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A \u201crising psoas\u201d may influence the location of the lumbar plexus and result in transient neurological injury on lateral approach to the spine. It is postulated that axial back pain may be exacerbated by anatomical changes of paraspinal musculature as a direct result of degenerative spine conditions. To their knowledge, the authors present the first reported case of a more anteriorly positioned psoas muscle and its resolution following correction of spondylolisthesis in a 62-year-old woman. This case highlights the dynamic nature of degenerative spinal disorders and illustrates that psoas muscle position can be affected by sagittal balance. Normal anatomical positioning can be restored following correction of spinal alignment.<\/jats:p>","DOI":"10.3171\/2016.9.spine16324","type":"journal-article","created":{"date-parts":[[2017,1,6]],"date-time":"2017-01-06T15:03:19Z","timestamp":1483714999000},"page":"441-447","source":"Crossref","is-referenced-by-count":3,"title":["Resolution of the more anteriorly positioned psoas muscle following correction of spinal sagittal alignment from spondylolisthesis: case report"],"prefix":"10.3171","volume":"26","author":[{"given":"Hasan R.","family":"Syed","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Medstar Georgetown University Hospital, Washington, DC; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kurt","family":"Yaeger","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Mount Sinai Hospital, New York, New York"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Faheem A.","family":"Sandhu","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Medstar Georgetown University Hospital, Washington, DC; and"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1-spine16324","series-title":"Spine (Phila Pa 1976)","doi-asserted-by":"publisher","first-page":"E687","DOI":"10.1097\/BRS.0b013e3181ec5911","article-title":"Anatomic mapping of lumbar nerve roots during a direct lateral transpsoas approach to the spine: a cadaveric study","volume":"36","author":"Banagan K,","year":"2011","unstructured":"Banagan K, Gelb D, Poelstra K, Ludwig S: Anatomic mapping of lumbar nerve roots during a direct lateral transpsoas approach to the spine: a cadaveric study. 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