{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,12,23]],"date-time":"2023-12-23T00:23:01Z","timestamp":1703290981718},"reference-count":10,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec id=\"st1\">\n<jats:title>Background: <\/jats:title>\n<jats:p>S2 alar-iliac screws (S2AIS) are widely used to anchor the pelvis to a lumbar fusion. Here, we report a patient who experienced repetitive dislodgement of the set screws of the S2AIS following a posterior instrumented fusion.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"st2\">\n<jats:title>Case Description: <\/jats:title>\n<jats:p>A 68-year-old male presented with an L3 metastasis and L2\u2013L3 subluxation attributed to renal cell cancer. Following an L2\u2013L5 posterior decompression and T9-pelvic fusion utilizing bilateral S2AIS fixation, the set screws of the S2AIS repeatedly dislodged, requiring two additional operations. The final surgery required multiple anchors to the ilium and provided adequate fixation until the patient\u2019s expiration.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"st3\">\n<jats:title>Conclusion: <\/jats:title>\n<jats:p>The set screw fixing force was weaker than the fixing force of the S2AIS; multiple iliac anchors effectively salvaged this condition.<\/jats:p>\n<\/jats:sec>","DOI":"10.25259\/sni_859_2023","type":"journal-article","created":{"date-parts":[[2023,12,22]],"date-time":"2023-12-22T11:11:41Z","timestamp":1703243501000},"page":"439","update-policy":"http:\/\/dx.doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Metastatic renal cell carcinoma of the lumbar spine with long posterior instrumented fusion and repetitive dislodgement of the set screws of the S2 alar-iliac screw"],"prefix":"10.25259","volume":"14","author":[{"given":"Shinsuke","family":"Yoshida","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shunpei","family":"Iida","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rei","family":"Akagawa","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Soichi","family":"Oya","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuo","family":"Saita","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoshi","family":"Ogihara","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Saitama Medical Center, Saitama Medical University, Kawagoe, Japan."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2023,12,22]]},"reference":[{"key":"10.25259\/SNI_859_2023\/ref-1","doi-asserted-by":"crossref","first-page":"436","DOI":"10.1097\/BRS.0b013e318194128c","article-title":"Low profile pelvic fixation: Anatomic parameters for sacral alar-iliac fixation versus traditional iliac fixation","volume":"34","author":"Chang","year":"2009","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_859_2023\/ref-2","doi-asserted-by":"crossref","first-page":"445","DOI":"10.3171\/2013.6.SPINE121129","article-title":"Failure of lumbopelvic fixation after long construct fusions in patients with adult spinal deformity: Clinical and radiographic risk factors: Clinical article","volume":"19","author":"Cho","year":"2013","journal-title":"J Neurosurg Spine"},{"key":"10.25259\/SNI_859_2023\/ref-3","doi-asserted-by":"crossref","first-page":"E142","DOI":"10.1097\/BRS.0000000000001722","article-title":"Use of S2-alar-iliac screws associated with less complications than iliac screws in adult lumbosacropelvic fixation","volume":"42","author":"Elder","year":"2017","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_859_2023\/ref-4","doi-asserted-by":"crossref","first-page":"E1221","DOI":"10.1097\/BRS.0b013e3181e16ae2","article-title":"A novel classification system for spinal instability in neoplastic disease: An evidence-based approach and expert consensus from the Spine Oncology Study Group","volume":"35","author":"Fisher","year":"2010","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_859_2023\/ref-5","doi-asserted-by":"crossref","first-page":"1085","DOI":"10.1007\/s00586-014-3615-1","article-title":"Sacropelvic fixation in adult spinal deformity (ASD); a very high rate of mechanical failure","volume":"24","author":"Guler","year":"2015","journal-title":"Eur Spine J"},{"key":"10.25259\/SNI_859_2023\/ref-6","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1093\/ons\/opaa251","article-title":"Durability and failure types of S2-alar-iliac screws: An analysis of 312 consecutive screws","volume":"20","author":"Hyun","year":"2020","journal-title":"Oper Neurosurg (Hagerstown)"},{"key":"10.25259\/SNI_859_2023\/ref-7","doi-asserted-by":"crossref","first-page":"2245","DOI":"10.1097\/BRS.0b013e3181f5cfae","article-title":"Sacropelvic fixation: Techniques and complications","volume":"35","author":"Kebaish","year":"2010","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_859_2023\/ref-8","doi-asserted-by":"crossref","first-page":"2329","DOI":"10.1097\/01.brs.0000238968.82799.d9","article-title":"Pseudarthrosis in long adult spinal deformity instrumentation and fusion to the sacrum: Prevalence and risk factor analysis of 144 cases","volume":"31","author":"Kim","year":"2006","journal-title":"Spine (Phila Pa 1976)"},{"key":"10.25259\/SNI_859_2023\/ref-9","doi-asserted-by":"crossref","first-page":"603","DOI":"10.1093\/neuros\/nyaa469","article-title":"Failure types and related factors of spinopelvic fixation after long construct fusion for adult spinal deformity","volume":"88","author":"Park","year":"2021","journal-title":"Neurosurgery"},{"key":"10.25259\/SNI_859_2023\/ref-10","doi-asserted-by":"crossref","first-page":"2186","DOI":"10.1097\/01.brs.0000180401.06919.a5","article-title":"A revised scoring system for preoperative evaluation of metastatic spine tumor prognosis","volume":"30","author":"Tokuhashi","year":"2005","journal-title":"Spine (Phila Pa 1976)"}],"container-title":["Surgical Neurology International"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/surgicalneurologyint.com\/metastatic-renal-cell-carcinoma-of-the-lumbar-spine-with-long-posterior-instrumented-fusion-and-repetitive-dislodgement-of-the-set-screws-of-the-s2-alar-iliac-screw\/","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/surgicalneurologyint.com\/surgicalint-articles\/metastatic-renal-cell-carcinoma-of-the-lumbar-spine-with-long-posterior-instrumented-fusion-and-repetitive-dislodgement-of-the-set-screws-of-the-s2-alar-iliac-screw\/","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,22]],"date-time":"2023-12-22T11:11:54Z","timestamp":1703243514000},"score":1,"resource":{"primary":{"URL":"http:\/\/surgicalneurologyint.com\/surgicalint-articles\/metastatic-renal-cell-carcinoma-of-the-lumbar-spine-with-long-posterior-instrumented-fusion-and-repetitive-dislodgement-of-the-set-screws-of-the-s2-alar-iliac-screw\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,12,22]]},"references-count":10,"alternative-id":["10.25259\/SNI_859_2023"],"URL":"https:\/\/doi.org\/10.25259\/sni_859_2023","relation":{},"ISSN":["2152-7806","2229-5097"],"issn-type":[{"value":"2152-7806","type":"electronic"},{"value":"2229-5097","type":"print"}],"subject":[],"published":{"date-parts":[[2023,12,22]]},"article-number":"439"}}