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Background and objectives: Massive rotator cuff tears compromise shoulder mobility function and cannot be directly repaired. Latissimus dorsi tendon transfer (LDTT) is a therapeutic alternative suitable for the treatment of rotator cuff tears that helps to restore external shoulder rotation. Cadaver models have been used for studying the effects of LDTT and procedural variations, but, to the best of our knowledge, none of them have been validated. The aim of our study was to validate a novel cadaver model while verifying the effects of LDTT on external rotation. Materials and Methods: Two groups were included in the study: a cadaver group and a control group made up of healthy volunteers, which were used for the validation of the cadaver model. Baseline external rotation measurements were performed with both groups, after which a massive rotator cuff tear was inflicted and repaired with LDTT in the cadaver group. Their postoperative external rotation was evaluated using three different tests. Results: No statistically significant differences were found between the baseline measurements of the two groups, and postoperative external rotation was significantly higher after LDTT in all cases but one. Conclusions: Cadaver models were validated, since they had a similar preoperative external rotation to healthy volunteers. Moreover, they allowed us to demonstrate the effect of LDTT on external shoulder rotation.
José Silberberg; Alessandro Nilo; Jorge Roces-García. Enhancement of External Rotation after Latissimus Dorsi Tendon Transfer (LDTT): A Cadaveric Study. Medicina 2021, 57, 305 .
AMA StyleJosé Silberberg, Alessandro Nilo, Jorge Roces-García. Enhancement of External Rotation after Latissimus Dorsi Tendon Transfer (LDTT): A Cadaveric Study. Medicina. 2021; 57 (4):305.
Chicago/Turabian StyleJosé Silberberg; Alessandro Nilo; Jorge Roces-García. 2021. "Enhancement of External Rotation after Latissimus Dorsi Tendon Transfer (LDTT): A Cadaveric Study." Medicina 57, no. 4: 305.
Background The objective is to compare, by the means of finite elements analysis, the biomechanical behavior of a conventional stem of proven performance with a short stem based on the same fixation principles. Methods A 3D femur was modeled from CT scan data, and real bone density measures were incorporated into it. Load stresses were applied to that bone in 3 different scenarios: without prosthesis, with the conventional stem, and with the short stem. Different bone loading patterns were compared by Gruen's zones both visually and statistically using Welch's test. Results The implantation of a stem generates a certain degree of stress shielding in the surrounding bone, but the pattern of the change is very similar in the compared stem models. Although there is statistical significance (P < 0.01) in the mean stress variation in most of the Gruen's zones, the magnitude of the difference is always under 2 MPa (range: 0.01 – 1.74 MPa). Conclusions The bone loading patterns of the traditional stem and the short stem are very similar. Although there is no evidence of a link between biomechanics and clinical outcomes, our results may suggest that theoretical advantages of short stems can be exploited without the fear of altering bone loading patterns.
Jesús Gómez-Vallejo; Jorge Roces-García; Jesús Moreta; Daniel Donaire-Hoyas; Óscar Gayoso; Fernando Marqués-López; Jorge Albareda. Biomechanical Behavior of an Hydroxyapatite-Coated Traditional Hip Stem and a Short One of Similar Design: Comparative Study Using Finite Element Analysis. Arthroplasty Today 2021, 7, 167 -176.
AMA StyleJesús Gómez-Vallejo, Jorge Roces-García, Jesús Moreta, Daniel Donaire-Hoyas, Óscar Gayoso, Fernando Marqués-López, Jorge Albareda. Biomechanical Behavior of an Hydroxyapatite-Coated Traditional Hip Stem and a Short One of Similar Design: Comparative Study Using Finite Element Analysis. Arthroplasty Today. 2021; 7 ():167-176.
Chicago/Turabian StyleJesús Gómez-Vallejo; Jorge Roces-García; Jesús Moreta; Daniel Donaire-Hoyas; Óscar Gayoso; Fernando Marqués-López; Jorge Albareda. 2021. "Biomechanical Behavior of an Hydroxyapatite-Coated Traditional Hip Stem and a Short One of Similar Design: Comparative Study Using Finite Element Analysis." Arthroplasty Today 7, no. : 167-176.
