Biomechanical comparison of unilateral and bilateral pedicle screws fixation for transforaminal lumbar interbody fusion after decompressive surgery -- a finite element analysis

BMC Musculoskeletal Disorders, 05/17/2012

Transforaminal lumbar interbody fusion (TLIF) surgery is not favored for asymmetrical positioning of a diagonal cage and unilateral pedicle screw fixation (UPSF) used in contralateral axial rotation or lateral bending. Supplementation of a contralateral facet screw is recommended for the TLIF construct.

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