Atypical lumbar disc herniation

Effect of ligamenta flava hypertrophy on lumbar disc herniation with contralateral symptoms and signs: a clinical and morphometric study

“…Our 5 patients in group II demonstrated painful radiculopathy on the opposite side of the disc herniation and there was no evidence to contact the roots with disc materials on MRI. In the literature, atypical disc herniation with contralateral symptoms was reported and migration of disc herniation to the opposite side was observed on MRI [10, 11]. Sucu and Gelal reported 5 case series similar to our study and proposed that the contralateral symptoms may be related to traction of opposite side roots [12].…”

"Kissing Spinal Disc Herniations", An Atypical Pattern of Lumbar Disc Herniation: A Case Report

“…To our knowledge, founded on a review of the literature, other cases of simultaneous, ipsilateral and convergent migration of two different hernial fragments, belonging to two contiguous disk and migrated in the opposite direction, one towards the other, resulting in a double compression of the same nerve root, have never been described until now [11,12].…”

Frequency of Instrumentation in Lumbar Spinal Stenosis and Lumbar Disc Herniation

“…In fact, upper lumbar spine and extra-foraminal space are proportionately larger than the lower lumbar levels, so high mobility leads to early degeneration and herniation of the disc (29). Perhaps considering ergonomic principles in designing equipment and instruments can avoid damages to lumbar vertebral disc at different levels (30).…”

“…Furthermore, the main cause of disease played an important role in patient's recovery (40). Some of these risk factors included the presence of trauma or injury in spine, weakness in the annulus, lifting heavy objects, exposure to high seismic waves and smoking (30,41).…”