Vegetated swales are a popular sustainable drainage system (SuDS) used in a wide range of environments from urban areas and transport infrastructure, to rural environments, sub-urban and natural catchments. Despite the fact that vegetated swales, also known as grassed swales, have received scientific attention over recent years, especially from a hydrological perspective, there is a need for further research in the field, with long-term monitoring. In addition, vegetated swales introduce further difficulties, such as the biological growth occurring in their surface layer, as well as the biological evolution taking place in them. New developments, such as the implementation of thermal devices within the cross-section of green SuDS for energy saving purposes, require a better understanding of the long-term performance of the surface temperature of swales. This research aims to contribute to a better understanding of these knowledge gaps through a descriptive analysis of a vegetated swale in Ryton, Coventry, UK, under a Cfb Köppen climatic classification and a mixed rural and peri-urban scenario. Precipitation and temperature patterns associated with seasonality effects were identified. Furthermore, a level of biological evolution was described due to the lack of periodical and planned maintenance activities, reporting the presence of both plant species and pollinators. Only one event of flooding was identified during the three hydrological years monitored in this research study, showing a robust performance.
Luis A. Sañudo-Fontaneda; Jorge Roces-García; Stephen J. Coupe; Esther Barrios-Crespo; Carlos Rey-Mahía; Felipe P. Álvarez-Rabanal; Craig Lashford. Descriptive Analysis of the Performance of a Vegetated Swale through Long-Term Hydrological Monitoring: A Case Study from Coventry, UK. Water 2020, 12, 2781 .
AMA StyleLuis A. Sañudo-Fontaneda, Jorge Roces-García, Stephen J. Coupe, Esther Barrios-Crespo, Carlos Rey-Mahía, Felipe P. Álvarez-Rabanal, Craig Lashford. Descriptive Analysis of the Performance of a Vegetated Swale through Long-Term Hydrological Monitoring: A Case Study from Coventry, UK. Water. 2020; 12 (10):2781.
Chicago/Turabian StyleLuis A. Sañudo-Fontaneda; Jorge Roces-García; Stephen J. Coupe; Esther Barrios-Crespo; Carlos Rey-Mahía; Felipe P. Álvarez-Rabanal; Craig Lashford. 2020. "Descriptive Analysis of the Performance of a Vegetated Swale through Long-Term Hydrological Monitoring: A Case Study from Coventry, UK." Water 12, no. 10: 2781.
An iterative algorithm is proposed for determining the optimal chassis design of an electric vehicle, given a path and a reference time. The proposed algorithm balances the capacity of the battery pack and the dynamic properties of the chassis, seeking to optimize the tradeoff between the mass of the vehicle, its energy consumption, and the travel time. The design variables of the chassis include geometrical and inertial values, as well as the characteristics of the powertrain. The optimization is constrained by the slopes, curves, grip, and posted speeds of the different sections of the track. Particular service constraints are also considered, such as limiting accelerations due to passenger comfort or cargo safety. This methodology is applicable to any vehicle whose route and travel time are known in advance, such as delivery vehicles, buses, and race cars, and has been validated using telemetry data from an internal combustion rear-wheel drive race car designed for hill climb competitions. The implementation of the proposed methodology allows to reduce the weight of the battery pack by up to 20%, compared to traditional design methods.
Pablo Luque; Daniel A. Mántaras; Álvaro Maradona; Jorge Roces; Luciano Sánchez; Luis Castejón; Hugo Malón. Multi-Objective Evolutionary Design of an Electric Vehicle Chassis. Sensors 2020, 20, 3633 .
AMA StylePablo Luque, Daniel A. Mántaras, Álvaro Maradona, Jorge Roces, Luciano Sánchez, Luis Castejón, Hugo Malón. Multi-Objective Evolutionary Design of an Electric Vehicle Chassis. Sensors. 2020; 20 (13):3633.
