugía Plástica/efectos adversos , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/prevención & control , Escoliosis/cirugía , Fusión Vertebral/efectos adversos , Anciano , Anciano de 80 o más Años , Distonía/diagnóstico , Femenino , Humanos , Inestabilidad de la Articulación/etiología , Inestabilidad de la Articulación/prevención & control , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/diagnóstico , Procedimientos de Cirugía Plástica/métodos , Escoliosis/complicaciones , Escoliosis/diagnóstico , Enfermedades de la Columna Vertebral/etiología , Enfermedades de la Columna Vertebral/prevención & control , Fusión Vertebral/métodos , SíndromeRESUMEN
BACKGROUND: Conduction of and participation in clinical trials is a major challenge for surgical departments especially as job performance in hospitals has increased immensely during the last few years due to economic aspects. Only 11.7 % of published clinical studies are randomized controlled trials. As more and more treatment procedures in medicine have an evidence-based design the aim must be to present randomized controlled trials with an evidence level 1 for an increasing number of surgical therapies. Since 2006 the German National Surgical Trial Network (CHIR-Net) has been established and funded by the Federal Ministry of Education and Research (BMBF) in order to promote the realization of clinical trials in surgery. Thus the basis for the execution of high quality clinical studies in surgery has been extended further. In the individual CHIR-Net centers clinical trials are planned, organized and supervised which requires extensive knowledge of prevalent international standards. Teaching them to rotating physicians is one of the tasks of CHIR-Net. Therefore, a special curriculum for physicians has been developed which is evaluated in this study. MATERIALS AND METHODS: From December 2010 to March 2011 an online survey of physicians who had previously rotated in the CHIR-Net was conducted, starting from the Surgical Regional Center (CRZ) Witten-Herdecke/Cologne. A total of 19 partly open and partly closed questions concerning the person, training, duration of the rotation, the funding applied for and the generated scientific output were surveyed. In addition, the curriculum for physicians and rotation time was checked by means of 17 questions in an evaluation matrix. RESULTS: In this article the results of the rotating physician evaluation are presented. The satisfaction of physicians with the training during the rotation is presented as well as an analysis of how many of the submitted publications were directly supported by CHIR-Net. It was also evaluated how many rotating physicians requested funding and what the type of funding was. CONCLUSION: With the rotating physician model of CHIR-Net a working concept for the training of surgeons in clinical research and the realization of randomized surgical trials was established as a viable solution for the difficult situation of clinical research in the surgical disciplines with the double burden of research and clinical practice.
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Investigación Biomédica/educación , Conducta Cooperativa , Comunicación Interdisciplinaria , Internado y Residencia , Ensayos Clínicos Controlados Aleatorios como Asunto , Especialidades Quirúrgicas/educación , Curriculum , Medicina Basada en la Evidencia , Alemania , Encuestas de Atención de la Salud , Humanos , Servicio de Cirugía en Hospital , Apoyo a la Formación ProfesionalRESUMEN
BACKGROUND: Percutaneous cement augmentation systems have been proven to be an effective treatment for vertebral compression fractures in the last 10 years. A special form available since 2009 is the radiofrequency kyphoplasty (RF) in which the applied energy raises the viscosity of the cement. The aim of this study is to find out if a smaller cement amount in radiofrequency kyphoplasty can also restore vertebral body height in osteoporotic vertebral compression fractures. METHODS: The treatment was minimally invasive using the StabiliT® vertebral augmentation system by DFine. In a retrospective study from 2011 to January 2012, 35 patients underwent RF kyphoplasty for 49 fresh osteoporotic vertebral compression fractures. From the clinical side the parameters, demographics and pain relief using a visual analogue scale (VAS: 0 to 100 mm) were collected. For the radiological outcome the vertebral body height (anterior, mean and posterior vertebral body height with kyphosis angle) after surgery and after three months was measured and compared to the cement volume. RESULTS: All patients still had permanent pain on the fractured level after conservative treatment. The time from initial painful fracture to treatment was 3.0 weeks ± 1.3. Average visual analogue scale results decreased significantly from 71 ± 9.2 preoperatively to 35 ± 6.2 postoperatively (p < 0.001) and to 30 ± 5.7 (p < 0.001) after three months. With a mean cement volume in the thoracic spine of 2.9 ± 0.7 ml (1.8-4.1) and lumbar spine of 3.0 ± 0.7 ml (2.0-5.0) we had a significant vertebral body height restoration. Anterior and mean vertebral body heights significantly increased by an average of 2.3 and 3.1 mm, kyphosis angle significantly decreased with an average of 2.1° at three-month follow-up (p < 0.05). In two vertebrae (4.1 %) a minimal asymptomatic cement leakage occurred into the upper disc. In two patients (5.7 %) we had new fractures in the directly adjacent segment that were also successfully treated with radiofrequency kyphoplasty. CONCLUSION: With a mean cement volume of 3.0 ml radiofrequency kyphoplasty achieves rapid and short-term improvements of clinical symptoms with a significant restoration of vertebral body height. There was no correlation between restoration of vertebral body height and pain relief. With a cement leakage of 4.1 % RF kyphoplasty is a safe and effective minimally invasive percutaneous cement augmentation procedure. Our data confirm the higher safety described in literature for kyphoplasty in contrast to vertebroplasty.
