Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Seppo Vainionpää"'
Autor:
Esa K. Partio, Pertti Törmälä, Pekka Ylinen, Ritva Taurio, Pentti Rokkanen, K. Vihtonen, Seppo Vainionpää, Marja Raekallio
Publikováno v:
Journal of Materials Science: Materials in Medicine. 16:325-331
Porous hydroxyapatite HA blocks reinforced with poly-l/dl-lactide fibres were used to maintain the lumbar disc space and to start to create intercorporeal fusion in 23 growing pigs. In four pigs two emptied non adjacent disc spaces were left open. Af
Autor:
Hannu Pätiälä, Eero Hirvensalo, Esa K. Partio, Ole Böstman, Pentti Rokkanen, K. Vihtonen, Seppo Vainionpää, Pertti Törmälä, E. Antero Mäkelä
Publikováno v:
Biomaterials. 21:2607-2613
Bioabsorbable internal fixation devices were introduced clinically in the treatment of fractures and osteotomies of the extremities at the Department of Orthopaedics and Traumatology, Helsinki University, in 1984. Since November 5, 1984, a total of 3
Autor:
Jarkko Vasenius, Pentti Rokkanen, Timo Pohjonen, Pertti Törmälä, Seppo Vainionpää, Esa K. Partio, Outi Laitinen, Kirsi Jukkala-Partio
Publikováno v:
Journal of Orthopaedic Research. 15:124-127
Seven subcapital femoral osteotomies of adult sheep were each fixed with two absorbable selfreinforced poly-L-lactide lag-screws, and seven other osteotomies were each fixed with two metallic cancellous bone screws. At 3 and 12 weeks, radiographs wer
Autor:
Timo Pohjonen, Pentti Rokkanen, Outi Laitinen, Seppo Vainionpää, Jarkko Vasenius, K. Saarelainen, Pertti Törmälä
Publikováno v:
Archives of Orthopaedic and Trauma Surgery. 112:270-274
The mechanical properties, including maximum load, elongation, and axial rigidity, of the biodegradable poly-l-lactic acid (PLLA) ligament augmentation device were investigated, 6, 12, 24, and 48 weeks after experimental anterior cruciate ligament (A
Autor:
Seppo Vainionpää, Timo Pohjonen, Riitta Suuronen, Ritva Taurio, Pertti Törmälä, K. Rönkkö, L. Wessman
Publikováno v:
Journal of Materials Science: Materials in Medicine. 3:426-431
Self-reinforced poly-L-lactide (SR-PLLA) screws and multilayer plates were studied for their initial mechanical shear and/or tensile strength and strength retentionin vivo andin vitro up to 48 weeks. The plates were studiedin vitro up to 68 weeks. Th
Autor:
K. Vihtonen, Pertti Törmälä, M. Mero, Jarkko Vasenius, Riitta Suuronen, Esa K. Partio, L. Wessman, Seppo Vainionpää
Publikováno v:
Journal of Materials Science: Materials in Medicine. 3:288-292
Nine experimental osteotomies on the neck of a sheep's left mandibular condyle were fixed with self-reinforced poly-L-lactide (SR-PLLA) screws. Metallic screws were used in a group of nine sheep for the same fixation of the osteotomy. The right condy
Autor:
Seppo Vainionpää, P. Törmälä, E. A. Mäkelä, K. Vihtonen, Esa K. Partio, H. Pätiälä, E. Hirvensalo, P. Rokkanen, O. Böstman
Publikováno v:
Orthopedie Traumatologie. 2:107-110
L'utilisation de materiaux d'osteosynthese biodegradables a l'avantage d'eviter la reintervention pour extraire le materiel. Les biomateriaux de polymeres polyglycolides ont ete experimentes sur plus de 3 600 animaux de laboratoire avant leur introdu
Publikováno v:
Journal of Oral and Maxillofacial Surgery. 50:255-262
Eighteen unfavorable transverse osteotomies were created in the mandibular body of sheep. Nine were fixed with self-reinforced poly-1-lactide and nine with metallic dynamic compression plates. Both plates were fixed with similar titanium screws. The
Publikováno v:
Journal of Materials Science: Materials in Medicine. 3:43-47
The strength and strength retention of self-reinforced (SR) absorbable polylactic acid composite rods were evaluated after intramedullary and subcutaneous implantation in rabbits. Rods made of poly-l-lactic acid (SR-PLLA) and of poly-dl-lactic acid +
Publikováno v:
Clinical Materials. 9:77-84
Eighteen osteotomies of sheep's mandibular corpus were fixed: nine with self-reinforced multi-layer poly-l-lactide (SR-PLLA) plates and nine with metallic plates. Both plates were fixed with similar metallic screws. The right corpus of each sheep act