Lordotic cage [Neurosurgery Wiki]

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=====Lordotic cage=====

Lordotic [[cage]]s provided significant increase in operative level segmental [[lordosis]] compared to non-lordotic cages although overall [[lumbar lordosis]] remained unchanged. Anterior and posterior [[disc height]]s were significantly increased by both cages, providing basis for indirect spinal decompression
((Sembrano JN, Horazdovsky RD, Sharma AK, Yson SC, Santos ER, Polly DW Jr. Do
lordotic Cages Provide Better Segmental Lordosis Versus Non-lordotic Cages in
Lateral Lumbar Interbody Fusion (LLIF)? J Spinal Disord Tech. 2014 Jun 4. [Epub
ahead of print] PubMed PMID: 24901875.)).

Lordotic cage insertion through the [[lateral transpsoas approach]] is being used increasingly for restoration of [[sagittal alignment]]. 

Insertion of a parallel or 10° cage has little effect on lordosis. A 30° cage insertion with ALL release resulted in a modest increase in lordosis (10.5°). The addition of spinous process (SP) resection and [[facetectomy]] was needed to obtain a larger amount of correction (26°). None of the cages, including the 30° lordotic cage, caused a decrease in posterior disk height suggesting hyperlordotic cages do not cause [[foraminal stenosis]]
((Melikian R, Yoon ST, Kim JY, Park KY, Yoon C, Hutton W. Sagittal Plane
Correction Using the Lateral Transpsoas Approach: A Biomechanical Study on the
Effect of Cage Angle and Surgical Technique on Segmental Lordosis. Spine (Phila
Pa 1976). 2016 Sep;41(17):E1016-21. doi: 10.1097/BRS.0000000000001562. PubMed
PMID: 26974836.
)).