The effect of femoral bone tunnel configuration on tendon-bone healing in an anterior cruciate ligament reconstruction
2018
Objectives To compare the effect of femoral bone tunnel configuration on tendon-
bone healingin an
anterior cruciate ligament(ACL) reconstruction animal model. Methods
Anterior cruciate ligament reconstructionusing the plantaris tendon as graft material was performed on both knees of 24 rabbits (48 knees) to mimic ACL reconstruction by two different suspensory fixation devices for graft fixation. For the adjustable fixation device model (Socket group; group S), a 5 mm deep socket was created in the
lateral femoral condyle(LFC) of the right knee. For the fixed-
loop model(Tunnel group; group T), a femoral tunnel penetrating the LFC was created in the left knee. Animals were sacrificed at four and eight weeks after surgery for histological evaluation and biomechanical testing. Results Histologically, both groups showed a mixture of direct and indirect healing patterns at four weeks, whereas only indirect healing patterns were observed in both groups at eight weeks. No significant histological differences...
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