Fig. 4From: Safety and tolerability of intradiscal implantation of combined autologous adipose-derived mesenchymal stem cells and hyaluronic acid in patients with chronic discogenic low back pain: 1-year follow-up of a phase I studyPossible causes of treatment failures in cases 3 and 6. Lumbar lateral X-ray imaging (a), T2 sagittal MRI (b), and T2 axial MRI (c) of case 3 showing degenerative spondylolisthesis of L4 on L5 (slippage or displacement of L4 vertebra compared to L5 vertebra) and spinal stenosis. T2 sagittal MRI (d) and T2 axial MRI (e) of case 9 revealed left-sided L4–5 herniated NP with decreased disc heightBack to article page