Lumbar Disc Disease Jae-Won You, M.D. Department of Orthopaedic Surgery, College of Medicine, Chosun University, Kwangju, Korea Address reprint reques

Lumbar Disc Disease Jae-Won You, M.D. Department of Orthopaedic Surgery, College of Medicine, Chosun University, Kwangju, Korea Address reprint requests to Jae-Won You, M.D. Department of Orthopaedic Surgery, College of Medicine, Chosun University, Kwangju, Korea #588 Seosuk-dong, Dong-gu, Kwangju, 501-140, Korea Tel : 82-62-220-3140, Fax : 82-62-226-3379, E-mail : jwyou@mail.chosun.ac.kr - 208 -

Fig. 1. MRI finding(t2 weighted image) of disc degeneration showing low signal intensity of the L3-4 disc, increased signal intensity on the inferior endplate of L4 and superior endplate of L5, and collapsed disc space of L5-S1. - 209 -

Fig. 2. Types of intervertebral disc herniation. 1. Protruding type 2. Extruding type a. Subligamentous b. Transligamentous 3. Sequestrating type Fig. 3. Anamalies of lumbosacral nerve root. Type - Intradural anastomosis Type - Anomalous origin of nerve roots Type - Extradural anastomosis Type - Extradural division - 210 -

Fig. 4. Sensory, motor and tendon reflex changes on the level of disc herniation - 211 -

Fig. 5. Waddell s nonorganic test. - 212 -

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Fig. 6. CT and MRI findings of lumbar spine. - 214 -

Fig. 7. Wiltse paraspinal approach for excision of foraminal and far lateral herniated disc is intermuscular dissection between multifidus and longissimus. - 215 -

Fig. 8. MRI finding of foraminal and fat lateral disc herniation showing disc material in the intervertebral foramen and left posterolateral corner of the disc. - 216 -

Table 1. 5 stages of disc degeneration(adams et al, 1986) - 217 -

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