Lumbar spine is a single functional unit composed of 5 vertebras forming a motion segment connected in series each motion segment consist of 2 adjacent vertebral bodies and connected by Intervertebral disc, Ligaments and muscles1,4,6.
Bony Configuration
Vertebra consists of anterior block of bone – The body.
Posterior bony ring consist of Neural arch – containing articular, transverse and spinous processes.
Neural arch consist of two pedicles and two lamina from which arises the seven processes – one spinous processes, Two Transverse processes and four articular facet.
Adjacent Vertebra is connected together by Intervertebral disc, contributing 20 – 30 % of the spinal length.
Ligaments
Six Ligaments
