Fig. 1From: Biomechanical characteristics of a novel interspinous distraction fusion device in the treatment of lumbar degenerative diseases: a finite element analysis(a) The finite analysis model included three vertebrae (L3, L4 and L5), two IVDs (L3/4 and L4/5), four facet joints, and seven ligaments. (b) Four kinds of 3D lumbar models (L3-L5). (A) Intact model. (B) Unilateral decompression model. (C) Internal fixation alone model. (D) Unilateral decompression combined with internal fixation modelBack to article page