Integração do tendão do músculo semitendíneo na reconstrução do ligamento cruzado anterior: estudo biomecânico, histológico e ressonância magnética em coelhos / The incorporation of the semitendinous tendon autograft at the femoral femoral bone tunnel after anterior cruciate ligament reconstrcuction in rabbits: biomechanical histology and magnetic resonance image analysis

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The purpose was to verify the incorporation (healing) of the graft of the semitendinous tendon into the femoral bone tunnel after an anterior cruciate ligament reconstruction, and verify the post operative evolution of the biomechanical histology and magnetic resonance image analysis of the graft into the femoral bone tunnel. Fifteen New Zealand white rabbits were submitted to an intra-articular anterior cruciate ligament reconstruction in the left knee, using semitendinous tendon autograft. The rabbits were submitted to an magnetic resonance image at 4, 8 and 12 weeks after surgery, after which they were euthanized. The left knee of each rabbit was disarticulated and the anterior cruciate ligament reconstruction was tested for the biomechanical properties and histological analysis of the femoral tunnel. Every rabbit knee showed incorporation of the tendon at the femoral tunnel as of the fourth week in all of the knees studied. After the fourth week signs of integration occurred in the histological analysis and heterogeneous alterations in the magnetic resonance image of the graft and the surrounding areas, which suggests a healing process. Despite the biomechanical incorporation of the graft in the femoral bone tunnel after the fourth week it was not possible to affirm that there occurred incorporation of the graft until the completion of 12 weeks in histological and magnetic resonance image analysis.

ASSUNTO(S)

ligamento cruzado anterior histologia osseointegração biomechanical magnetic resonance image espectroscopia de ressonância magnética histology incorporation biomecânica reconstruction surgery procedure knee/surgery joelho/cirurgia procedimentos cirúrgicos reconstrutivos anterior cruciate ligament

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