Chicago/Turabian StylePablo Luque; Daniel A. Mántaras; Álvaro Maradona; Jorge Roces; Luciano Sánchez; Luis Castejón; Hugo Malón. 2020. "Multi-Objective Evolutionary Design of an Electric Vehicle Chassis." Sensors 20, no. 13: 3633.
Land-use change due to rapid urbanization poses a threat to urban environments, which are in need of multifunctional green solutions to face complex future socio-ecological and climate scenarios. Urban regeneration strategies, bringing green infrastructure, are currently using sustainable urban drainage systems to exploit the provision of ecosystem services and their wider benefits. The link between food, energy and water depicts a technological knowledge gap, represented by previous attempts to investigate the combination between ground source heat pump and permeable pavement systems. This research aims to transfer these concepts into greener sustainable urban drainage systems like wet swales. A 1:2 scaled laboratory models were built and analysed under a range of ground source heat pump temperatures (20–50 °C). Behavioral models of vertical and inlet/outlet temperature difference within the system were developed, achieving high R2, representing the first attempt to describe the thermal performance of wet swales in literature when designed alongside ground source heat pump elements. Statistical analyses showed the impact of ambient temperature and the heating source at different scales in all layers, as well as, the resilience to heating processes, recovering their initial thermal state within 16 h after the heating stage.
Carlos Rey-Mahía; Luis A. Sañudo-Fontaneda; Valerio C. Andrés-Valeri; Felipe Pedro Álvarez-Rabanal; Stephen John Coupe; Jorge Roces-García. Evaluating the Thermal Performance of Wet Swales Housing Ground Source Heat Pump Elements through Laboratory Modelling. Sustainability 2019, 11, 3118 .
AMA StyleCarlos Rey-Mahía, Luis A. Sañudo-Fontaneda, Valerio C. Andrés-Valeri, Felipe Pedro Álvarez-Rabanal, Stephen John Coupe, Jorge Roces-García. Evaluating the Thermal Performance of Wet Swales Housing Ground Source Heat Pump Elements through Laboratory Modelling. Sustainability. 2019; 11 (11):3118.
Chicago/Turabian StyleCarlos Rey-Mahía; Luis A. Sañudo-Fontaneda; Valerio C. Andrés-Valeri; Felipe Pedro Álvarez-Rabanal; Stephen John Coupe; Jorge Roces-García. 2019. "Evaluating the Thermal Performance of Wet Swales Housing Ground Source Heat Pump Elements through Laboratory Modelling." Sustainability 11, no. 11: 3118.
M. González; J. Guirao; C. Vacas; E. Rodríguez; S. Iglesias; V. Udintsev; M. Walsh; J. Fano; J. Ordieres; N. Casal; T. Giacomin; L. García-Ruesgas; J. Roces. Rigid and adjustable fixation of the shielding modules into the ITER port plugs. Fusion Engineering and Design 2017, 123, 793 -796.
AMA StyleM. González, J. Guirao, C. Vacas, E. Rodríguez, S. Iglesias, V. Udintsev, M. Walsh, J. Fano, J. Ordieres, N. Casal, T. Giacomin, L. García-Ruesgas, J. Roces. Rigid and adjustable fixation of the shielding modules into the ITER port plugs. Fusion Engineering and Design. 2017; 123 ():793-796.
Chicago/Turabian StyleM. González; J. Guirao; C. Vacas; E. Rodríguez; S. Iglesias; V. Udintsev; M. Walsh; J. Fano; J. Ordieres; N. Casal; T. Giacomin; L. García-Ruesgas; J. Roces. 2017. "Rigid and adjustable fixation of the shielding modules into the ITER port plugs." Fusion Engineering and Design 123, no. : 793-796.
Julio Guirao; Silvia Iglesias; Christian Vacas; Victor Udintsev; Sunil Pak; Philippe Maquet; Eduardo Rodriguez; Jorge Roces. Fracture mechanics analysis approach to assess structural integrity of the first confinement boundaries in ITER Generic Upper Port Plug structure. Fusion Engineering and Design 2015, 98-99, 1492 -1495.
