{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T16:47:28Z","timestamp":1782146848238,"version":"3.54.5"},"reference-count":27,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2026,3,28]],"date-time":"2026-03-28T00:00:00Z","timestamp":1774656000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","nassopenaccess.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["North American Spine Society Journal (NASSJ)"],"published-print":{"date-parts":[[2026,6]]},"DOI":"10.1016\/j.xnsj.2026.100883","type":"journal-article","created":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T16:16:28Z","timestamp":1775060188000},"page":"100883","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":0,"special_numbering":"C","title":["Defining the relationship between the hip, pelvis, and lumbar spine"],"prefix":"10.1016","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1777-2969","authenticated-orcid":false,"given":"Emily S.","family":"Mills","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mary K.","family":"Richardson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jennifer C.","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brian C.","family":"Chung","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Melissa","family":"Romoff","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nathanael D.","family":"Heckmann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.xnsj.2026.100883_bib0001","doi-asserted-by":"crossref","DOI":"10.1097\/00007632-198304000-00014","article-title":"Hip-spine syndrome","volume":"8","author":"Offierski","year":"1983","journal-title":"Spine"},{"key":"10.1016\/j.xnsj.2026.100883_bib0002","doi-asserted-by":"crossref","first-page":"1845","DOI":"10.2106\/JBJS.18.00078","article-title":"Late dislocation following total hip arthroplasty: spinopelvic imbalance as a causative factor","volume":"100","author":"Heckmann","year":"2018","journal-title":"J Bone Joint Surg Am"},{"key":"10.1016\/j.xnsj.2026.100883_bib0003","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1302\/0301-620X.104B1.BJJ-2021-0823.R1","article-title":"The journey to preventing dislocation after total hip arthroplasty : how did we get here?","volume":"104-B","author":"Wright-Chisem","year":"2022","journal-title":"Bone Joint J"},{"issue":"1","key":"10.1016\/j.xnsj.2026.100883_bib0004","doi-asserted-by":"crossref","first-page":"297","DOI":"10.1016\/j.arth.2017.08.040","article-title":"Prior lumbar spinal fusion is associated with an increased risk of dislocation and revision in total hip arthroplasty: a meta-analysis","volume":"33","author":"An","year":"2018","journal-title":"J Arthroplasty"},{"key":"10.1016\/j.xnsj.2026.100883_bib0005","doi-asserted-by":"crossref","first-page":"1635","DOI":"10.1016\/j.arth.2016.11.029","article-title":"Prosthetic dislocation and revision after primary total hip arthroplasty in lumbar fusion patients: a propensity score matched-pair analysis","volume":"32","author":"Perfetti","year":"2017","journal-title":"J Arthroplasty"},{"key":"10.1016\/j.xnsj.2026.100883_bib0006","doi-asserted-by":"crossref","first-page":"817","DOI":"10.1302\/0301-620X.101B7.BJJ-2018-1502.R1","article-title":"Evaluation of the spine is critical in the workup of recurrent instability after total hip arthroplasty","volume":"101-B","author":"Vigdorchik","year":"2019","journal-title":"Bone Joint J"},{"issue":"12","key":"10.1016\/j.xnsj.2026.100883_bib0007","doi-asserted-by":"crossref","first-page":"2884","DOI":"10.1016\/j.arth.2016.07.049","article-title":"Abnormally high dislocation rates of total hip arthroplasty after spinal deformity surgery","volume":"31","author":"Bedard","year":"2016","journal-title":"J Arthroplasty"},{"key":"10.1016\/j.xnsj.2026.100883_bib0008","doi-asserted-by":"crossref","DOI":"10.1016\/j.artd.2023.101105","article-title":"The correlation between pelvic motion and lumbar motion in patients presenting with a lumbar spinal pathology: implications for assessing dislocation risk in total hip arthroplasty","volume":"20","author":"Mills","year":"2023","journal-title":"Arthroplast Today"},{"key":"10.1016\/j.xnsj.2026.100883_bib0009","doi-asserted-by":"crossref","first-page":"1766","DOI":"10.1302\/0301-620X.103B12.BJJ-2020-2451.R2","article-title":"Preoperative spinopelvic hypermobility resolves following total hip arthroplasty","volume":"103-B","author":"Sculco","year":"2021","journal-title":"Bone Joint J"},{"key":"10.1016\/j.xnsj.2026.100883_bib0010","doi-asserted-by":"crossref","DOI":"10.1016\/j.arth.2022.03.038","article-title":"Does low back pain improve following total hip arthroplasty?","volume":"37","author":"Vigdorchik","year":"2022","journal-title":"J Arthroplasty"},{"key":"10.1016\/j.xnsj.2026.100883_bib0011","article-title":"Timing of total hip arthroplasty affects lumbar spinal fusion outcomes","author":"Mills","year":"2021","journal-title":"Clin Spine Surg"},{"issue":"18","key":"10.1016\/j.xnsj.2026.100883_bib0012","doi-asserted-by":"crossref","first-page":"1606","DOI":"10.2106\/JBJS.17.00403","article-title":"Spine-pelvis-hip relationship in the functioning of a total hip replacement","volume":"100","author":"Ike","year":"2018","journal-title":"J Bone Joint Surg Am"},{"key":"10.1016\/j.xnsj.2026.100883_bib0013","doi-asserted-by":"crossref","first-page":"S252","DOI":"10.1016\/j.arth.2020.01.031","article-title":"The majority of total hip arthroplasty patients with a stiff spine do not have an instrumented