Fig. 9From: Lumbar spine MRI in upright position for diagnosing acute and chronic low back pain: statistical analysis of morphological changesFast spin echo (FSE) T2-weighted magnetic resonance images (MRI) in the sagittal and axial planes. a, c Clinostatism; b, d orthostasis. c Presence of a fluid collection between articular facets at L4–L5 (arrow). d Orthostatic position shows evagination of pseudocystic appearAnce of the right joint capsule with an impression on the nerve root and dural sac (arrowhead)Back to article page