AMA StyleJulio Guirao, Silvia Iglesias, Christian Vacas, Victor Udintsev, Sunil Pak, Philippe Maquet, Eduardo Rodriguez, Jorge Roces. Fracture mechanics analysis approach to assess structural integrity of the first confinement boundaries in ITER Generic Upper Port Plug structure. Fusion Engineering and Design. 2015; 98-99 ():1492-1495.
Chicago/Turabian StyleJulio Guirao; Silvia Iglesias; Christian Vacas; Victor Udintsev; Sunil Pak; Philippe Maquet; Eduardo Rodriguez; Jorge Roces. 2015. "Fracture mechanics analysis approach to assess structural integrity of the first confinement boundaries in ITER Generic Upper Port Plug structure." Fusion Engineering and Design 98-99, no. : 1492-1495.
Christian Vacas; Eduardo Rodriguez; Julio Guirao; Silvia Iglesias; Victor Udintsev; Sunil Pak; Philippe Maquet; Jorge Roces; Natalia Casal. The choice of dynamic amplification factors for the ITER generic port plugs during disruptions. Fusion Engineering and Design 2015, 98-99, 1652 -1655.
AMA StyleChristian Vacas, Eduardo Rodriguez, Julio Guirao, Silvia Iglesias, Victor Udintsev, Sunil Pak, Philippe Maquet, Jorge Roces, Natalia Casal. The choice of dynamic amplification factors for the ITER generic port plugs during disruptions. Fusion Engineering and Design. 2015; 98-99 ():1652-1655.
Chicago/Turabian StyleChristian Vacas; Eduardo Rodriguez; Julio Guirao; Silvia Iglesias; Victor Udintsev; Sunil Pak; Philippe Maquet; Jorge Roces; Natalia Casal. 2015. "The choice of dynamic amplification factors for the ITER generic port plugs during disruptions." Fusion Engineering and Design 98-99, no. : 1652-1655.
In this research work, a nonlinear structural analysis by the finite element method (FEM) is carried out to study the structural collapse of a self-weighted metallic roof with and without skylights located in Cabañaquinta’s schoolyard (Principality of Asturias, Northern Spain). The collapse of this cable-arch structure was due to huge snow loads in winters of 2004 and 2006. In order to tackle this structural problem, it is proposed a damage assessment based on the nonlinear post-buckling analysis of the entire self-weighted metallic roof by FEM. Firstly, in order to obtain a diagnosis of the failure causes, several FEM models with six tiles of a 0.83 m wide and 1.25 mm thickness, including methacrylate skylights in one of them, were built and then solved as a three steps procedure: a linear pre-stress analysis, a buckling analysis and a nonlinear analysis. Secondly, a procedure based on the design of experiments (DOEs) applying the FEM technique was used to determine the importance of different parameters on the structural integrity of the roof. Finally, the numerical results of this work are discussed and the structural design recommendations are explained in detail to avoid these structural failures in the future.
J.J. Del Coz Díaz; F.P. Álvarez Rabanal; P.J. García Nieto; J. Roces-García; A. Alonso-Estébanez. Nonlinear buckling and failure analysis of a self-weighted metallic roof with and without skylights by FEM. Engineering Failure Analysis 2012, 26, 65 -80.
AMA StyleJ.J. Del Coz Díaz, F.P. Álvarez Rabanal, P.J. García Nieto, J. Roces-García, A. Alonso-Estébanez. Nonlinear buckling and failure analysis of a self-weighted metallic roof with and without skylights by FEM. Engineering Failure Analysis. 2012; 26 ():65-80.
Chicago/Turabian StyleJ.J. Del Coz Díaz; F.P. Álvarez Rabanal; P.J. García Nieto; J. Roces-García; A. Alonso-Estébanez. 2012. "Nonlinear buckling and failure analysis of a self-weighted metallic roof with and without skylights by FEM." Engineering Failure Analysis 26, no. : 65-80.