Jayant, S.K., Bhosale, S., Gulabani, Y., Meshram, J., Kedar, M., Maheshwari, R. and Muni, P. 2026. Investigating the correlation between facet joint fluid and instability in degenerative lumbar disease on flexion and extension radiographs: a retrospective study. International Journal of Research in Orthopaedics. 12, 6 (Oct. 2026), 1810–1816. DOI:https://doi.org/10.18203/issn.2455-4510.IntJResOrthop20263916.