Abstract:

BACKGROUND: Computer and finite element methods have been used to explore manipulation treatment.
OBJECTIVE: To explore the mechanism of manipulation treatment of lumbar intervertebral disc protrusion, investigate a way consistent with the treatment of biomechanics and confirm the safety scope of the manipulation of lumbar disorders.
METHODS: One adult male volunteer with no spinal disorders, aged 28 years, 170 cm height and 60 kg body mass was subjected to CT scanning of the L3-S1 using Adina component-based software, and assigned different materials attributes to different tissues to establish lumbar spine finite element model. The level of lumbar spine position, extension 10 °, flexion 30 ° were set and subjected to pulling, extension and compression loads to observe force change of lumbar intervertebral disc, nucleus pulposus and annulus fibrosus.
RESULTS AND CONCLUSION: Under pulling, extension and compression states, the intervertebral disc displayed the most obvious displacement, strain and stress changes at lumbar flexion 30 °, suggesting treatment of lumbar spinal disorders is safe in certain conditions.