{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T08:50:55Z","timestamp":1784278255510,"version":"3.55.0"},"reference-count":44,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,7]]},"abstract":"\n OBJECTIVE<\/jats:title>\n The incidence of sacroiliac joint (SIJ) dysfunction after lumbosacral fusion is high. Upfront bilateral SIJ fusion using novel fenestrated self-harvesting porous S2\u2013alar iliac (S2AI) screws could reduce the incidence of SIJ dysfunction and need for subsequent SIJ fusion. In this study, the authors report their early clinical and radiographic results of SIJ fusion using this novel screw.<\/jats:p>\n <\/jats:sec>\n \n METHODS<\/jats:title>\n The authors began using self-harvesting porous screws in July 2022. This is a retrospective review of consecutive patients at a single institution who underwent long thoracolumbar surgery with extension to the pelvis using this porous screw. Radiographic parameters of regional and global alignment were collected preoperatively and at the time of last follow-up. The incidence of intraoperative complications and need for revision were collected. The incidences of mechanical complications, including screw breakage, implant loosening\/pullout, and screw cap dislocation at the time of last follow-up were also collected.<\/jats:p>\n <\/jats:sec>\n \n RESULTS<\/jats:title>\n Ten patients with a mean age of 67 years were included, 6 of whom were male. Seven patients had a thoracolumbar construct with extension to the pelvis. Three patients had upper instrumented vertebrae at the proximal lumbar spine. Intraoperative breach was not encountered in any of the patients (0%). Postoperatively, 1 patient (10%) had screw breakage at the neck of the tulip of the modified iliac screw discovered at routine follow-up without clinical sequalae.<\/jats:p>\n <\/jats:sec>\n \n CONCLUSIONS<\/jats:title>\n Use of self-harvesting porous S2AI screws incorporated into long thoracolumbar constructs was safe and feasible, demanding unique technical considerations. Long-term clinical and radiographic follow-up with a large patient cohort is necessary to determine their durability and efficacy to achieve SIJ arthrodesis and prevent SIJ dysfunction.<\/jats:p>\n <\/jats:sec>","DOI":"10.3171\/2023.4.focus23149","type":"journal-article","created":{"date-parts":[[2023,7,1]],"date-time":"2023-07-01T08:54:50Z","timestamp":1688201690000},"page":"E5","source":"Crossref","is-referenced-by-count":12,"title":["Bilateral sacroiliac joint fusion in long constructs using self-harvesting porous S2\u2013alar iliac screws with an integrated tulip: technical considerations and early clinical and radiographic experience"],"prefix":"10.3171","volume":"55","author":[{"given":"Nima","family":"Alan","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katriel E.","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James J.","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S. Harrison","family":"Farber","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joseph D.","family":"DiDomenico","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luke K.","family":"O\u2019Neill","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jay D.","family":"Turner","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan S.","family":"Uribe","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Barrow Neurological Institute, Phoenix, Arizona"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"issue":"3","key":"b1","series-title":"Spine (Phila Pa 1976).","first-page":"303","article-title":"Minimum 5-year analysis of L5\u2013S1 fusion using sacropelvic fixation (bilateral S1 and iliac screws) for spinal deformity","volume":"31","author":"Tsuchiya K","year":"2006","unstructured":"Tsuchiya K, Bridwell KH, Kuklo TR, Lenke LG, Baldus C. Minimum 5-year analysis of L5\u2013S1 fusion using sacropelvic fixation (bilateral S1 and iliac screws) for spinal deformity. Spine (Phila Pa 1976).2006;31(3):303\u2013308."