{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,30]],"date-time":"2026-05-30T09:04:27Z","timestamp":1780131867345,"version":"3.54.0"},"reference-count":70,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,9]]},"abstract":"\n OBJECTIVE<\/jats:title>\n In an effort to prevent loss of segmental lordosis (SL) with minimally invasive interbody fusions, manufacturers have increased the amount of lordosis that is built into interbody cages. However, the relationship between cage lordotic angle and actual SL achieved intraoperatively remains unclear. The purpose of this study was to determine if the lordotic angle manufactured into an interbody cage impacts the change in SL during minimally invasive surgery (MIS) for lumbar interbody fusion (LIF) done for degenerative pathology.<\/jats:p>\n <\/jats:sec>\n \n METHODS<\/jats:title>\n The authors performed a retrospective review of a single-surgeon database of adult patients who underwent primary LIF between April 2017 and December 2018. Procedures were performed for 1\u20132-level lumbar degenerative disease using contemporary MIS techniques, including transforaminal LIF (TLIF), lateral LIF (LLIF), and anterior LIF (ALIF). Surgical levels were classified on lateral radiographs based on the cage lordotic angle (6\u00b0\u20138\u00b0, 10\u00b0\u201312\u00b0, and 15\u00b0\u201320\u00b0) and the position of the cage in the disc space (anterior vs posterior). Change in SL was the primary outcome of interest. Subgroup analyses of the cage lordotic angle within each surgical approach were also conducted.<\/jats:p>\n <\/jats:sec>\n \n RESULTS<\/jats:title>\n A total of 116 surgical levels in 98 patients were included. Surgical approaches included TLIF (56.1%), LLIF (32.7%), and ALIF (11.2%). There were no differences in SL gained by cage lordotic angle (2.7\u00b0 SL gain with 6\u00b0\u20138\u00b0 cages, 1.6\u00b0 with 10\u00b0\u201312\u00b0 cages, and 3.4\u00b0 with 15\u00b0\u201320\u00b0 cages, p = 0.581). Subgroup analysis of LLIF showed increased SL with 15\u00b0 cages only (p = 0.002). The change in SL was highest after ALIF (average increase 9.8\u00b0 in SL vs 1.8\u00b0 in TLIF vs 1.8\u00b0 in LLIF, p < 0.001). Anterior position of the cage in the disc space was also associated with a significantly greater gain in SL (4.2\u00b0 vs \u22120.3\u00b0, p = 0.001), and was the only factor independently correlated with SL gain (p = 0.016).<\/jats:p>\n <\/jats:sec>\n \n CONCLUSIONS<\/jats:title>\n Compared with cage lordotic angle, cage position and approach play larger roles in the generation of SL in 1\u20132-level MIS for lumbar degenerative disease.<\/jats:p>\n <\/jats:sec>","DOI":"10.3171\/2020.6.focus20393","type":"journal-article","created":{"date-parts":[[2020,9,1]],"date-time":"2020-09-01T06:32:03Z","timestamp":1598941923000},"page":"E17","source":"Crossref","is-referenced-by-count":55,"title":["Does interbody cage lordosis impact actual segmental lordosis achieved in minimally invasive lumbar spine fusion?"],"prefix":"10.3171","volume":"49","author":[{"given":"Francis C.","family":"Lovecchio","sequence":"first","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Avani S.","family":"Vaishnav","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael E.","family":"Steinhaus","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yahya A.","family":"Othman","sequence":"additional","affiliation":[{"name":"Weill Cornell Medicine\u2013Qatar, Alsad, Doha, Qatar; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Catherine Himo","family":"Gang","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sravisht","family":"Iyer","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"},{"name":"Weill Cornell Medical College, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven J.","family":"McAnany","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"},{"name":"Weill Cornell Medical College, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Todd J.","family":"Albert","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"},{"name":"Weill Cornell Medical College, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheeraz A.","family":"Qureshi","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, New York;"},{"name":"Weill Cornell Medical College, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"issue":"5","key":"b1","series-title":"J Neurosurg Spine","doi-asserted-by":"publisher","first-page":"560","DOI":"10.3171\/2018.4.SPINE171153","article-title":"The impact of age on surgical goals for spinopelvic alignment in minimally invasive surgery for adult spinal deformity","volume":"29","author":"Park P","year":"2018","unstructured":"Park P, Fu KM, Mummaneni PV, The impact of age on surgical goals for spinopelvic alignment in minimally invasive surgery for adult spinal deformity. 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