Biodegradable fixation of rabbit osteotomies

Seppo Vainionpáá Department of Orthopedics and Traumatology, Helsinki University Central Hospital, Helsinki, Finland

Kim mo Vihtonen Department of Orthopedics and Traumatology, Helsinki University Central Hospital, Helsinki, Finland

Matti Mero Department of Orthopedics and Traumatology, Helsinki University Central Hospital, Helsinki, Finland

Hannu Pátiálá Department of Orthopedics and Traumatology, Helsinki University Central Hospital, Helsinki, Finland

Pentti Rokkanen Department of Orthopedics and Traumatology, Helsinki University Central Hospital, Helsinki, Finland

Jyrki Kilpikari Laboratory of Polymer and Fibre Technology, Tampere University of Technology, Tampere, Finland

Pertti Törmálá Laboratory of Polymer and Fibre Technology, Tampere University of Technology, Tampere, Finland

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Abstract

Osteotomies of the tibial diaphysis were operatively fixed with biodegradable implants in 44 rabbits. Polyglycolic acid (PGA)/polylactic acid (PLA) copolymer implants reinforced with 7 per cent carbon fibre and overlaid with gold were used in 24 rabbits. Poly-beta-hydroxy butyric acid (PHBA) with carbon fibre reinforcement and gold surfacing were used in 20 rabbits. No external support was used. Unsatisfactory results were achieved with the PGA/PLA copolymer implants. Better results were achieved in 15 out of 20 rabbits whose osteotomies were fixed with carbon fibre-reinforced PHBA implants.

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Biodegradable fixation of rabbit osteotomies

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Biodegradable fixation of rabbit osteotomies

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