title: Healing properties of surface-coated polycaprolactone-co-lactide scaffolds: a pilot study in sheep.
abstract: The aim of this pilot study was to evaluate the bioactive, surface-coated polycaprolactone-co-lactide scaffolds as bone implants in a tibia critical size defect model. Polycaprolactone-co-lactide scaffolds were coated with collagen type I and chondroitin sulfate and 30 piled up polycaprolactone-co-lactide scaffolds were implanted into a 3 cm sheep tibia critical size defect for 3 or 12 months (n = 5 each). Bone healing was estimated by quantification of bone volume in the defects on computer tomography and microcomputer tomography scans, plain radiographs, biomechanical testing as well as by histological evaluations. New bone formation occurred at the proximal and distal ends of the tibia in both groups. The current pilot study revealed a mean new bone formation of 63% and 172% after 3 and 12 months, respectively. The bioactive, surface coated, highly porous three-dimensional polycaprolactone-co-lactide scaffold stack itself acted as a guide rail for new bone formation along and into the implant. These preliminary data are encouraging for future experiments with a larger group of animals.
authors: 1Department of Trauma and Reconstructive Surgery, University Hospital Carl Gustav Carus Dresden, Dresden, Germany.
authors: Claudia
authors: C
authors: Rentsch
authors: Wolfgang
authors: W
authors: Schneiders
authors: Ricarda
authors: R
authors: Hess
authors: Barbe
authors: B
authors: Rentsch
authors: Ricardo
authors: R
authors: Bernhardt
authors: Kathrin
authors: K
authors: Spekl
authors: Konrad
authors: K
authors: Schneider
authors: Dieter
authors: D
authors: Scharnweber
authors: Achim
authors: A
authors: Biewener
authors: Stefan
authors: S
authors: Rammelt
mesh_terms: D000818:Animals; D020099:Coated Materials, Biocompatible; D011091:Polyesters; D012756:Sheep; D013499:Surface Properties; D054457:Tissue Scaffolds; D014945:Wound Healing; D055114:X-Ray Microtomography
chemical_list: D020099:Coated Materials, Biocompatible; D011091:Polyesters; C553659:polycaprolactone-co-lactide
keywords: Polycaprolactone-co-lactide scaffold; bone healing; collagen type I and chondroitin sulfate; sheep; tibia defect