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Estatura , Cementos para Huesos/efectos de la radiación , Cementos para Huesos/uso terapéutico , Fracturas por Compresión/terapia , Cifoplastia/métodos , Fracturas de la Columna Vertebral/terapia , Anciano , Anciano de 80 o más Años , Femenino , Fracturas por Compresión/diagnóstico , Dureza/efectos de la radiación , Humanos , Masculino , Persona de Mediana Edad , Ondas de Radio , Fracturas de la Columna Vertebral/diagnóstico , Resultado del TratamientoRESUMEN
A 71-year-old female patient received a prothesis due to a cervical disc prolapsed and bleeding into the collar soft tissues occurred postoperatively. Following a computed tomography examination severe peracute respiratory decompensation occurred while administering topical anesthesia to the pharynx in order to perform fiber optic intubation. Endotracheal intubation using conventional laryngoscopy was unsuccessful and the patient required immediate cricothyroidotomy. As an on-site cricothyrotomy set to establish a secure airway was not available the decision was taken to perform surgical cricothyroidotomy. As a conclusion to this life-threatening event in the case of symptoms, such as dyspnea, dysphonia and dysphagia after operations of the cervical spine the airway has to be secured early and according to the local algorithm.
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Manejo de la Vía Aérea/métodos , Vértebras Cervicales/cirugía , Complicaciones Posoperatorias/terapia , Insuficiencia Respiratoria/etiología , Columna Vertebral/cirugía , Anciano , Obstrucción de las Vías Aéreas , Algoritmos , Anestésicos Locales/efectos adversos , Cartílago Cricoides/cirugía , Femenino , Humanos , Desplazamiento del Disco Intervertebral/cirugía , Intubación Intratraqueal , Laringoscopía , Fibras Ópticas , Complicaciones Posoperatorias/fisiopatología , Insuficiencia Respiratoria/diagnóstico , Tomografía Computarizada por Rayos XRESUMEN
Lumbar intervertebral total disc replacement is becoming more commonly employed for patients with degenerative disc disease as an alternative to spinal arthrodesis. Postulated advantages for the patients are motion preservation and height restoration in the affected segment, preventing adjacent level degeneration. Although studies show short and mid-term results which are comparable to spinal fusion, to date the long-term outcome is not clear. The different types of artificial discs and the current status of lumbar disc replacement are described.
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Discectomía/instrumentación , Discectomía/tendencias , Desplazamiento del Disco Intervertebral/cirugía , Vértebras Lumbares/cirugía , Prótesis e Implantes/tendencias , Implantación de Prótesis/tendencias , HumanosRESUMEN
Vertebroplasty (VP) and kyphoplasty (KP) are minimally invasive vertebral augmentation procedures for the treatment of fresh vertebral compression fractures (VCFs) associated with osteoporosis, trauma, malignant conditions, hemangiomas, and osteonecrosis. During these procedures, bone cement (e.g., polymethylmethacrylate) is percutaneously injected into the vertebral body. Systematic reviews of both procedures have shown significantly improved back pain and quality of life compared to conservative therapy. Direct comparison between VP and KP is not possible because of the lack of prospective randomized data comparing the two procedures. Both appear to improve patient functional status in most studies, although it is difficult to pool the available data because of differing measurement scales. With increasing popularity of both techniques, particularly over the past ten years, a rising number of publications have detailed potential complications secondary to cement extravasation, from compression of neural elements to venous embolism. Overall complication rates for both procedures are low. Systematic reviews have found significantly higher rates of cement leakage after VP (40%) versus KP (8%), with 3% of VP leaks being symptomatic. The evidence for increased risk of adjacent level fracture after these procedures compared to conservative treatment is inconclusive. When performed by a well-trained practitioner in appropriately selected patients, vertebroplasty and kyphoplasty are both safe and effective treatments for fresh vertebral compression fractures. Results from ongoing randomized controlled trials will provide further detailed information about both procedures in the future.
