Summary
Unstable osteochondral fractures were created on one medial femoral condyle of 39
adult rabbits. The fractures were repaired with n-butyl cyanoacrylate adhesive in
21 rabbits. The remaining fractures were not repaired. Radiographs were made at frequent
intervals. The rabbits were euthanatized at 4, 6, 8, 12, and 16 weeks after surgery.
The alignment and stability of the osteochondral fragments were assessed, followed
by collection of sections of the medial femoral condyles for histological evaluation.
Radiologically, the adhesive repaired fractures healed by primary bone union. The
adhesive repaired fractures were significantly (p <0.05) better aligned and more stable
than the non-repaired fractures at necropsy. Histologically, there was healing of
the subchondral fracture lines of adhesive repaired fractures. The articular cartilage
overlying the healing fragments was normal or had only minor surface irregularities.
Keywords
Osteochondral fracture - bone adhesive - cyanoacrylate