In vivo evaluation of porous hydrogel pins to fill osteochondral defects in rabbits.

Autor:	Cardoso TP; Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde de Sorocaba, Sorocaba, SP, Brazil., Ursolino AP; Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde de Sorocaba, Sorocaba, SP, Brazil., Casagrande PM; Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde de Sorocaba, Sorocaba, SP, Brazil., Caetano EB; Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde de Sorocaba, Sorocaba, SP, Brazil., Mistura DV; Universidade Federal de São Carlos, Sorocaba, SP, Brazil., Duek EA; Pontifícia Universidade Católica de São Paulo, Faculdade de Ciências Médicas e da Saúde de Sorocaba, Sorocaba, SP, Brazil.
Jazyk:	angličtina
Zdroj:	Revista brasileira de ortopedia [Rev Bras Ortop] 2016 Dec 29; Vol. 52 (1), pp. 95-102. Date of Electronic Publication: 2016 Dec 29 (Print Publication: 2017).
DOI:	10.1016/j.rboe.2016.03.009
Abstrakt:	Objective: This experimental study aimed to evaluate the biological performance of poly (l-co-D, l-lactic acid)-co-trimetilene carbonate/poly (vinyl alcohol) (PLDLA-co TMC/PVA), hydrogel scaffolds, as an implant in the filling (and not in the repair) of osteochondral defects in New Zealand rabbits, assessing the influence of the material in tissue protection in vivo . Methods: Twelve rabbits were divided into groups of nine and 16 weeks. In each animal, an osteochondral defect was created in both medial femoral condyles. In one knee, a hydrogel scaffold was implanted (pin group) and in the other, the defect was maintained (control group). A histological analysis of the material was performed after euthanasia. Results: The condyles of the pin group showed no inflammatory reaction and were surrounded by a fibrous capsule. The control group presented higher bone growth in the areas of the defect, but with disorganized articular cartilage, evident fibrosis, bone exposure, atrophy, and proliferation of synovial membrane. Conclusion: The hydrogel pins are promising in filling osteochondral defects, generally do not cause inflammatory reactions, and are not effective in the repair of osteochondral defects.
Databáze:	MEDLINE
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