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Fracturas por Compresión/cirugía , Fracturas Espontáneas/cirugía , Cifoplastia , Fracturas de la Columna Vertebral/cirugía , Vertebroplastia , Cementos para Huesos/uso terapéutico , Medicina Basada en la Evidencia , Humanos , Cifoplastia/métodos , Procedimientos Quirúrgicos Mínimamente Invasivos , Polimetil Metacrilato/administración & dosificación , Factores de Riesgo , Resultado del Tratamiento , Vertebroplastia/métodosRESUMEN
HISTORY AND ADMISSION FINDINGS: A 21-year-old man presented with severe lumbar back pain and progressive paraparesis with clinical signs of spondylitis. Laboratory findings revealed elevated infectious parameters. Because of a positive Mantoux-Test he had been treated with quadruple tuberculostatic drugs for eight weeks without prior identification of the causative pathogen. INVESTIGATIONS: Magnetic resonance imaging of the spine revealed a multisegmental spondylitis of the lumbar vertebrae (L3 - L5) with epidural empyema. Computed tomography (CT) of the abdomen confirmed large bilateral abscesses in the psoas muscles. TREATMENT AND COURSE: The findings supported the diagnosis of spondylitis. The antibiotic regimen was continued. CT-guided drainage was placed in both psoas muscles. Laminectoma of L3 - 5 and dorsal spondylodesis of L2 - S1 were performed immediately. Mycobacterium tuberculosis was cultured from the intraoperative biopsies and treated according to the drug sensitivity test. After further surgical debridment and corporectomy of L4 and L5 the infection was successfully treated. Ten weeks after admission the patient was transferred to a neurologic rehabilitation unit for mobilization. CONCLUSION: Spondylodiscitis treatment is complex and requires a multidisciplinary approach.
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Discitis/diagnóstico , Emigrantes e Inmigrantes , Empiema/diagnóstico , Vértebras Lumbares , Imagen por Resonancia Magnética , Grupo de Atención al Paciente , Espondilitis/diagnóstico , Tomografía Computarizada por Rayos X , Tuberculosis de la Columna Vertebral/diagnóstico , Antituberculosos/uso terapéutico , Terapia Combinada , Desbridamiento , Diagnóstico Diferencial , Discitis/cirugía , Drenaje , Empiema/cirugía , Humanos , Laminectomía , Vértebras Lumbares/patología , Masculino , Absceso del Psoas/diagnóstico , Absceso del Psoas/cirugía , Fusión Vertebral , Espondilitis/cirugía , Tuberculosis de la Columna Vertebral/cirugía , Adulto JovenRESUMEN
AIM: The clinical trial is the link between research and medical practice and facilitates evidence-based therapies. There are specific difficulties to be faced when executing clinical trials related to surgical services (learning curve of the surgeon, blinding etc.). As a result, surgical randomised controlled clinical trials (RCT) are underrepresented in the total number of RCTs. METHOD: To make it easier to implement surgical RCT, the Clinical Trial Unit for Orthopaedics and Trauma Surgery was established. Training of the supporting physicians was reached by rotations in the structures of CHIR-Net, a BMBF-funded network created to build up a region-wide surgical research infrastructure. RESULT/CONCLUSION: Supported by the regional CHIR-Net Center and the regional Clinical Trial Center, a research institute was thus founded with the aim of contributing to a long-term improvement in clinical research in orthopaedics and trauma surgery.
