Lordosis

Lordosis is a medical term used to describe an inward curvature of a portion of the vertebral column. Two segments of the vertebral column, namely cervical and lumbar, are normally lordotic, that is, they are set in a curve that has its convexity anteriorly and concavity posteriorly , in the context of human anatomy. When referring to the anatomy of other mammals, the direction of the curve is termed ventral. Curvature in the opposite direction, that is, apex posteriorly or dorsally is termed kyphosis.Lordotic curvatures of the vertebral column, also known as secondary curvatures are caused mainly because of the difference of thickness between the anterior and posterior part of the intervertebral disc. Those curvatures start to appear during the fetal period, but don't become evident until infancy.Excessive lordotic curvature is also called hollow back, saddle back, and swayback. Common causes of excessive lordosis including tight low back muscles, excessive visceral fat, and pregnancy. Although lordosis gives an impression of a stronger back, ironically it can lead to moderate to severe lower back pain. Loss of lordosis is sometimes seen with painful spinal conditions. If rigid, usually after spinal fusion surgery, it is known as flat-back.The familiar overly-concave shape of the horse's back is, by extension, described as lordotic. Lordosis behavior refers to the position that some mammals display when they are ready to mate. It is actually evolutionarily a mating display. (From the Wikpedia article Lordosis.)

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Recent Publications on Lordosis:
Differences in Male and Female Spino-Pelvic Alignment in Asymptomatic Young Adults: A Three-Dimensional Analysis Using Upright Low-Dose Digital Biplanar X-rays. STUDY DESIGN.: A three-dimensional analysis of spino-pelvic alignment in...	21st November, 2009	From the *Laboratoire de Biomecanique, Arts et Metiers ParisTech-CNRS,	Spine (Phila Pa 1976). 2009 Nov 1;34(23):E826-E832. DOI Direct Link
A stiff and straight back preoperatively is associated with a good outcome 2 years after lumbar disc surgery. BACKGROUND AND PURPOSE: The degree of lumbar lordosis and reduced lumbar...	18th November, 2009	Department of Orthopedics, Orebro University Hospital, Orebro, Sweden.	Acta Orthop. 2009 Oct;80(5):573-8.
Sciatic nerve compression related to ossification of the sacrospinous ligament secondary to pelvic balance abnomalities. The authors report an isolated case of right sacrospinous ligament...	17th November, 2009	Orthopaedic Department, Hotel-Dieu Teaching Medical Center, 1, place	Orthop Traumatol Surg Res. 2009 Nov 10. DOI Direct Link
Pedicle subtraction osteotomies for the correction of post-traumatic thoracolumbar kyphosis. Traumatic compression fractures are usually treated non-surgically. In...	17th November, 2009	Department of Neurological Surgery, University of California San	J Clin Neurosci. 2009 Nov 10. DOI Direct Link
The impact of intra-operative sternum vertical displacement on the sagittal curves of the spine. Patient positioning is an important step in spinal surgeries. Many...	11th November, 2009	Department of Mechanical Engineering, Ecole Polytechnique de Montreal,	Eur Spine J. 2009 Nov 10. DOI Direct Link
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Lordosis Patents:
US Patent No.	Title
7507255	Insertion tool for use with trial intervertebral distraction spacers
7556607	Devices and techniques relating to range of motion of the cervical spine
7557109	Treatment for attention-deficit hyperactivity disorder
7558622	Mesh network stroke monitoring appliance
7559942	Spine stabilization system
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