5Lee JH, Lee JH, Yoon KS, et al. Comparative study of unilateral and bilateral cages with respect to clinical outcomes and stability in instrumented posterior lumbar interbody fusion [ J ]. Neurosurgery, 2008, 63(1) :109 - 113.
6Lee DY, Lee SH, Maeng DH. Two - level anterior lumbar inter- body fusion with pereutaneous pedicle screw fixation: a minimum 3 - year follow - up study [ J ]. Neural Med Chir ( Tokyo ) , 2010, 50(8) :645 -650.
7Fernandez - Fairen M, Sala P, Ramirez H, et al. A prospective randomized study of unilateral versus bilateral instrumented pos- terolateral lumbar fusion in degenerative spondylolisthesis [ J ]. Spine, 2007, 32(4):395 -401.
8Moreland DB, Asch HL, Czajka GA. Posterior lumbar interbody fusion: comparison of single intervertebral cage and single side pedicle screw fixation versus bilateral cages and screw fixation [ J]. Minim Invasive Neurosurg, 2009, 52 ( 3 ) : 132 - 136.
9Jang JS, Lee SH. Minimally invasive transforaminal lumbar inter- body fusion with ipsilateral pedicle screw and contralateral facet screw fixation[J]. J Neurosnrg Spine, 2005, 3(3) :218 -223.
10Sethi A, Lee S, Vaidya R. Transforaminal lumbar interbody fu- sion using unilateral pedicle screws and a translaminar screw[ J]. Eur Spine J, 2009,18(3) :430 -434.
