Key result
In a case of posterior lumbar spine fusion using Cotrel-Dubousset instrumentation, postoperative rod dislodgement occurred, highlighting the need for tight washer insertion and adequate rod protrusion.
Case Report (n=1)
To avoid rod dislodgement in Cotrel-Dubousset instrumentation, locking washers must be inserted tightly without cross threading and adequate rod length must protrude beyond the screw.
The authors report a case of posterior fusion of the lumbar spine using Cotrel-Dubousset instrumentation in which the rods dislodged from the tulip-headed pedicle screws postoperatively. They recommend that, to avoid this complication, particular care be taken to ensure the locking washers are inserted tightly without cross threading and that an adequate length of rod is left protruding beyond the screw.
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Edmunds et al. (1993) conducted a case report in Posterior fusion of the lumbar spine (n=1). Cotrel-Dubousset instrumentation was evaluated on Rod dislodgement from tulip-headed pedicle screws. In a case of posterior lumbar spine fusion using Cotrel-Dubousset instrumentation, postoperative rod dislodgement occurred, highlighting the need for tight washer insertion and adequate rod protrusion.
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