Resultados clínicos de la artroplastia unicompartimental de rodilla en un hospital universitario

Se ha realizado un estudio retrospectivo de 25 artroplastias unicompartimentales de rodilla intervenidas de 1989 a 2008, En 15 casos (16 prótesis) se obtuvieron datos completos para su estudio. Once artroplastias se realizaron en mujeres y 5 en hombres con una edad media de 65 años. El tiempo de seguimiento fue de 65 meses (rango 14-202). Analizamos el rango de movilidad, la necesidad de cirugía de revisión y la puntuación en el Knee Society Store. Hubo de casos de infección superficial resueltos favorablemente y ningún caso de infección profunda. La cirugía de revisión fue necesaria en el 37,5% de pacientes en una media de tiempo de 37'5 meses (rango 18-128). Los resultados fueron similares a aquellos que hicieron que se abandonara la técnica en los años 90.Unicompartmental knee arthroplasty appeared at the 70s as an alternative to the proximal tibial osteotomy in young patients with pain and medial or lateral compartment osteoarthritis of the knee. At the 90s this technique began to be abandoned because the clinical results were not the expected. In the last years, lots of articles have been published showing results that can be compared with the total knee arthroplasty thanks to the news designs and the improve of the surgical technique. A retrospective study was made of the 25 unicompartmental knee arthroplasties performed in our hospital, with a mean follow up of 65 months. We analysed the range of mobility, the need of revision surgery and the Knee Society Score, getting similar results to that that made abandon the technique in the 90s

Tratamiento de fracturas de húmero proximal en hueso osteoporótico mediante fijación con sistema de aumentación

Introducción. Para el tratamiento de fracturas de húmero proximal en pacientes osteoporóticos, se han desarrollado fijaciones con aumentación que mejoran la estabilidad del implante. El objetivo de este estudio es analizar los resultados obtenidos con la técnica empleada. Material y métodos. Estudio descriptivo retrospectivo de 7 pacientes con fracturas en 3-4 fragmentos intervenidos mediante placa Philos (Synthes)® de aumentación. Seguimiento medio de 12 meses. Resultados. La puntuación media en la Escala Visual Analógica de dolor fue de 4,4. En la escala Quick Dash de 47,47. En la Escala Constant-Murley de 36,36. La abducción activa media fue de 95º; la flexión anterior media de 105º; la rotación externa media de 44,14º; la rotación interna alcanzó en tres pacientes S1, en dos L5, en uno L2 y en otro T10. En los controles radiográficos se mantuvo la reducción. Nos encontramos con un caso de consolidación parcial. Conclusión. Las técnicas de aumentación disminuyen el riesgo de fallos de fijación manteniendo la reducción.. Introduction. To treat proximal humerus fractures in patients with osteoporosis, the last few years, systems to improve implant stability by augmentation techniques have been developed. The aim of this study is to analyze the results obtained with the surgical technique employed. Materials and methods. Retrospective descriptive study. We selected 7 patients with 3 or 4- part fractures treated operatively with Philos Augmentation plate (Synthes)® fixation technique. Average follow-up was 12 months. Results. Pain measured with a Visual Analogical Scale (VAS) got a average value of 4,4. The mean Quick Dash Score was 47,47. The mean Constat-Murley modified was 36,36. The active articular balances showed a mean abduction of 91º; mean anterior flexion of 105º; mean external rotation of 44,14º; and finally the internal rotation achieved in three patients got to S1, in two patients to L5, in one patient to L2 and in other patient to T10. In X- Ray post-operative controls we can appreciate the reduction maintenance. In one case we observe a partial consolidation of the fracture. Conclusion. Surgical techniques that imply implant augmentation reduces the risk of implant failure and maintains the fracture reduction

Utilización de torta (harina) de algodón en alimentación de cerdos.

Información básica y aplicada sobre este efecto. En la primera parte se discuten aspectos generales sobre el valor nutritivo y análisis químico de los diferentes tipos de torta de algodón disponibles en latinoamérica. En la segunda parte se analizan en forma resumida los resultados de evaluaciones nutritivas durante las distintas fases de producción en cerdos, presentando alternativas con raciones a base de torta de algodón como fuente proteínica para cerdos en crecimiento, acabado, gestación y lactancia. Se concluye que: la torta de algodón es una fuente abundante de proteína vegetal en la mayoría de los países latinoamericanos, siendo gran parte de este subproducto de baja calidad debido a deficiente procesamiento industrial. Para cerdos con menos de 50 kg de peso no debe utilizarse un nivel superior al 10 por ciento de la torta en la ración, cuando se presente más del 0.2 por ciento de gosipol libre y más del 10 por ciento de fibra cruda. Raciones con más del 10 por ciento de torta generalmente producen resultados satisfactorios en cerdos adultos. Para cerdos en cabado se recomienda la adición de sulfato ferroso cuando la concentración de gosipol libre en la ración total sea superior al 0.03 por ciento. La deficiencia de lisina en raciones para cerdos jóvenes se puede subsanar utilizando el aminoácido sintético o productos ricos en lisina. Por medio de un procesamiento adecuado se puede obtener torta de algodón de buena calidad con precios menores entre 20 y 50 por ciento con respecto a otras fuentes proteínicas convencionalesAlgodón-Gossypium herbaceu

Notodo es "cut-out" : reclasificación de las complicaciones mecánicas del tornillo cefálico del clavo intramedular.

