Pseudocystic degeneration of the lumbar ligamentum flavum: a little known entity

Journal of Spinal Disorders & Techniques
Lukas M WildiPius Brühlmann

Abstract

The objective of this work was to investigate the clinical and histologic features of patients with pseudocystic lesions of the ligamentum flavum in the lumbar region of the spinal canal and ascertain the existence of genuine ligamentum flavum pseudocysts. Retrospective chart and histologic study of a patient cohort with lumbar radiculopathy due to a cystic intraspinal lesion and who had undergone decompressive surgery was conducted. Intraoperatively, the stenosing process had been found to be different from common etiologic entities and had been submitted for histologic examination. The 33 patients with symptoms and signs of lumbar radiculopathy were between 48 and 85 years of age (mean 63.5 years). Twenty (61%) of them were women. All patients showed degenerative changes of the bony structures of the spine by conventional radiography. Segmental instability due to degeneration of the lumbar spine was present in 45%. Computed tomography and/or magnetic resonance imaging showed a cystic lesion. Clinical and histologic examination confirmed their origin from within the severely degenerated ligamentum flavum. Radiologic, surgical, and histologic findings suggest that the pseudocystic degeneration of the ligamentum flavum represent...Continue Reading

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Citations

Nov 27, 2008·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Jin-Sung KimSang-Ho Lee
Apr 23, 2009·Photomedicine and Laser Surgery·Jin-Sung KimSang-Ho Lee
Dec 29, 2009·Photomedicine and Laser Surgery·Jin-Sung Kim, Sang-Ho Lee
Jan 2, 2010·Journal of Neurosurgery. Spine·Robert J SpinnerKimberly K Amrami
Nov 24, 2006·Journal of Neurosurgery. Spine·Takashi KusakabeShoichi Kokubun
Mar 20, 2012·Neurologia i neurochirurgia polska·Massimo MiscusiAntonino Raco
Jun 29, 2010·Journal of Orthopaedics and Traumatology : Official Journal of the Italian Society of Orthopaedics and Traumatology·H TahaM Schirmer
Jan 10, 2018·Histopathology·Ivan ChebibG Petur Nielsen

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