Spinal Decompression and Stabilization: Expandable PLIF Cages over TLIF Cages for Spinal Fusion
نویسندگان
چکیده
Study design: An in vitro biomechanical flexibility and fatigue test comparing two different lumbar interbody fusion cages using mono segmental lumbar spine specimens. Objective: To investigate and compare the stabilizing effect of a transforaminal lumbar interbody fusion (TLIF) cage against an expandable posterior lumbar interbody fusion (PLIF) cage. Method: Six intact human lumbar spine segments were divided into twelve functional spinal units (FSUs), with six samples for each type of cage. Pure moments were applied on intact, standalone cage, and standalone cage with pedicle screwrod instrumentation (pre and post fatigue). The range of motion for every case was recorded and statistically analyzed to investigate the stabilization achieved with the two types of cages. Results and conclusion: The study found that the standalone expandable PLIF cages provide higher stabilization compared to TLIF cages, however in adjunct to pedicle screw system no significant differences exist between the two cages.
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