},{"issue":"1","key":"b2","series-title":"BMC Musculoskelet Disord","first-page":"676","article-title":"Use of iliac screw associated with more correction of lumbar lordosis than S2-alar-iliac screw for adult spinal deformity","volume":"22","author":"Luo Q","year":"2021","unstructured":"Luo Q, Kim YC, Kim KT, Use of iliac screw associated with more correction of lumbar lordosis than S2-alar-iliac screw for adult spinal deformity. BMC Musculoskelet Disord. 2021;22(1):676."},{"issue":"5","key":"b3","series-title":"J Clin Orthop Trauma","first-page":"853","article-title":"Sacropelvic fixation techniques - current update","volume":"11","author":"Nanda A","year":"2020","unstructured":"Nanda A, Manghwani J, Kluger PJ. Sacropelvic fixation techniques - current update. J Clin Orthop Trauma. 2020;11(5):853\u2013862."},{"issue":"17","key":"b4","series-title":"Spine (Phila Pa 1976).","first-page":"E1024","article-title":"Sacropelvic fixation with S2 alar iliac screws may prevent sacroiliac joint pain after multisegment spinal fusion","volume":"44","author":"Unoki E","year":"2019","unstructured":"Unoki E, Miyakoshi N, Abe E, Sacropelvic fixation with S2 alar iliac screws may prevent sacroiliac joint pain after multisegment spinal fusion. Spine (Phila Pa 1976).2019;44(17):E1024\u2013E1030."},{"issue":"9","key":"b5","series-title":"Eur Spine J","first-page":"1788","article-title":"Sacroiliac joint pain after lumbar\/lumbosacral fusion: current knowledge","volume":"21","author":"Yoshihara H","year":"2012","unstructured":"Yoshihara H. Sacroiliac joint pain after lumbar\/lumbosacral fusion: current knowledge. Eur Spine J. 2012;21(9):1788\u20131796."},{"issue":"5","key":"b6","series-title":"Pain Med","first-page":"732","article-title":"Etiology of chronic low back pain in patients having undergone lumbar fusion","volume":"12","author":"DePalma MJ","year":"2011","unstructured":"DePalma MJ, Ketchum JM, Saullo TR. Etiology of chronic low back pain in patients having undergone lumbar fusion. Pain Med. 2011;12(5):732\u2013739."},{"issue":"4","key":"b7","series-title":"Pain Med","first-page":"565","article-title":"Sacroiliac joint pain after lumbar and lumbosacral fusion: findings using dual sacroiliac joint blocks","volume":"12","author":"Liliang PC","year":"2011","unstructured":"Liliang PC, Lu K, Liang CL, Tsai YD, Wang KW, Chen HJ. Sacroiliac joint pain after lumbar and lumbosacral fusion: findings using dual sacroiliac joint blocks. Pain Med. 2011;12(4):565\u2013570."},{"issue":"4","key":"b8","series-title":"JBJS Essent Surg Tech","first-page":"e21.00044","article-title":"Multiple points of pelvic fixation: stacked S2-alar-iliac screws (S2AI) or concurrent S2AI and open sacroiliac joint fusion with triangular titanium rod","volume":"12","author":"Polly DW Jr","year":"2022","unstructured":"Polly DW Jr, Holton KJ, Soriano PO, Multiple points of pelvic fixation: stacked S2-alar-iliac screws (S2AI) or concurrent S2AI and open sacroiliac joint fusion with triangular titanium rod. JBJS Essent Surg Tech. 2022;12(4):e21.00044."},{"issue":"10","key":"b9","series-title":"Spine J","first-page":"1717","article-title":"The use of triangular implants to enhance sacropelvic fixation: a finite element investigation","volume":"20","author":"Panico M","year":"2020","unstructured":"Panico M, Chande RD, Lindsey DP, The use of triangular implants to enhance sacropelvic fixation: a finite element investigation. Spine J. 2020;20(10):1717\u20131724."},{"issue":"12","key":"b10","series-title":"Eur Spine J","first-page":"3763","article-title":"Innovative sacropelvic fixation using iliac screws and triangular titanium implants","volume":"30","author":"Panico M","year":"2021","unstructured":"Panico M, Chande RD, Lindsey DP, Innovative sacropelvic fixation using iliac screws and triangular titanium implants. Eur Spine J. 2021;30(12):3763\u20133770."