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The lumbosacral joint is a joint of the body, between the last lumbar vertebra and the first sacral segment of the vertebral column. [1] [2] In some ways, calling it a "joint" (singular) is a misnomer, since the lumbosacral junction includes a disc between the lower lumbar vertebral body and the uppermost sacral vertebral body, as well as two lumbosacral facet joints (right and left ...
The lumbar plexus is a web of nerves (a nerve plexus) in the lumbar region of the body which forms part of the larger lumbosacral plexus.It is formed by the divisions of the first four lumbar nerves (L1-L4) and from contributions of the subcostal nerve (T12), which is the last thoracic nerve.
The lumbar and sacral plexuses innervate the pelvic girdle and lower limbs. Ventral rami, including the sinuvertebral nerve branches, also supply structures anterior to the facet joint, including the vertebral bodies, the discs and their ligaments, and joins other spinal nerves to form the lumbosacral plexus .
The lumbosacral ligament or lateral lumbosacral ligament is a ligament that helps to stabilise the lumbosacral joint. The ligament's medial attachment is at (the inferior border of) transverse process of lumbar vertebra L5; its lateral attachment is at the ala of sacrum .
The sacrum is curved upon itself and placed very obliquely, its base projecting forward and forming the prominent sacrovertebral angle when articulated with the last lumbar vertebra. It is also known as the "lumbosacral angle".
The spinal cord (and brain) are protected by three layers of tissue or membranes called meninges, that surround the canal. The dura mater is the outermost layer, and it forms a tough protective coating. Between the dura mater and the surrounding bone of the vertebrae is a space called the epidural space.
Vertex Pharmaceuticals' suzetrigine is an investigational pain treatment. It will seek label expansions thereafter, including in targeting painful lumbosacral radiculopathy (LSR, a condition that ...
[2]: 45 It is thicker and broader in the lumbar region than in the thoracic region, and intimately blended with the neighboring fascia in both these regions. [3] Inferior to L4, the supraspinous ligament becomes indistinct, lost amid the prominent lumbar fascia. [4] J: Supraspinous ligament