Ganglión migratorio tibio-peroneo proximal como causa de parálisis del ciático poplíteo externo

Se present a el caso de un ganglion de la articulación tibio-peronea proximal que se extendió a la musculatura peronea, el nervio peroneo profundo, ligamento lateral externo y menisco externo y ocasionó paresia del ciático poplíteo externo. Tuvo evolución recidivante por lo cual fue intervenido en 4 oportunidades; en la última se realizó una transposición tendinos a por parálisis del nervio peroneo profundo. El paciente evolucionó satisfactoriamente con recuperación de la función y desaparición del dolor. El caso presenta interés ya que ofrece una problemática en cuanto a su origen, presentación clínica, evolución con compromiso neurológico y dificultad en el tratamiento quirúrgico resolutivo.A synovia l cyst attache d t o th e proxima l tibiofibula r join t is described . Th e cyst spreade d int o th e peronea l muscl e group , th e dee p peronea l nerve , th e fibula r collatera l ligamen t an d latera l meniscu s producin g a peronea l nerv e paresis. T h e cyst recurre d an d th e patien t underwen t surger y i n 4 times; i n th e last on e a tendinou s transpositio n wa s performe d t o resolv e a dee p peronea l nerv e paralysis. T h e patien t ha d a goo d evolutio n eit h functio n recover y an d absces e o f pain . Th e cas e illustrate s th e origin , clinica l aspects, evolutio n wit h neuropath y an d difficult sur - gica l resectio n o f this entity

Land quality monitoring systems that integrate local and technical knowledge facilitate adaptation to global change in agricultural landscapes.

IHDP Open Meeting 2009

Radial shortening for the treatment of Kienböck's disease

Twelve patients with Kienbock's disease were treated by radial shortening. Eight patients were in stage II and four in stage III. After an average of 5 years, relief of pain was satisfactory in 10 patients; 8 were in stage II before operation and 2 in stage III. Two patients were dissatisfied because they had persistent pain; both were in stage III before surgery. The range of motion improved moderately. Nonunion at the site of radial osteotomy did not occur. Radiographs at follow up showed consolidation and healing of the lunate in 2 patients, nonprogression of the disease in 9 and increase of the carpal collapse in 1. The procedure helps to prevent further collapse of the lunate especially in stage II and in some patients in stage III

Union after multiple anterior cervical fusion 21 cases followed for 1-6 years

With a mean follow-up of 3 (1-6) years, we report on 21 patients who underwent multiple level cervical fusion, using autologous iliac crest grafts. Dissectomies were performed in 14 patients and corpectomies in another 7. Instrumentation was used in all patients with corpectomies and in 2 patients who underwent 2-level and 3-level dissectomies. Non-union occurred in 1 patient at 1 level. Graft displacement requiring reoperation was observed in 2 patients with massive corpectomies, in 1 of them as a consequence of trauma. In both patients complete bony fusion was obtained after reoperation and no other complications were observed. We conclude that the success rate with multiple-level fusion is comparable to that of single-level fusion when adequate fixation is achieve

11β,13-Dihydro­lactucin-8-O-acetate hemihydrate

The title structure (systematic name: 9-hydroxy­methyl-3,6-di­methyl-3-methyl­ene-2,7-dioxo-3,3a,4,5,9a,9b-hexa­hydro­azu­leno[4,5-b]furan-4-yl acetate hemihydrate), C17H20O6·0.5H2O, from Lactuca floridana, has two independent sesquiterpene lactone mol­ecules in the asymmetric unit. Both have their seven-membered rings in the chair conformation. In the crystal, the OH groups and the water mol­ecule form classical O—H⋯O hydrogen bonds with O⋯O distances in the range 2.6750 (17)–2.8160 (18) Å

Lumbosacral arthrodesis using pedicular screws and ringed rods

Sixty-one patients who had lumbar instability and chronic low back pain or deformity from nontraumatic lumbar pathologies were studied. In all of them a posterior lumbosacral fusion with CUN (Clinic of the University of Navarre) pedicle rod fixation was used. The mean follow-up period was 36 months (range 26-46 months). The consolidation rate was evaluated according to plain and functional radiographs, and a clinical evaluation was made using an analogue pain scale. The rate of fusion was 93.5%. Neurological complications occurred in 3.3%. The incidence of screw failure was 2.3% of all the screws. No other implant failure occurred. The patients rated their clinical results as 'excellent' in 33.8% of the cases, 'good' in 42.2%, 'fair' in 16.9% and 'poor' in 6.7%. CUN instrumentation is a versatile internal fixation system that has been shown to provide satisfactory stability. Furthermore, the clinical results are comparable to those reported in studies in which the most common hardwares were used