},{"issue":"3","key":"b11","series-title":"J Neurosurg Spine","first-page":"320","article-title":"Biomechanical effects of a novel posteriorly placed sacroiliac joint fusion device integrated with traditional lumbopelvic long-construct instrumentation","volume":"35","author":"de Andrada Pereira B","year":"2021","unstructured":"de Andrada Pereira B, Lehrman JN, Sawa AGU, Biomechanical effects of a novel posteriorly placed sacroiliac joint fusion device integrated with traditional lumbopelvic long-construct instrumentation. J Neurosurg Spine. 2021;35(3):320\u2013329."},{"issue":"1","key":"b12","series-title":"J Neurosurg Spine","first-page":"42","article-title":"Biomechanics of a laterally placed sacroiliac joint fusion device supplemental to S2 alar-iliac fixation in a long-segment adult spinal deformity construct: a cadaveric study of stability and strain distribution","volume":"36","author":"de Andrada Pereira B","year":"2021","unstructured":"de Andrada Pereira B, Wangsawatwong P, Lehrman JN, Biomechanics of a laterally placed sacroiliac joint fusion device supplemental to S2 alar-iliac fixation in a long-segment adult spinal deformity construct: a cadaveric study of stability and strain distribution. J Neurosurg Spine. 2021;36(1):42\u201352."},{"key":"b13","series-title":"World Neurosurg","first-page":"e380","article-title":"Stopping at sacrum versus nonsacral vertebra in long fusion surgery for adult spinal deformity: meta-analysis of revision with minimum 2-year follow-up","volume":"124","author":"Chen S","year":"2018","unstructured":"Chen S, Luo M, Wang Y, Liu H. Stopping at sacrum versus nonsacral vertebra in long fusion surgery for adult spinal deformity: meta-analysis of revision with minimum 2-year follow-up. World Neurosurg. 2018;124:e380\u2013e6."},{"issue":"20","key":"b14","series-title":"Spine (Phila Pa 1976).","first-page":"S234","article-title":"The pros and cons to saving the L5\u2013S1 motion segment in a long scoliosis fusion construct","volume":"28","author":"Bridwell KH","year":"2003","unstructured":"Bridwell KH, Edwards CC II, Lenke LG. The pros and cons to saving the L5\u2013S1 motion segment in a long scoliosis fusion construct. Spine (Phila Pa 1976).2003;28(20):S234\u2013S242."},{"issue":"4","key":"b15","series-title":"J Bone Joint Surg Am","first-page":"721","article-title":"Pseudarthrosis in adult spinal deformity following multisegmental instrumentation and arthrodesis","volume":"88","author":"Kim YJ","year":"2006","unstructured":"Kim YJ, Bridwell KH, Lenke LG, Cho KJ, Edwards CC II, Rinella AS. Pseudarthrosis in adult spinal deformity following multisegmental instrumentation and arthrodesis. J Bone Joint Surg Am. 2006;88(4):721\u2013728."},{"key":"b16","first-page":"83","article-title":"The S2 portal to the ilium. Semin Spine Surg","volume":"2","author":"Sponseller PD","year":"2007","unstructured":"Sponseller PD. The S2 portal to the ilium. Semin Spine Surg. 2007;2:83\u201387."},{"issue":"6","key":"b17","series-title":"Spine J","first-page":"964","article-title":"Postoperative complications of S2AI versus iliac screw in spinopelvic fixation: a meta-analysis and recent trends review","volume":"20","author":"Hasan MY","year":"2020","unstructured":"Hasan MY, Liu G, Wong HK, Tan JH. Postoperative complications of S2AI versus iliac screw in spinopelvic fixation: a meta-analysis and recent trends review. Spine J. 2020;20(6):964\u2013972."},{"issue":"1","key":"b18","series-title":"J Neurosurg Spine","first-page":"53","article-title":"Acute failure of S2-alar-iliac screw pelvic fixation in adult spinal deformity: novel failure mechanism, case series, and review of the literature","volume":"36","author":"Martin CT","year":"2021","unstructured":"Martin CT, Polly DW, Holton KJ, Acute failure of S2-alar-iliac screw pelvic fixation in adult spinal deformity: novel failure mechanism, case series, and review of the literature. J Neurosurg Spine. 2021;36(1):53\u201361."