Efficacia del trattamento conservativo in soggetti affetti da groin pain: una revisione sistematica della letteratura

Background: il groin pain è un dolore riferito in un’area che è delimitata medialmente dalla sinfisi pubica, superiormente dal basso addome, lateralmente dalla spina iliaca antero-superiore e inferiormente dalla porzione mediale della coscia. Una sindrome composta da patologie multiple e, per quanto sia diffusa a livello di casistica di infortunio, si tratta di una delle lesioni meno comprese e poco spiegate in chirurgia generale e ortopedia. In questo scenario, colpisce prevalentemente il giovane sportivo causando dolore e interruzione della pratica sportiva. Obiettivi: valutare l’efficacia della gestione conservativa su dolore e ritorno all’attività sportiva in pazienti con problematiche e lesioni nella zona pubico- inguinale. Materiali e metodi: la ricerca è stata condotta su due banche dati: PubMed e Cochrane Library. Non è stato impostato il filtro lingua; sono stati inclusi studi di trattamento in atleti con dolore all’inguine, studi randomizzati controllati, studi clinici controllati e serie di casi. Risultati: il trattamento conservativo si è rivelato sicuro ed efficace nella gestione del dolore all’inguine con un buon numero di atleti che è riuscito a tornare all’attività sportiva. Tuttavia secondo gli studi presi in considerazione, il trattamento chirurgico risulta più efficace in termini di tempi di recupero; per cui spesso viene utilizzato dopo il fallimento della terapia conservativa nell’atleta. Conclusioni: nella gestione dei pazienti affetti da groin pain come primo approccio si deve sempre preferire l’approccio conservativo rispetto al chirurgico, in quanto meno invasivo e comunque riporta buone evidenze scientifiche per quanto riguarda l’efficacia. Qualora questo non riportasse miglioramenti evidenti al termine di un periodo di cura di qualche settimana, si può procedere all’operazione chirurgica secondo la tecnica (chirurgica) giudicata più idonea alla situazione.

Analysis, modelling and design of a groin as coastal protection structure at Lido di Dante, Ravenna

An analysis and a subsequent solution is here presented. This document is about a groin design able to contrast the erosion actions given by waves in Lido di Dante. Advantages will be visible also for Fiumi Uniti's inlet, in the north side of the shoreline. Beach future progression and growth will be subjected to monitoring actions in the years after groin construction. The resulting effects of the design will have a positive impact not only on the local fauna and environment, but also, a naturalistic appeal will increase making new type of tourists coming not only for recreational purposes. The design phase is focused on possible design alternatives and their features. Particular interest is given to scouring phenomena all around the groin after its construction. Groin effects will impact not only on its south side, instead they will cause an intense erosion process on the downdrift front. Here, many fishing hut would be in danger, thus a beach revetment structure is needed to avoid any future criticality. In addiction, a numerical model based on a generalized shoreline change numerical model, also known as GENESIS, has been applied to the study area in order to perform a simplistic analysis of the shoreline and its future morphology. Critical zones are visible in proximity of the Fiumi Uniti's river inlet, where currents from the sea and the river itself start the erosion process that is affecting Lido di Dante since mid '80s, or even before. The model is affected by several assumptions that make results not to be interpreted as a real future trend of the shore. Instead the model allows the user to have a more clear view about critical processes induced by monochromatic inputed waves. In conclusion, the thesis introduce a wide analysis on a complex erosion process that is affecting many shoreline nowadays. A groin design is seen as a hard solution it is considered to be the only means able to decrease the rate of erosion.

Data analysis of collapse mechanisms of a 3D printed groin vault in shaking table testing

The aim of this novel experimental study is to investigate the behaviour of a 2m x 2m model of a masonry groin vault, which is built by the assembly of blocks made of a 3D-printed plastic skin filled with mortar. The choice of the groin vault is due to the large presence of this vulnerable roofing system in the historical heritage. Experimental tests on the shaking table are carried out to explore the vault response on two support boundary conditions, involving four lateral confinement modes. The data processing of markers displacement has allowed to examine the collapse mechanisms of the vault, based on the arches deformed shapes. There then follows a numerical evaluation, to provide the orders of magnitude of the displacements associated to the previous mechanisms. Given that these displacements are related to the arches shortening and elongation, the last objective is the definition of a critical elongation between two diagonal bricks and consequently of a diagonal portion. This study aims to continue the previous work and to take another step forward in the research of ground motion effects on masonry structures.