Fig. 1From: Increased lactic acid content associated with extracellular matrix depletion in a porcine disc degeneration induced by superficial annular lesionMRI scanning showed obvious intervertebral disc degeneration in annular lesion (AL) surgery group. a T2-weighted sagittal MRI scans, showed changes in nuclear volume and signal intensity in disc(T12–L4) 4/8/12 weeks after AL surgery compared with the sham group discs. b Axial MRI scans of disc(L1–2) in sham and AL groupBack to article page