Conducto Lumbar estrecho. Una actualizaciòn.

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Actualización en estenorraquis lumbar: diagnóstico, tratamiento y controversias

Molina M, Wagner P, Campos M.

Rev Med Chil. 2011 Nov;139(11):1488-95. doi: /S0034-98872011001100016. Epub 2012 Feb 8. Review. Spanish.
PMID: 22446657 [PubMed – indexed for MEDLINE]

 Spinal lumbar stenosis is a disease that occurs mainly between the 5th and 7th decade of life and can be congenital or acquired. The latter has many etiologies, but a degenerative cause is the most common. Stenosis is a narrowing of the spinal canal diameter caused by many factors such as bulging discs, hypertrophy of flavum ligament, facet capsule thickening and osteophyte formation. The classical symptom of the disease is sciatic pain, that improves with lumbar flexion and worsens with ambulation. Neurological examination is often normal and the most useful imaging test is magnetic resonance imaging (MRI). Conservative management consists in non-steroidal anti-inflammatory drugs, muscle relaxants, physical therapy and epidural – radicular infiltrations. Spinal infiltrations have a proven efficacy for pain management. A good result of this therapy predicts a favorable outcome after surgery. Surgical treatment consists in decompression with or without lumbar fusion. The addition of an arthrodesis is recommended for degenerative spondylolisthesis, correction of deformities, recurrent spinal stenosis with instability, sagittal or coronal imbalance and adjacent segment disease.

Key words: Arthrodesis; Spinal stenosis; Spondylolisthesis.

La raquiestenosis lumbar se define como una disminución del área del canal raquídeo que puede comprimir las raíces nerviosas. La incidencia en las imágenes de este cuadro va de 1,7% a 13,1%1, sin embargo, la incidencia clínica es menor y genera sus síntomas con mayor frecuencia entre la 5° y la 7° década de la vida. Su causa principal son los cambios degenerativos de la columna vertebral. Se produce con igual frecuencia entre hombres y mujeres, excepto cuando esta patología se asocia a espondilolistesis, la cual es de mayor incidencia en mujeres. No hay asociación con actividad laboral o física.
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