Tomato root transcriptome response to a nitrogen-enriched soil patch

Background: Nitrogen (N), the primary limiting factor for plant growth and yield in agriculture, has a patchy distribution in soils due to fertilizer application or decomposing organic matter. Studies in solution culture oversimplify the complex soil environment where microbial competition and spatial and temporal heterogeneity challenge roots\u27 ability to acquire adequate amounts of nutrients required for plant growth. In this study, various ammonium treatments (as 15N) were applied to a discrete volume of soil containing tomato (Solanum lycopersicum) roots to simulate encounters with a localized enriched patch of soil. Transcriptome analysis was used to identify genes differentially expressed in roots 53 hrs after treatment. Results: The ammonium treatments resulted in significantly higher concentrations of both ammonium and nitrate in the patch soil. The plant roots and shoots exhibited increased levels of 15N over time, indicating a sustained response to the enriched environment. Root transcriptome analysis identified 585 genes differentially regulated 53 hrs after the treatments. Nitrogen metabolism and cell growth genes were induced by the high ammonium (65 μg NH4 +-N g-1 soil), while stress response genes were repressed. The complex regulation of specific transporters following the ammonium pulse reflects a simultaneous and synergistic response to rapidly changing concentrations of both forms of inorganic N in the soil patch. Transcriptional analysis of the phosphate transporters demonstrates cross-talk between N and phosphate uptake pathways and suggests that roots increase phosphate uptake via the arbuscular mycorrhizal symbiosis in response to N. Conclusion: This work enhances our understanding of root function by providing a snapshot of the response of the tomato root transcriptome to a pulse of ammonium in a complex soil environment. This response includes an important role for the mycorrhizal symbiosis in the utilization of an N patch. Additional files attached below

Comparison of X-ray dose-response curves obtained by chromosome painting using conventional and PAINT nomenclatures

Altres ajuts: Consejo Español de Seguridad Nuclear (exp. 246/96)Purpose: The compare the suitability of PAINT and conventional nomenclature systems for the construction of chromosome aberration dose- effect curves for X-rays using FISH techniques, and to compare these curves with those based on solid-stained dicentrics analysed in first division metaphases by the FPG technique. Materials and methods: Blood samples were irradiated at 0.1, 0.25, 0.50, 0.75, 1, 1.5, 2, 3, 4 and 5 Gy 180 kV X-rays. FISH painting was performed using probes for chromosomes 1, 4 and 11 in combination with a pan-centromeric probe. Results: Translocations showed a higher background frequency than dicentrics. This influences the ratio of translocations:dicentrics at the lower doses and the uncertainties of dose- effect curves for translocations. The dose-effect curves for dicentrics obtained by FISH and solid stain were in close agreement. Conclusion: For short-term biological dosimetry purposes by FISH, the use of dic(BA) (PAINT nomenclature) or total dicentrics (conventional nomenclature) should give similar dose estimates. For dose reconstruction, the use of total or complete translocations result in similar uncertainties

Eosinophilic Granuloma of the Spine With and Without Vertebra Plana: Long-term Follow-up of Six Cases (Cast Reports)

Vertebral eosinophilic granuloma is a rare condition frequently associated with vertebra plana. In this paper we present six patients with eosinophilic granuloma of the spine; three were without vertebra plana, which represents a diagnostic problem. The mean follow-up was 9 years, (range 2 to 23) and the mean age was 10.8 years at diagnosis. All complained of pain with no neurological deficit. The lesions were located on the vertebral bodies of C4, T9, T10, L1, L2, and L5, respectively. Histologic confirmation of diagnosis was obtained in all patients, two by puncture and four by open biopsy. The patients with vertebra plana (T10, L1, and L5, respectively) were treated conservatively. Long-term follow-up demonstrated total healing of the vertebral body in two and partial rebuilding 8 years after diagnosis in one. Patients without vertebra plana (C4, T9, and L2, respectively) underwent curettage and bone grafting. In the patient with T9 location, a T8-10 anterior arthrodesis with autogenous rib graft was performed. The outcome was satisfactory in all

Las prácticas discursivas en el aula : hacia una comprensión de la ideología y las expresiones de poder del docente de Física

Las condiciones y funciones de las ideologías en el aula no sólo son cognitivas sino también sociales, políticas, culturales e históricas. Sin lugar a dudas, las ideologías se forman, cambian y se reproducen en el discurso y la comunicación socialmente situados (Van Dijk: 2000). En la investigación que originó el presente artículo, se estudian desde una perspectiva fenomenológica y etnográfica, las ideologías de los profesores de física de noveno grado en dos secciones de una institución educativa pública, las cuales se pueden traducir en una visión del mundo, acontecimientos y comportamientos relativos, parciales, incompletas y que por tanto requieren de reelaboraciones continuas para evitar caer en los absolutismos que no permitan la reflexión y al contrario favorezcan la dominación