},{"key":"b19","series-title":"Clinicoecon Outcomes Res","first-page":"523","article-title":"Cost-utility analysis of sacroiliac joint fusion in high-risk patients undergoing multi-level lumbar fusion to the sacrum","volume":"14","author":"Ackerman SJ","year":"2022","unstructured":"Ackerman SJ, Deol GS, Polly DW. Cost-utility analysis of sacroiliac joint fusion in high-risk patients undergoing multi-level lumbar fusion to the sacrum. Clinicoecon Outcomes Res. 2022;14:523\u2013535."},{"issue":"1","key":"b20","series-title":"J Neurosurg Spine","first-page":"86","article-title":"Bilateral open sacroiliac joint fusion during adult spinal deformity surgery using triangular titanium implants: technique description and presentation of 21 cases","volume":"36","author":"Martin CT","year":"2021","unstructured":"Martin CT, Holton KJ, Jones KE, Sembrano JN, Polly DW. Bilateral open sacroiliac joint fusion during adult spinal deformity surgery using triangular titanium implants: technique description and presentation of 21 cases. J Neurosurg Spine. 2021;36(1):86\u201392."},{"key":"b21","series-title":"World Neurosurg","first-page":"10","article-title":"Rescue pelvic fixation in a patient with sacral-2-alar-iliac and triangular sacroiliac joint fusion (Bedrock) instrumentation","volume":"169","author":"Ladd B","year":"2023","unstructured":"Ladd B, Jones K, Polly D Jr. Rescue pelvic fixation in a patient with sacral-2-alar-iliac and triangular sacroiliac joint fusion (Bedrock) instrumentation. World Neurosurg. 2023;169:10\u201311."},{"issue":"5","key":"b22","series-title":"Eur Spine J","first-page":"1085","article-title":"Sacropelvic fixation in adult spinal deformity (ASD); a very high rate of mechanical failure","volume":"24","author":"Guler UO","year":"2015","unstructured":"Guler UO, Cetin E, Yaman O, Sacropelvic fixation in adult spinal deformity (ASD); a very high rate of mechanical failure. Eur Spine J. 2015;24(5):1085\u20131091."},{"issue":"3","key":"b1","series-title":"Spine (Phila Pa 1976).","first-page":"303","article-title":"Minimum 5-year analysis of L5\u2013S1 fusion using sacropelvic fixation (bilateral S1 and iliac screws) for spinal deformity","volume":"31","author":"Tsuchiya K","year":"2006","unstructured":"Tsuchiya K, Bridwell KH, Kuklo TR, Lenke LG, Baldus C. Minimum 5-year analysis of L5\u2013S1 fusion using sacropelvic fixation (bilateral S1 and iliac screws) for spinal deformity. Spine (Phila Pa 1976).2006;31(3):303\u2013308."},{"issue":"1","key":"b2","series-title":"BMC Musculoskelet Disord","first-page":"676","article-title":"Use of iliac screw associated with more correction of lumbar lordosis than S2-alar-iliac screw for adult spinal deformity","volume":"22","author":"Luo Q","year":"2021","unstructured":"Luo Q, Kim YC, Kim KT, Use of iliac screw associated with more correction of lumbar lordosis than S2-alar-iliac screw for adult spinal deformity. BMC Musculoskelet Disord. 2021;22(1):676."},{"issue":"5","key":"b3","series-title":"J Clin Orthop Trauma","first-page":"853","article-title":"Sacropelvic fixation techniques - current update","volume":"11","author":"Nanda A","year":"2020","unstructured":"Nanda A, Manghwani J, Kluger PJ. Sacropelvic fixation techniques - current update. J Clin Orthop Trauma. 2020;11(5):853\u2013862."},{"issue":"17","key":"b4","series-title":"Spine (Phila Pa 1976).","first-page":"E1024","article-title":"Sacropelvic fixation with S2 alar iliac screws may prevent sacroiliac joint pain after multisegment spinal fusion","volume":"44","author":"Unoki E","year":"2019","unstructured":"Unoki E, Miyakoshi N, Abe E, Sacropelvic fixation with S2 alar iliac screws may prevent sacroiliac joint pain after multisegment spinal fusion. Spine (Phila Pa 1976).2019;44(17):E1024\u2013E1030."},{"issue":"9","key":"b5","series-title":"Eur Spine J","first-page":"1788","article-title":"Sacroiliac joint pain after lumbar\/lumbosacral fusion: current knowledge","volume":"21","author":"Yoshihara H","year":"2012","unstructured":"Yoshihara H. Sacroiliac joint pain after lumbar\/lumbosacral fusion: current knowledge. Eur Spine J. 2012;21(9):1788\u20131796."