Tratamiento quirúrgico de las roturas del manguito de los rotadores: estudio retrospectivo de 30 casos

Se presenta un estudio retrospectivo de 30 casos de rotura del manguito de los rotadores tratadas quirúrgicamente. Las décadas más frecuentemente afectadas fueron la 5.a y la 6.a . Veinte casos fueron tratados mediante acromioplastia y reparación abierta, 5 con acromioplastia abierta y los 5 restantes con sutura simple. El tiempo de seguimiento fue de 4 años y 3 meses. Los resultados se valoraron según la escala de Wülker respecto al dolor, la función y la estabilidad. Los mejores resultados se obtuvieron cuando se realizó simultáneamente la acromioplastia y reparación del manguito, en los pacientes con roturas simples, en los de menor edad y cuando se realizó una rehabilitación precoz. En tres casos se pudo comprobar una rotura secundaria.The authors present a retrospective study of 30 patients with tears of the rotator cuff treated surgically. The ages of the patients were distributed mainly among the 5th and 6th decades of life. Twenty cases were treated with anterior acromioplasty and open reparation, 5 of them with open acromioplasty and the othen 5 with single suture. The follow-up time was 4 years and 3 months. The clinical result was graded according to Wülker's scala used in various shoulder conditions (Pain, function and stability). Singles tears in the youngest. In the best results were obtained with acromioplasty and the rotator cuffs reparation simultaneously, together with an early phisical rehabilitation. In 3 cases, a recurrent rotator cuff tear it could be prove

Cifosis postraumática progresiva del raquis cervical en un adolescente

Se presenta un caso de cifosis cervical progresiva en un paciente adolescente de 14 años que fue remitido a nuestra unidad con siete meses de evolución, tras un antecedente de hiperflexión por zambullida. Clínicamente presentaba dolor, actitud antiálgica y limitación de la movilidad. El estudio radiográfico mostró una cifosis cervical C2-C4. Ante la progresión radiográfica de la cifosis (48º) y la limitación funcional, se decidió la estabilización quirúrgica por vía posterior, realizando una artrodesis C2-C4 utilizando el Halifax clamp y aporte de injerto antólogo. Tras dos años de seguimiento, el paciente se encuentra asintomático, con una cifosis residual de 18º (C2-C4), que no limita clínicamente la flexión y extensión completas.A 14-year-old boy with progressive cervical kyphosis is reported. The patient was remitted to our hospital 7 months after a diving accident. Clinically, he showed pain, antialgic position and limited mobility. The radiological study showed cervical kyphosis C2-C4. Due to kyphotic radiographic progression (48º) and functional limitation, surgical stabilization through a posterior approach was decide, performing C2-C4 arthrodesis with Halifax Clamp and bone graft. After two years of follow-up, the patient is asympthomatic with 18º remnant kyphosis that clinically does not limit full flexion and extension

Optimal static and dynamic recycling of defective binary devices

The binary Defect Combination Problem consists in finding a fully working subset from a given ensemble of imperfect binary components. We determine the typical properties of the model using methods of statistical mechanics, in particular, the region in the parameter space where there is almost surely at least one fully-working subset. Dynamic recycling of a flux of imperfect binary components leads to zero wastage.Comment: 14 pages, 15 figure

Espondilolistesis traumática del axis asociada a fractura de odontoides: a propósito de un caso

Se presentan dos casos de espondilolistesis traumática del axis, tipo I de Effendi, asociadas a fractura de odontoides. En ninguno de los casos fue necesario realizar tratamiento quirúrgico, consiguiendo la consolidación de ambas fracturas mediante inmovilización con halo-chaleco.Two new case s of traumatic spondylolisthesis of the axis, Effendi's type I, associated to fracture of the odontoid process are reported. Surgical treatment wa s not necessary in any of the cases. Repair of both fractures wa s adrieved by means of inmovilization with halo-chest orthesis

Enhancement and Edge-Preserving Denoising: An OpenCL-Based Approach for Remote Sensing Imagery

Image enhancement and edge-preserving denoising are relevant steps before classification or other postprocessing techniques for remote sensing images. However, multisensor array systems are able to simultaneously capture several low-resolution images from the same area on different wavelengths, forming a high spatial/spectral resolution image and raising a series of new challenges. In this paper, an open computing language based parallel implementation approach is presented for near real-time enhancement based on Bayesian maximum entropy (BME), as well as an edge-preserving denoising algorithm for remote sensing imagery, which uses the local linear Stein’s unbiased risk estimate (LLSURE). BME was selected for its results on synthetic aperture radar image enhancement, whereas LLSURE has shown better noise removal properties than other commonly used methods. Within this context, image processing methods are algorithmically adapted via parallel computing techniques and efficiently implemented using CPUs and commodity graphics processing units (GPUs). Experimental results demonstrate the reduction of computational load of real-world image processing for near real-time GPU adapted implementation.ITESO, A.C

Testing M2T/T2M Transformations

Presentado en: 16th International Conference on Model Driven Engineering Languages and Systems (MODELS 2013). Del 29 de septiembre al 4 de octubre. Miami, EEUU.Testing model-to-model (M2M) transformations is becoming a prominent topic in the current Model-driven Engineering landscape. Current approaches for transformation testing, however, assume having explicit model representations for the input domain and for the output domain of the transformation. This excludes other important transformation kinds, such as model-to-text (M2T) and text-to-model (T2M) transformations, from being properly tested since adequate model representations are missing either for the input domain or for the output domain. The contribution of this paper to overcome this gap is extending Tracts, a M2M transformation testing approach, for M2T/T2M transformation testing. The main mechanism we employ for reusing Tracts is to represent text within a generic metamodel. By this, we transform the M2T/T2M transformation specification problems into equivalent M2M transformation specification problems. We demonstrate the applicability of the approach by two examples and present how the approach is implemented for the Eclipse Modeling Framework (EMF). Finally, we apply the approach to evaluate code generation capabilities of several existing UML tools.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. Proyecto TIN2011-2379

Von Neumann's expanding model on random graphs

Within the framework of Von Neumann's expanding model, we study the maximum growth rate r achievable by an autocatalytic reaction network in which reactions involve a finite (fixed or fluctuating) number D of reagents. r is calculated numerically using a variant of the Minover algorithm, and analytically via the cavity method for disordered systems. As the ratio between the number of reactions and that of reagents increases the system passes from a contracting (r1). These results extend the scenario derived in the fully connected model (D\to\infinity), with the important difference that, generically, larger growth rates are achievable in the expanding phase for finite D and in more diluted networks. Moreover, the range of attainable values of r shrinks as the connectivity increases.Comment: 20 page

Fractura bilateral de epitroclea: a propósito de 1 caso

Presentamos 1 caso infrecuente de fractura bilateral de epitroclea en un paciente varón de 15 años, tratado mediante osteosíntesis con agujas de Kirschner más transposición anterior de ambos nervios cubitales.We present an unfrequent case of bilateral fracture of the medial epicondyle, in a 15-year-old boy that was treated with Kirschner wires and anterior transposition of the ulnar nerve