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Orvosi Hetilap
Authors:
Andrea Ágnes Molnár
,
Asztrid Apor
,
Róbert Gábor Kiss
,
István Préda
,
Emil Monos
,
Viktor Bérczi
, and
György László Nádasy

. 1992 263 H315 320 Monos, E., Bérczi, V., Nádasy, G. L.: Local control of veins: Biomechanical, metabolic

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biomechanical research methods helping early preventive rehabilitation of this disease. These research methods were developed earlier by our team [ 3 ]. To evaluate the functional status of patients with progressive muscular atrophy, first of all in the

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Acta Veterinaria Hungarica
Authors:
Dorottya Zólyomi
,
Tamás Ipolyi
,
Péter Molnár
,
Tibor Németh
,
Dénes Faragó
,
Rita Kiss
, and
Ferenc Szalay

et al., 2011 ), whereas with TTA and TTA-rapid this is in the range of 0.01–4.2% ( Butterworth and Kydd, 2016 ; Costa et al., 2017 ; Dyall and Schmökel, 2017 ). Biomechanical studies on canine bones so far mainly focused on bone healing

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and treatment of many of orthopedic disorders. Biomechanics science tries to assess such structures and forces, which play roles in different biological parts of body [ 2, 7 ]. Knowing the probability and quality of changes in adjacent joints, their

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Johnston, J. D., Noble, P. C., Hurwitz, D. E., et al.: Biomechanics of the hip. In: Callaghan, J. J. (ed.): The Adult Hip. Lippincott Williams & Wilkins, Philadelphia, 1998

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The goal of the study was to find a proper technique to fix tendon grafts into an INSTRON loading machine. From 8 human cadavers, 40 grafts were collected. We removed the bone-patella tendon-bone grafts, the semitendinosus and gracilis tendons, the quadriceps tendon-bone grafts, the Achilles tendons, and the peroneus longus tendons from each lower extremity. We tested the tendon grafts with five different types of fixation devices: surgical thread (Premicron 3), general mounting clamp, wire mesh, cement fixation, and a modified clamp for an INSTRON loading machine. The mean failure load in case of surgical thread fixation was (381N ± 26N). The results with the general clamp were (527N ± 45N). The wire meshes were more promising (750N ± 21N), but did not reach the outcomes we desired. Easy slippages of the ends of the tendons from the cement encasements were observed (253N ± 18N). We then began to use Shi’s clamp that could produce 977N ± 416N peak force. We combined Shi’s clamp with freezing of the graft and the rupture of the tendon itself demonstrated an average force of 2198 N ± 773N. We determined that our modified frozen clamp fixed the specimens against high tensile forces.

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Acta Physiologica Hungarica
Authors:
Levente Sára
,
GyL. Nádasy
,
P. Antal
,
M. Szekeres
,
A. Monori-Kiss
,
E. Horváth
,
A. Tőkés
,
G. Masszi
,
E. Monos
, and
Szabolcs Várbíró

To clarify the effects of dihydrotestosterone (DHT)-induced polycystic ovary syndrome (PCOS) on arteriolar biomechanics in a rat model and the possible modulatory role of vitamin D3.Methods and Results The PCOS model was induced in female Wistar rats by ten-weeks DHT treatment. Arteriolar biomechanics was tested in arterioles by pressure arteriography in control as well as DHT- and DHT with vitamin D3-treated animals in contracted and passive conditions. Increased wall stress and distensibility as well as increased vascular lumen were detected after DHT treatment. Concomitant vitamin D3 treatment lowered the mechanical load of the arterioles and restored the vascular diameter.Conclusion The hyperandrogenic state resulted in more rigid, less flexible arteriolar walls with increased vascular lumen compared with controls. DHT treatment caused eutrophic remodelling of gracilis arteriole. These prehypertensive alterations caused by chronic DHT treatment were mostly reversed by concomitant vitamin D3 administration.

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. 2 Brown M B, Lauder M, Dyson R. Activation and contribution of trunk and leg musculature to force production during on-water sprint kayak performance. 28th International Conference on Biomechanics in

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Scapuladyskinesis közepes méretű, teljes vastagságú supraspinatusizom-szakadások esetén

Scapula dyskinesis in medium size full-thickness supraspinatus muscle tears

Orvosi Hetilap
Authors:
Zoltán Nyőgér
,
Norbert Szakály
,
Csenge A. Molnár
,
Anna Várnagy
,
Tamás Terebessy
,
Tibor Gunther
, and
Gábor Skaliczki

movement kayak athletes biomechanics motion analysis and comparative examination. [Ép és mozgásukban korlátozott kajakos sportolók biomechanikai mozgáselemzése és összehasonlító vizsgálata.] Orv Hetil. 2019; 160: 2061

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Abstract

The beneficial effects of hippotherapy lie in the transmission of the horse's movements to the patient. The aim of our work was to create a measurement method for objective evaluation that can be used in natural settings without interfering with therapy.

Methodology/Principal findings

Our measurement system consists of three treble axis accelerometers connected to a data logger. Software was developed for data analysis and post processing. A commercial DVD recording camera was used to document the hippotherapy session. In this paper we present the results obtained in pilot measurements on ten children with cerebral palsy. For reference, a skilled rider was measured on the same horse using a passive following seat.

Conclusions

The acceleration diagrams show common characteristics useful to the interpretation of the movement transfer during hippotherapy as well as individual patterns indicating alterations in the movement reactions of different patients.

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