The effects of continuous passive motion on tendon-bone healing of the tendon autograft used for anterior cruciate ligament reconstruction in a rabbit model / 中华外科杂志
Chinese Journal of Surgery
;
(12): 1088-1091, 2008.
Artigo
em Chinês
| WPRIM
| ID: wpr-258372
ABSTRACT
<p><b>OBJECTIVE</b>To study the effects of continuous passive motion on the tendon-bone healing of the semi-tendinous tendon autograft used for anterior cruciate ligament (ACL) reconstruction in rabbits.</p><p><b>METHODS</b>In 12 healthy 8-month-old male rabbits, an ACL reconstruction was performed by using double semi-tendinous tendon autograft. Postoperatively these animals were treated by either continuous passive motion (CPM) or cage activity. Specimens of the grafts were collected at 6, 12, 24 weeks postoperatively. Histological change in the tendon-bone healing was studied by haematoxylin-eosin and toluidine blue.</p><p><b>RESULTS</b>There was more new fiber tissue in the anterior half of the interface. Osteoclasts were most numerous at the tunnel aperture and in the anterior half of the interface. Cartilage in the tendon-bone interface was localized to the posterior aspect of tunnels, the area where compressive stress would be predicted. CPM group developed a denser connective tissue with less vascularity and cellularity. The bone tunnel had more areas with ingrowing denser connective tissue compared with cage activity specimens. With the growth of Sharpery's fibers and fibrocartilage into the interface, a direct ligament insertion was found. In the CPM specimens, the interface tissue was more mature and the direct insertion was broader and more structured.</p><p><b>CONCLUSIONS</b>Compressive stress promotes chondroid formation, and the tension promotes fiber formation. Tendon-bone healing may be optimized by CPM after tendon transplantation into a bone tunnel.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Cirurgia Geral
/
Tendões
/
Tíbia
/
Transplante
/
Transplante Autólogo
/
Cicatrização
/
Distribuição Aleatória
/
Terapia Passiva Contínua de Movimento
/
Ligamento Cruzado Anterior
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
Idioma:
Chinês
Revista:
Chinese Journal of Surgery
Ano de publicação:
2008
Tipo de documento:
Artigo
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