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Academias e Institutos/organización & administración , Investigación Biomédica/organización & administración , Ortopedia/organización & administración , Ensayos Clínicos Controlados Aleatorios como Asunto , Heridas y Lesiones/cirugía , Centros Médicos Académicos , Investigación Biomédica/educación , Curriculum , Aprobación de Recursos , Alemania , Hospitales Universitarios , Humanos , Internado y Residencia , Equipo Ortopédico , Ortopedia/educación , Especialidades QuirúrgicasRESUMEN
STUDY DESIGN: Multicenter retrospective case series. OBJECTIVE: To determine relevant clinical presentation and outcome of human immunodeficiency virus (HIV)-positive patients with spondylodiscitis as a function of the treatment. SUMMARY OF BACKGROUND DATA: This is the first study comparing the clinical outcome of HIV-positive patients with spondylodiscitis as a function of the treatment. METHODS: We performed a national multicenter retrospective case series comparing operatively versus conservatively treated HIV-positive patients with spondylodiscitis presenting between 1991 and 2007. RESULTS: Twenty patients were included in the study. The average age of the patients at the time of admission was 43.0 years. The sex ratio m:w resulted in 2.3:1. On admission, 50% of the patients were in CDC stage C3. The CD4 T-cell count was determined as being 237.5/microL on average. At the occurrence of spondylodiscitis HIV had been known for a mean 8.5 years. In altogether 75% of the cases a pathogen was found. In 3 cases, mixed infections were present. Half of the patients received surgery. In none of these patients a wound infection or a delay of wound healing could be observed. One patient died during in-patient stay. Eleven of the 19 patients could be followed up a mean 13 months after discharge. In the follow-up period further 3 patients died on an average of 45 months after discharge. CONCLUSION: The occurrence of spondylodiscitis in HIV-positive patients is associated with a low CD4 T-cell count. The probability of mixed infections rises with a CD4 T-cell count <100/microL. The occurrence of spondylodiscitis in HIV-positive patients is accompanied by high mortality. Operative therapy of spondylodiscitis in HIV-positive patients is not associated with an increased surgical complication rate. HIV infection or AIDS should not have an influence on decision-making regarding conservative or operative therapy of spondylodiscitis.
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Infecciones Oportunistas Relacionadas con el SIDA/complicaciones , Discitis/terapia , Infecciones por VIH/complicaciones , Infecciones Oportunistas Relacionadas con el SIDA/inmunología , Adulto , Recuento de Linfocito CD4 , Discitis/complicaciones , Discitis/inmunología , Femenino , Estudios de Seguimiento , Infecciones por VIH/inmunología , Hospitalización/estadística & datos numéricos , Humanos , Masculino , Persona de Mediana Edad , Evaluación de Resultado en la Atención de Salud , Cooperación del Paciente/estadística & datos numéricos , Alta del Paciente/estadística & datos numéricos , Complicaciones Posoperatorias , Estudios Retrospectivos , Adulto JovenRESUMEN
INTRODUCTION: CHIR-Net is a German national surgical network for clinical trials. It is supported by the Federal Ministry for Education and Research (BMBF 01GH0605) to establish infrastructure and expertise in the conduct of clinical trials within the surgical disciplines. An important aspect of this network is a qualified advanced training for physicians deployed at the CHIR-Net as part of a job rotation. METHODS: A catalog of activities for the time of rotation within the network has been developed in cooperation with the CHIR-Net, the deployed physicians and cooperating regional clinical trials centers (ZKS/KKS). RESULT: The focal points of the physicians' rotation in the CHIR-Net are outlined in a curriculum that has been established and evaluated in the network since January 2008. CONCLUSION: After the rotation time at the CHIR-Net the skilled physicians act as multipliers of specialized knowledge on clinical research. In this way the acquired expertise will be transferred into clinical practice and treatment of patients within research projects will benefit directly.
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Investigación Biomédica/educación , Instrucción por Computador , Educación Médica Continua , Educación de Postgrado en Medicina , Cirugía General/educación , Internet , Ensayos Clínicos Controlados Aleatorios como Asunto , Curriculum , Medicina Basada en la Evidencia/educación , Alemania , HumanosRESUMEN
INTRODUCTION: Painful fractures of the spine pose a serious clinical problem which gains in importance with the increasing ageing of our population. When conservative treatment of these fractures fails, with vertebroplasty and kyphoplasty we have two percutaneous minimally invasive stabilising procedures at our disposal. PATIENTS AND METHODS: We performed a prospective study of 90 patients with fresh osteoporotic vertebral fractures who had been treated with vertebroplasty or kyphoplasty in our clinic between January 1, 2005, and December 31, 2007. Clinical analysis included Oswestry score and VAS index; the vertebral body height restoration (mean vertebral body height, kyphosis angle, anterior/posterior edge) was evaluated radiologically; furthermore, all occurring complications were recorded. The follow-up time was 1 year, 80 patients could be examined at follow-up; 8 patients had died of a tumour disease, lost to follow-up were 2.2%. RESULTS: Both procedures succeeded in significantly (p<0.001) increasing quality of life (Oswestry score) and reducing pain (VAS). Following vertebroplasty there were two cases of cement leakage into the spinal canal with consecutive paraparesis which disappeared completely after the cement had been surgically removed. Altogether, 11 adjacent level fractures were observed, 4 in the vertebroplasty and 7 in the kyphoplasty group. CONCLUSION: This study compares vertebroplasty and kyphoplasty with regard to their effectiveness, safety, and restoration of vertebral body height, and complications. There were no differences between the groups with regard to quality of life and pain improvement, but the rate of serious complications was higher after vertebroplasty. Mean vertebral body height restoration at 1 year follow-up was significantly higher (p<0.05) in the kyphoplasty group. It remains to be seen in future long-term studies whether or not restoration of vertebral body height has an effect on the clinical result.