The use of the intramedullary nail in extracapsular fractures of the proximal third of the femur is the most frequent stabilization system. In recent years, the biomechanical complications that affect this system have been increasing.A retrospective radiographic study of intertrochanteric fractures was performed followed by an analysis of the biomechanical complications in zone 1 of the cephalic screw. Of the 548 cases, 85 cases (15.5%) of complications were observed, with "back-out" being the most frequent minor complication and "cut-out" the most frequent major complication. 41% of the total fractures correspond to type 31-A2.3 AO / OTA. The basicervical fractures and 31-A2.3 have a high risk of complications.The biomechanical origin that Lenich describes is important to understand as the surgical solution varies depending on whether it is cut-out, cut-in (same origin of the biomechanical failure of the head screw) or cut-through (different origin) to, consequently, resolve them in the right manne

Spatial and temporal variation of fish assemblage associated with aquatic macrophyte patches in the littoral zone of the Ayapel Swamp Complex, Colombia

ABSTRACT: Aim: The purpose of the present study was to examine spatial and temporal variation in fish assemblage structure associated with aquatic macrophytes in the littoral zone of the ASC. Methods: Specimens were caught between January 2008 and February 2009, over four limnimetric moments, using both cast net and seine net. Data on the temperature, electrical conductivity, pH and dissolved oxygen was recorded for the characterization of the water mass in the sites. Results: A total of 34,151 specimens from 44 species were collected. The most abundant species were Eigenmannia virescens, Astyanax caucanus, Astyanax fasciatus, Roeboides dayi and Cyphocharax magdalenae, which together accounted for more than 75% of the sample. Temporal and spatial comparisons showed variation in the environmental conditions and highlighted the existence of heterogeneous abiotic conditions (p0.05) regarding the fish assemblage structure. The multivariate analysis showed no significant relationship between existing environmental conditions and the fish assemblage (p=0.04). The analysis also showed the absence of a relationship between the fish assemblage and environmental variables with respect to the flood pulse and sampling sites (p>0.05). Conclusion: The uniformity of the fish communities that inhabit aquatic macrophyte patches in the littoral region of the ASC may be related to the availability of suitable habitat in structural terms, that probably supports a more abundant and varied wildlife

Effectiveness of an mHealth intervention combining a smartphone app and smart band on body composition in an overweight and obese population: Randomized controlled trial (EVIDENT 3 study)

Background: Mobile health (mHealth) is currently among the supporting elements that may contribute to an improvement in health markers by helping people adopt healthier lifestyles. mHealth interventions have been widely reported to achieve greater weight loss than other approaches, but their effect on body composition remains unclear. Objective: This study aimed to assess the short-term (3 months) effectiveness of a mobile app and a smart band for losing weight and changing body composition in sedentary Spanish adults who are overweight or obese. Methods: A randomized controlled, multicenter clinical trial was conducted involving the participation of 440 subjects from primary care centers, with 231 subjects in the intervention group (IG; counselling with smartphone app and smart band) and 209 in the control group (CG; counselling only). Both groups were counselled about healthy diet and physical activity. For the 3-month intervention period, the IG was trained to use a smartphone app that involved self-monitoring and tailored feedback, as well as a smart band that recorded daily physical activity (Mi Band 2, Xiaomi). Body composition was measured using the InBody 230 bioimpedance device (InBody Co., Ltd), and physical activity was measured using the International Physical Activity Questionnaire. Results: The mHealth intervention produced a greater loss of body weight (–1.97 kg, 95% CI –2.39 to –1.54) relative to standard counselling at 3 months (–1.13 kg, 95% CI –1.56 to –0.69). Comparing groups, the IG achieved a weight loss of 0.84 kg more than the CG at 3 months. The IG showed a decrease in body fat mass (BFM; –1.84 kg, 95% CI –2.48 to –1.20), percentage of body fat (PBF; –1.22%, 95% CI –1.82% to 0.62%), and BMI (–0.77 kg/m2, 95% CI –0.96 to 0.57). No significant changes were observed in any of these parameters in men; among women, there was a significant decrease in BMI in the IG compared with the CG. When subjects were grouped according to baseline BMI, the overweight group experienced a change in BFM of –1.18 kg (95% CI –2.30 to –0.06) and BMI of –0.47 kg/m2 (95% CI –0.80 to –0.13), whereas the obese group only experienced a change in BMI of –0.53 kg/m2 (95% CI –0.86 to –0.19). When the data were analyzed according to physical activity, the moderate-vigorous physical activity group showed significant changes in BFM of –1.03 kg (95% CI –1.74 to –0.33), PBF of –0.76% (95% CI –1.32% to –0.20%), and BMI of –0.5 kg/m2 (95% CI –0.83 to –0.19). Conclusions: The results from this multicenter, randomized controlled clinical trial study show that compared with standard counselling alone, adding a self-reported app and a smart band obtained beneficial results in terms of weight loss and a reduction in BFM and PBF in female subjects with a BMI less than 30 kg/m2 and a moderate-vigorous physical activity level. Nevertheless, further studies are needed to ensure that this profile benefits more than others from this intervention and to investigate modifications of this intervention to achieve a global effect