Úvod: Zlomeniny proximálneho humeru predstavujú asi 4−5 % zo všetkých zlomenín. Terapia dislokovaných 3- a 4-časťových zlomenín je náročná a optimálna liečebná metóda je diskutabilná. Cieľom práce bolo porovnanie operačnej a neoperačnej terapie 3- a 4-časťových zlomenín proximálneho humeru u dospelých pacientov. Metoda: Od septembra 2010 do septembra 2013 sme na II. Ortopedicko-traumatologickej klinike Univerzitnej nemocnice Bratislava prospektívne vyhodnocovali operačnú verzus neoperačnú liečbu 3- a 4-časťových zlomenín proximálneho humeru. Pacienti zaradení do štúdie boli dospelí pacienti s 3- a 4-časťovými zlomeninami proximálneho humeru typu Neer IV, V a VI. V operačnej skupine bolo spolu 20 pacientov liečených pomocou uhlovo-stabilných dláh (Philos, Synthes) a intramedulárnych klincov (Multilock, Synthes). Skupinu tvorilo 13 žien (65 %) a 7 mužov (35 %). Priemerný vek bol 60,9?7,67 (52–80) rokov. Konzervatívna skupina obsahovala 19 pacientov. Dvanásť žien (63,2 %) a sedem mužov (36,8 %). Priemerný vek bol 65,1?9,4 (52−88) rokov. Poranená končatina sa fixovala použitím Gilchristovej bandáže na maximálne 3 týždne. Všetci pacienti boli hodnotení po 12 mesiacoch použitím skórovacieho systému podľa Constant- Murleyho a Oxford Shoulder Score. Druhotne boli hodnotené komplikácie liečby. Výsledky: Relatívne individuálne Constant-Murley Score v celej skupine liečenej operačne bolo priemerne 57,8?23,5 % (11−88 %). Oxford Shoulder Score priemerne 34,8?10,6 (10−46) bodov. Komplikácie boli zaznamenané u 12 pacientov (60 %). V skupine konzervatívnej bolo relatívne individuálne Constant-Murley Score po12 mesiacoch po úraze priemerne 60,9?20,9 % (16−90 %). Oxford Shoulder Score bolo priemerne 36,1?8,9 (15−48) bodov. Komplikácie boli prítomné u 4 pacientov (21,1 %). Záver: V tejto štúdii dislokovaných 3- a 4-časťových zlomenín proximálneho humeru bola operačná skupina pacientov, liečená zväčša použitím uhlovo-stabilných dláh, spojená so značným počtom komplikácií. Horšie funkčné výsledky operačnej skupiny boli porovnateľné s výsledkami skupiny neoperačnej. Pre dosiahnutie lepších výsledkov by sa starostlivo mala posudzovať indikácia operácie, výber pacienta, metóda operácie, operačné skúsenosti ako aj následná rehabilitácia. Kľúčové slová: zlomenina proximálneho humeru − operačná liečba − konzervatívna liečba − 3- a 4-časťové zlomeniny, Introduction: Proximal humerus fractures account for about 4−5% of all fractures. Treatment of 3- and 4-part fractures is difficult, and the optimal treatment option remains controversial. The aim of the study was to compare surgical and non-surgical treatments of 3- and 4-part fractures of the proximal humerus in adults. Method: A prospective study of surgical and non-surgical treatments of 3- and 4-part fractures of the proximal humerus was conducted at the 2nd Department of Orthopedics and Traumatology, University Hospital Bratislava, from September 2010 until September 2013. Patients included in the study were compliant adults patients with 3- and 4-part proximal humerus fractures Neer type IV, V and VI. Twenty patients were treated surgically. The group included 13 women (65%) and 7 men (35%). Mean age was 60.9?7.67 (52–80) years. Angle-stable plates (Philos, Synthes) and intramedullary nails (Multilock, Synthes) were used. The non-surgical group included 19 patients, consisting of 12 (63.2%) women and 7 (36.8%) men. Mean age of both sexes was 66.3?9.5 (52−88) years. Gilchrist bandage was applied for the maximum of 3 weeks. All patients were evaluated at 12 months from treatment using the Constant-Murley scoring system and the Oxford Shoulder Score. Treatment complications were evaluated as a secondary step. Results: The mean individual relative Constant-Murley score was 57.8?23.5% (11−88%) in the surgical group. The mean Oxford Shoulder score was 34.8?10.6 (10−46) points. Complications were recorded in 12 patients (60%). In the non-surgical group, the mean individual relative Constant-Murley score at 12 months from injury was 60.9?20.9% (16−90%). The mean Oxford Shoulder score was 36.1?8.9 (15−48) points. Complications were recorded in 4 patients (21.1%). Conclusions: In this study, surgical treatment patients with displaced 3- and 4-part proximal humerus fractures, mostly treated by angle-stable plates, showed a number of complications. Poor functional results of the surgical group were comparable to those of the non-surgical group. The indication for surgery, patient selection, type of surgery, surgical experience and subsequent rehabilitation should be carefully assessed for better results. Key words: proximal humerus fracture − surgical treatment − non-surgical treatment − 3- and 4-part fractures, and M. Kilian, R. Zamborský, I. Chandoga, M. Budaj, S. Vajczikova
We developed a novel behavioral task in which rats learn to recognize the configuration of objects in an animated scene displayed on a computer screen. The scene consisted of a moving bar and a stationary rectangle. Rats deprived of food were trained to press a lever for reward in a small chamber located in front of the screen. Lever presses were rewarded
only when the bar was at the rectangle. Rats anticipated the reward by gradually increasing frequency of lever pressing as the bar approached the rectangle. Control experiments showed that neither the timing nor the discrimination of rewarded and non-rewarded periods as two discrete conditions explain behavior of the rat. Because the changes in the
scene were generated by movement of the object, the presented task could be used for studying neural structures involved in spatial behavior of rats using virtual reality technology.
Transportation system safety and reliability pertain to the dominant factors affecting present life of human society. In this paper, we describe the method for an analysis and further subsequent optimization of complex transportation system safety and reliability based on their complex sensitivity investigation. Reasonable applications of this theoretical tool can also be used for improvement of complex transportation system resistance against terrorist activities.
Thermal comfort is defined as the mental condition that expresses satisfaction with the thermal environment. It is easy to understand this definition but it is difficult to express it by mathematical equations, because it is needed to take into account many of environmental and personal parameters. The Czech standards contain the equations that describe the thermal comfort through Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD) indexes, also describe the thermal state by the operative temperature. The objective of this article is to prove, if it is possible to estimate the thermal comfort of the environment by using the globe temperature. and Obsahuje seznam literatury