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Fracturas por Compresión/cirugía , Fracturas de la Columna Vertebral/cirugía , Columna Vertebral/cirugía , Vertebroplastia/métodos , Anciano , Cementos para Huesos , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Procedimientos Quirúrgicos Mínimamente Invasivos/métodos , Dolor/prevención & control , Estudios Prospectivos , Calidad de Vida , Radiografía , Estudios Retrospectivos , Columna Vertebral/anatomía & histología , Columna Vertebral/diagnóstico por imagen , Resultado del TratamientoRESUMEN
STUDY QUESTION: Pathologic bone fractures in cryosurgery of bone tumors have been described in literature. This study utilizing a sheep model should prove the possible reduction of potential fracture while using a new miniature cryoprobe minimizing tissue damage and providing accurate control of the ablation process. Furthermore, postoperative histological changes should be investigated and the results correlated with the stability trials. METHODS: In 24 sheep, ablation of the femur and the tibial bone on one side was carried out. Ablation of the right femur was limited to an area of 2 cm(2) with single cortical bone, whereas at the left tibia the whole proximal tibial plateau was included. The other side served as a control entity without cryoablation. After a period of 2, 4, and 6 months postoperative investigation of bending resistance of the femoral bone and of compression resistance of the tibial bone as well as histological findings were done in eight animals each. RESULTS: After 2 months there was a significant difference (P < 0.05) regarding compression resistance between the treated and the contralateral tibia, whereas the bending resistance in the treated femur was slightly lower than on the contralateral side. After 4 and 6 months the cryo-treated part showed a tendency towards weakness. Histological findings showed bone necrosis with slight beginning repair after 2 months. Four and six months later, bone necrosis still existed with increasing development of woven bone and conversion into lamellar bone. DISCUSSION: A thorough control of the freezing process and the low iatrogenous weakening of the bone due to placing the probe when modern miniature cryoprobes are used can minimize the risk of pathological postoperative fractures. However, at least 2 months after operation there is histological proof of bone healing with appropriate reduction of bone stability, which should be considered for the clinical application of this new technique.
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Criocirugía/instrumentación , Fémur/cirugía , Osteonecrosis/fisiopatología , Tibia/cirugía , Animales , Fenómenos Biomecánicos , Neoplasias Óseas/patología , Neoplasias Óseas/fisiopatología , Neoplasias Óseas/cirugía , Remodelación Ósea/fisiología , Fémur/patología , Fémur/fisiopatología , Fracturas Espontáneas/patología , Fracturas Espontáneas/fisiopatología , Osteonecrosis/patología , Factores de Riesgo , Ovinos , Resistencia a la Tracción , Tibia/patología , Tibia/fisiopatologíaRESUMEN
The infection with non-tuberculous mycobacterium correlates highly with immunodeficiency. Mycobacterium xenopi (M. xenopi) is most commonly isolated in the respiratory tract, as a cause of endogenous spondylodiscitis it occurs but rarely. Only seven such cases have been reported in literature. In this paper, we present the case of an about 28-year-old HIV-positive patient with a long history of back pain. MRI of the spinal column and Positron Emission Tomography with (18)F-fluorodeoxyglucose as a tracer (F18-FDG-PET) confirmed the suspected spondylodiscitis. After performing a CT-controlled abscess drainage the patient's condition improved. Because of the severe destruction of the spinal segment concerned and because of the epidural abscess formation a vertebrectomy of T10 and surgical debridement of the paravertebral soft tissue via thoracotomy became urgently necessary. The spine was stabilized by interposing a cage and an anterolateral monobar system. M. xenopi could be proven by PCR out of the intraoperative specimen. After operation and antituberculotic therapy there was a fast convalescence. Diagnostics, therapy, and clinical outcome are discussed.