Posterior Longitudinal Ligament

Posterior Longitudinal Ligament The PPL comprised of collagen fibers with elastin densely concentrated at its center originates at the base of the clivus and extends to the sacrum. More marked stenosis caused clinical myelopathy.

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The increased size may decrease the precarious space in the vertebral canal already occupied by the spinal cord and its coverings.

Posterior longitudinal ligament

. The posterior longitudinal ligament is situated within the vertebral canal and extends along the posterior surfaces of the bodies of the vertebra from the body of the axis where it is continuous with the membrana tectoria to the sacrum. This is a retrospective study. Ossification of the posterior longitudinal ligament OPLL is a relatively common cause of spinal stenosis in Japanese patients most frequently involving the cervical spine.

Ossification of the posterior longitudinal ligament most commonly occurs in the cervical spine neck. Ossification of the posterior longitudinal ligament of the spine OPLL is a condition that is characterized by the calcification of the soft tissues that connect the bones of the spine which may lead to compression of the spinal cord. Ossification of the posterior longitudinal ligament led to stenosis of the spinal canal.

Some are longitudinal and extend from the skull to the sacrum. As previously mentioned these ligamentous tissues can suffer injury degenerative laxity hypertrophy and ossification. OPLL is most commonly reported in the cervical spine with fewer reported cases of thoracic or lumbar OPLL.

The Anterior Longitudinal Ligament connects the front of each vertebra to each other. Others have a segmental arrangement and interconnect adjacent posterior arches. Longitudinal Ligaments Causing Back or Neck Pain.

Injury will usually be caused by trauma or drastic overuse. It is broader above than below and thicker in the thoracic than in the cervical and lumbar regions. The Ligamentum Flavum covers the dura mater which is the layer of tissue that protects the spinal cord.

Ossification of the posterior longitudinal ligament OPLL of the spine is. It courses from the posterior aspect of the body of C2 inferiorly to the sacrum and possibly to the coccyx Behrsin Briggs 1988. The posterior longitudinal ligament PLL is a long and important ligament located immediately posterior to the vertebral bodies to which it attaches loosely and intervertebral discs to which it is firmly attached.

From L2 upwards the ligament thins markedly. The present results demonstrate that a sufficient posterior shift of the spinal cord and neurologic improvement will not be obtained after posterior decompression surgery in the K-line - group. The ossification in OPLL causes the ligament to become rigid and grow in size.

Three Most Important Ligaments 1. They have the particularity of being in continuity in the horizontal plane. A series of 72 patients who underwent single-level percutaneous endoscopic lumbar discectomy performed for lumbar disc herniation with LBP from June 2014 to June 2016 were examined.

Posterior Longitudinal Ligament Anterior Resection of Ossification of the Posterior Longitudinal Ligament. It is attached to each disc anulus where it is widest and is narrowest at each midvertebral level. Ossification of the posterior longitudinal ligament OPLL is a relatively rare disorder characterized by elongation of the posterior longitudinal ligament followed by the progressive development of ectopic osseous tissue along the ligament.

All these scenarios might be implicated in causing or contributing to a back or neck pain syndrome. This ligament runs up and down. To illustrate the posterior longitudinal ligament is one of the tissue candidates who can contribute to low back pain LBP.

The ventral anterior and dorsal posterior longitudinal ligaments ALL and PLL and the supra-spinous ligament. The posterior longitudinal ligament seems to be most developed at the level of L3 and L4 where its average thickness is 14 mm. Males are more frequently involved than females and the 5th decade of life is a common time for symptoms to develop.

There is a thicker middle portion approximately about 25-4 mm in width throughout the whole length of the ligament. A new concept for making decisions regarding the surgical approach for cervical ossification of the posterior longitudinal ligament. Posterior Longitudinal Ligament The posterior longitudinal ligament PLL is the inferior continuation of the tectorial membrane see Figs.

The posterior longitudinal ligament is a flexible ligament which is naturally not ossified. It is 1 to 2 mm thick centrally thinning out laterally. Radiologic Anatomy of the.

Ossification of the posterior longitudinal ligament developed most frequently at C5 and was rare in thoracic and lumbar regions. The posterior longitudinal ligament runs the entire length of the spine from the neck to the end of the spine and stabilizes the spinal column bones.

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