fusion","volume":"35","author":"Vigdorchik","year":"2020","journal-title":"J Arthroplasty"},{"key":"10.1016\/j.xnsj.2026.100883_bib0014","doi-asserted-by":"crossref","first-page":"675","DOI":"10.2106\/JBJS.21.01127","article-title":"Spinopelvic characteristics normalize 1 year after total hip arthroplasty: a prospective, longitudinal, case-controlled study","volume":"104","author":"Innmann","year":"2022","journal-title":"J Bone Joint Surg Am"},{"key":"10.1016\/j.xnsj.2026.100883_bib0015","doi-asserted-by":"crossref","DOI":"10.5435\/JAAOS-D-20-00953","article-title":"Spinopelvic biomechanics and total hip arthroplasty: a primer for clinical practice","volume":"29","author":"Heckmann","year":"2021","journal-title":"J Am Acad Orthop Surg"},{"key":"10.1016\/j.xnsj.2026.100883_bib0016","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1302\/0301-620X.99B1.BJJ-2016-0415.R1","article-title":"Spinopelvic mobility and acetabular component position for total hip arthroplasty","volume":"99-B","author":"Stefl","year":"2017","journal-title":"Bone Joint J"},{"key":"10.1016\/j.xnsj.2026.100883_bib0017","doi-asserted-by":"crossref","first-page":"676","DOI":"10.1097\/00007632-199603150-00003","article-title":"Kinematic evaluation of lumbar fusion techniques","volume":"21","author":"Esses","year":"1996","journal-title":"Spine"},{"key":"10.1016\/j.xnsj.2026.100883_bib0018","doi-asserted-by":"crossref","DOI":"10.1016\/j.jspd.2019.03.007","article-title":"Spinopelvic compensatory mechanisms for reduced hip motion (ROM) in the setting of hip osteoarthritis","volume":"7","author":"Buckland","year":"2019","journal-title":"Spine Deform"},{"key":"10.1016\/j.xnsj.2026.100883_bib0019","doi-asserted-by":"crossref","DOI":"10.2106\/JBJS.24.00013","article-title":"Patients with hip osteoarthritis have a higher rate of spinal reoperation following lumbar spinal fusion","author":"Mills","year":"2024","journal-title":"J Bone Joint Surg Am"},{"key":"10.1016\/j.xnsj.2026.100883_bib0020","first-page":"100108","article-title":"The sitting vs standing spine","volume":"9","author":"Tsagkaris","year":"2022","journal-title":"N Am Spine Soc J"},{"key":"10.1016\/j.xnsj.2026.100883_bib0021","doi-asserted-by":"crossref","first-page":"1447","DOI":"10.1097\/BRS.0000000000002131","article-title":"Lumbar spine alignment in six common postures","volume":"42","author":"Hey","year":"2017","journal-title":"Spine"},{"key":"10.1016\/j.xnsj.2026.100883_bib0022","doi-asserted-by":"crossref","first-page":"762","DOI":"10.4184\/asj.2015.9.5.762","article-title":"The effect of standing and different sitting positions on lumbar lordosis: radiographic study of 30 healthy volunteers","volume":"9","author":"Cho","year":"2015","journal-title":"Asian Spine J"},{"issue":"1","key":"10.1016\/j.xnsj.2026.100883_bib0023","doi-asserted-by":"crossref","first-page":"20","DOI":"10.3340\/jkns.2012.51.1.20","article-title":"A comparison study on the change in lumbar lordosis when standing, sitting on a chair, and sitting on the floor in normal individuals","volume":"51","author":"Bae","year":"2012","journal-title":"J Korean Neurosurg Soc"},{"key":"10.1016\/j.xnsj.2026.100883_bib0024","doi-asserted-by":"crossref","first-page":"2571","DOI":"10.1097\/00007632-199711010-00020","article-title":"Lumbar lordosis. Effects of sitting and standing","volume":"22","author":"Lord","year":"1997","journal-title":"Spine"},{"key":"10.1016\/j.xnsj.2026.100883_bib0025","doi-asserted-by":"crossref","first-page":"S118","DOI":"10.1016\/j.spinee.2017.07.191","article-title":"Effect of L4-sacrum fusion alignment on biomechanics of the proximal lumbar segments in sitting postures","volume":"17","author":"Patwardhan","year":"2017","journal-title":"Spine J"},{"key":"10.1016\/j.xnsj.2026.100883_bib0026","doi-asserted-by":"crossref","DOI":"10.1016\/j.spinee.2016.10.003","article-title":"Slump sitting X-ray of the lumbar spine is superior to the conventional flexion view in assessing lumbar spine instability","volume":"17","author":"Hey","year":"2017","journal-title":"Spine J"},{"key":"10.1016\/j.xnsj.2026.100883_bib0027","article-title":"Seated lateral X-ray is a better stress radiograph of the lumbar spine compared to standing flexion","author":"Sielatycki","year":"2020","journal-title":"Global Spine J"}],"container-title":["North American Spine Society Journal (NASSJ)"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2666548426000375?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2666548426000375?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,6,22]],"date-time":"2026-06-22T15:51:17Z","timestamp":1782143477000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S2666548426000375"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6]]},"references-count":27,"alternative-id":["S2666548426000375"],"URL":"https:\/\/doi.org\/10.1016\/j.xnsj.2026.100883","relation":{},"ISSN":["2666-5484"],"issn-type":[{"value":"2666-5484","type":"print"}],"subject":[],"published":{"date-parts":[[2026,6]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Defining the relationship between the hip, pelvis, and lumbar spine","name":"articletitle","label":"Article Title"},{"value":"North American Spine Society Journal (NASSJ)","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.xnsj.2026.100883","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Published by Elsevier Inc. on behalf of North American Spine Society.","name":"copyright","label":"Copyright"}],"article-number":"100883"}}