},{"issue":"5","key":"b6","series-title":"Pain Med","first-page":"732","article-title":"Etiology of chronic low back pain in patients having undergone lumbar fusion","volume":"12","author":"DePalma MJ","year":"2011","unstructured":"DePalma MJ, Ketchum JM, Saullo TR. Etiology of chronic low back pain in patients having undergone lumbar fusion. Pain Med. 2011;12(5):732\u2013739."},{"issue":"4","key":"b7","series-title":"Pain Med","first-page":"565","article-title":"Sacroiliac joint pain after lumbar and lumbosacral fusion: findings using dual sacroiliac joint blocks","volume":"12","author":"Liliang PC","year":"2011","unstructured":"Liliang PC, Lu K, Liang CL, Tsai YD, Wang KW, Chen HJ. Sacroiliac joint pain after lumbar and lumbosacral fusion: findings using dual sacroiliac joint blocks. Pain Med. 2011;12(4):565\u2013570."},{"issue":"4","key":"b8","series-title":"JBJS Essent Surg Tech","first-page":"e21.00044","article-title":"Multiple points of pelvic fixation: stacked S2-alar-iliac screws (S2AI) or concurrent S2AI and open sacroiliac joint fusion with triangular titanium rod","volume":"12","author":"Polly DW Jr","year":"2022","unstructured":"Polly DW Jr, Holton KJ, Soriano PO, Multiple points of pelvic fixation: stacked S2-alar-iliac screws (S2AI) or concurrent S2AI and open sacroiliac joint fusion with triangular titanium rod. JBJS Essent Surg Tech. 2022;12(4):e21.00044."},{"issue":"10","key":"b9","series-title":"Spine J","first-page":"1717","article-title":"The use of triangular implants to enhance sacropelvic fixation: a finite element investigation","volume":"20","author":"Panico M","year":"2020","unstructured":"Panico M, Chande RD, Lindsey DP, The use of triangular implants to enhance sacropelvic fixation: a finite element investigation. Spine J. 2020;20(10):1717\u20131724."},{"issue":"12","key":"b10","series-title":"Eur Spine J","first-page":"3763","article-title":"Innovative sacropelvic fixation using iliac screws and triangular titanium implants","volume":"30","author":"Panico M","year":"2021","unstructured":"Panico M, Chande RD, Lindsey DP, Innovative sacropelvic fixation using iliac screws and triangular titanium implants. Eur Spine J. 2021;30(12):3763\u20133770."},{"issue":"3","key":"b11","series-title":"J Neurosurg Spine","first-page":"320","article-title":"Biomechanical effects of a novel posteriorly placed sacroiliac joint fusion device integrated with traditional lumbopelvic long-construct instrumentation","volume":"35","author":"de Andrada Pereira B","year":"2021","unstructured":"de Andrada Pereira B, Lehrman JN, Sawa AGU, Biomechanical effects of a novel posteriorly placed sacroiliac joint fusion device integrated with traditional lumbopelvic long-construct instrumentation. J Neurosurg Spine. 2021;35(3):320\u2013329."},{"issue":"1","key":"b12","series-title":"J Neurosurg Spine","first-page":"42","article-title":"Biomechanics of a laterally placed sacroiliac joint fusion device supplemental to S2 alar-iliac fixation in a long-segment adult spinal deformity construct: a cadaveric study of stability and strain distribution","volume":"36","author":"de Andrada Pereira B","year":"2021","unstructured":"de Andrada Pereira B, Wangsawatwong P, Lehrman JN, Biomechanics of a laterally placed sacroiliac joint fusion device supplemental to S2 alar-iliac fixation in a long-segment adult spinal deformity construct: a cadaveric study of stability and strain distribution. J Neurosurg Spine. 2021;36(1):42\u201352."},{"key":"b13","series-title":"World Neurosurg","first-page":"e380","article-title":"Stopping at sacrum versus nonsacral vertebra in long fusion surgery for adult spinal deformity: meta-analysis of revision with minimum 2-year follow-up","volume":"124","author":"Chen S","year":"2018","unstructured":"Chen S, Luo M, Wang Y, Liu H. Stopping at sacrum versus nonsacral vertebra in long fusion surgery for adult spinal deformity: meta-analysis of revision with minimum 2-year follow-up. World Neurosurg. 2018;124:e380\u2013e6."},{"issue":"20","key":"b14","series-title":"Spine (Phila Pa 1976).","first-page":"S234","article-title":"The pros and cons to saving the L5\u2013S1 motion segment in a long scoliosis fusion construct","volume":"28","author":"Bridwell KH","year":"2003","unstructured":"Bridwell KH, Edwards CC II, Lenke LG. The pros and cons to saving the L5\u2013S1 motion segment in a long scoliosis fusion construct. Spine (Phila Pa 1976).2003;28(20):S234\u2013S242."},{"issue":"4","key":"b15","series-title":"J Bone Joint Surg Am","first-page":"721","article-title":"Pseudarthrosis in adult spinal deformity following multisegmental instrumentation and arthrodesis","volume":"88","author":"Kim YJ","year":"2006","unstructured":"Kim YJ, Bridwell KH, Lenke LG, Cho KJ, Edwards CC II, Rinella AS. Pseudarthrosis in adult spinal deformity following multisegmental instrumentation and arthrodesis. J Bone Joint Surg Am. 2006;88(4):721\u2013728."},{"key":"b16","first-page":"83","article-title":"The S2 portal to the ilium. Semin Spine Surg","volume":"2","author":"Sponseller PD","year":"2007","unstructured":"Sponseller PD. The S2 portal to the ilium. Semin Spine Surg. 2007;2:83\u201387."},{"issue":"6","key":"b17","series-title":"Spine J","first-page":"964","article-title":"Postoperative complications of S2AI versus iliac screw in spinopelvic fixation: a meta-analysis and recent trends review","volume":"20","author":"Hasan MY","year":"2020","unstructured":"Hasan MY, Liu G, Wong HK, Tan JH. Postoperative complications of S2AI versus iliac screw in spinopelvic fixation: a meta-analysis and recent trends review. Spine J. 2020;20(6):964\u2013972."},{"issue":"1","key":"b18","series-title":"J Neurosurg Spine","first-page":"53","article-title":"Acute failure of S2-alar-iliac screw pelvic fixation in adult spinal deformity: novel failure mechanism, case series, and review of the literature","volume":"36","author":"Martin CT","year":"2021","unstructured":"Martin CT, Polly DW, Holton KJ, Acute failure of S2-alar-iliac screw pelvic fixation in adult spinal deformity: novel failure mechanism, case series, and review of the literature. J Neurosurg Spine. 2021;36(1):53\u201361."},{"key":"b19","series-title":"Clinicoecon Outcomes Res","first-page":"523","article-title":"Cost-utility analysis of sacroiliac joint fusion in high-risk patients undergoing multi-level lumbar fusion to the sacrum","volume":"14","author":"Ackerman SJ","year":"2022","unstructured":"Ackerman SJ, Deol GS, Polly DW. Cost-utility analysis of sacroiliac joint fusion in high-risk patients undergoing multi-level lumbar fusion to the sacrum. Clinicoecon Outcomes Res. 2022;14:523\u2013535."},{"issue":"1","key":"b20","series-title":"J Neurosurg Spine","first-page":"86","article-title":"Bilateral open sacroiliac joint fusion during adult spinal deformity surgery using triangular titanium implants: technique description and presentation of 21 cases","volume":"36","author":"Martin CT","year":"2021","unstructured":"Martin CT, Holton KJ, Jones KE, Sembrano JN, Polly DW. Bilateral open sacroiliac joint fusion during adult spinal deformity surgery using triangular titanium implants: technique description and presentation of 21 cases. J Neurosurg Spine. 2021;36(1):86\u201392."},{"key":"b21","series-title":"World Neurosurg","first-page":"10","article-title":"Rescue pelvic fixation in a patient with sacral-2-alar-iliac and triangular sacroiliac joint fusion (Bedrock) instrumentation","volume":"169","author":"Ladd B","year":"2023","unstructured":"Ladd B, Jones K, Polly D Jr. Rescue pelvic fixation in a patient with sacral-2-alar-iliac and triangular sacroiliac joint fusion (Bedrock) instrumentation. World Neurosurg. 2023;169:10\u201311."},{"issue":"5","key":"b22","series-title":"Eur Spine J","first-page":"1085","article-title":"Sacropelvic fixation in adult spinal deformity (ASD); a very high rate of mechanical failure","volume":"24","author":"Guler UO","year":"2015","unstructured":"Guler UO, Cetin E, Yaman O, Sacropelvic fixation in adult spinal deformity (ASD); a very high rate of mechanical failure. 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