{"id":"https://openalex.org/W3203376739","doi":"https://doi.org/10.1177/21925682211031514","title":"Aggravation of Ossified Ligamentum Flavum Lesion Is Associated With the Degree of Obesity","display_name":"Aggravation of Ossified Ligamentum Flavum Lesion Is Associated With the Degree of Obesity","publication_year":2021,"publication_date":"2021-10-06","ids":{"openalex":"https://openalex.org/W3203376739","doi":"https://doi.org/10.1177/21925682211031514","mag":"3203376739","pmid":"https://pubmed.ncbi.nlm.nih.gov/34615403","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/10416604"},"language":"en","primary_location":{"id":"doi:10.1177/21925682211031514","doi":"https://doi.org/10.1177/21925682211031514","is_oa":true,"landing_page_url":"https://doi.org/10.1177/21925682211031514","pdf_url":"https://journals.sagepub.com/doi/pdf/10.1177/21925682211031514","source":{"id":"https://openalex.org/S2739034459","display_name":"Global Spine Journal","issn_l":"2192-5682","issn":["2192-5682","2192-5690"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","doyens","jufo-1","ki-jl-1","norway-1","oarl","poland-70","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320017","host_organization_name":"SAGE Publishing","host_organization_lineage":["https://openalex.org/P4310320017"],"host_organization_lineage_names":["SAGE Publishing"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Global Spine Journal","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://journals.sagepub.com/doi/pdf/10.1177/21925682211031514","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5048941461","display_name":"Tsutomu Endo","orcid":"https://orcid.org/0000-0002-2998-2242","observed_orcids":["https://orcid.org/0000-0002-2998-2242"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]},{"id":"https://openalex.org/I4210152938","display_name":"Hakodate Central General Hospital","ror":"https://ror.org/04p7nde68","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152938"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tsutomu Endo","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]},{"raw_affiliation_string":"Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan","institution_ids":["https://openalex.org/I4210152938"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044717046","display_name":"Yoshinao Koike","orcid":"https://orcid.org/0000-0002-5431-5572","observed_orcids":["https://orcid.org/0000-0002-5431-5572"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yoshinao Koike","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066791676","display_name":"Yuichiro Hisada","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuichiro Hisada","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004269034","display_name":"Ryo Fujita","orcid":"https://orcid.org/0000-0002-8392-0122","observed_orcids":["https://orcid.org/0000-0002-8392-0122"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Ryo Fujita","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102930639","display_name":"Ryota Suzuki","orcid":"https://orcid.org/0000-0002-9549-9339","observed_orcids":["https://orcid.org/0000-0002-9549-9339"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Ryota Suzuki","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059197226","display_name":"Masaru Tanaka","orcid":"https://orcid.org/0000-0003-3900-0107","observed_orcids":["https://orcid.org/0000-0003-3900-0107"]},"institutions":[{"id":"https://openalex.org/I4210152938","display_name":"Hakodate Central General Hospital","ror":"https://ror.org/04p7nde68","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152938"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masaru Tanaka","raw_affiliation_strings":["Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan","institution_ids":["https://openalex.org/I4210152938"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082506972","display_name":"Takeru Tsujimoto","orcid":"https://orcid.org/0000-0002-1516-3107","observed_orcids":["https://orcid.org/0000-0002-1516-3107"]},"institutions":[{"id":"https://openalex.org/I4210152938","display_name":"Hakodate Central General Hospital","ror":"https://ror.org/04p7nde68","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152938"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takeru Tsujimoto","raw_affiliation_strings":["Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan","institution_ids":["https://openalex.org/I4210152938"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079781139","display_name":"Yukitoshi Shimamura","orcid":"https://orcid.org/0000-0002-9491-3198","observed_orcids":["https://orcid.org/0000-0002-9491-3198"]},"institutions":[{"id":"https://openalex.org/I4210152938","display_name":"Hakodate Central General Hospital","ror":"https://ror.org/04p7nde68","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152938"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yukitoshi Shimamura","raw_affiliation_strings":["Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan","institution_ids":["https://openalex.org/I4210152938"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101770616","display_name":"Yuichi Hasegawa","orcid":"https://orcid.org/0000-0002-8976-4933","observed_orcids":["https://orcid.org/0000-0002-8976-4933"]},"institutions":[{"id":"https://openalex.org/I4210152938","display_name":"Hakodate Central General Hospital","ror":"https://ror.org/04p7nde68","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152938"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuichi Hasegawa","raw_affiliation_strings":["Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan","institution_ids":["https://openalex.org/I4210152938"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054924134","display_name":"Masahiro Kanayama","orcid":"https://orcid.org/0000-0001-6925-8673","observed_orcids":["https://orcid.org/0000-0001-6925-8673"]},"institutions":[{"id":"https://openalex.org/I4210152938","display_name":"Hakodate Central General Hospital","ror":"https://ror.org/04p7nde68","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152938"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masahiro Kanayama","raw_affiliation_strings":["Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan","institution_ids":["https://openalex.org/I4210152938"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103274246","display_name":"Katsuhisa Yamada","orcid":"https://orcid.org/0000-0002-9841-5890","observed_orcids":["https://orcid.org/0000-0002-9841-5890"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Katsuhisa Yamada","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101570429","display_name":"Akira Iwata","orcid":"https://orcid.org/0000-0002-2376-8827","observed_orcids":["https://orcid.org/0000-0002-2376-8827"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akira Iwata","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5068425868","display_name":"Hideki Sudo","orcid":"https://orcid.org/0000-0002-8635-4648","observed_orcids":["https://orcid.org/0000-0002-8635-4648"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hideki Sudo","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086972702","display_name":"Misaki Ishii","orcid":"https://orcid.org/0009-0003-4918-8964","observed_orcids":["https://orcid.org/0009-0003-4918-8964"]},"institutions":[{"id":"https://openalex.org/I4210152938","display_name":"Hakodate Central General Hospital","ror":"https://ror.org/04p7nde68","country_code":"JP","type":"healthcare","lineage":["https://openalex.org/I4210152938"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Misaki Ishii","raw_affiliation_strings":["Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedics, Hakodate Central General Hospital, Hakodate, Hokkaido, Japan","institution_ids":["https://openalex.org/I4210152938"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027654739","display_name":"Norimasa Iwasaki","orcid":"https://orcid.org/0000-0002-5496-4046","observed_orcids":["https://orcid.org/0000-0002-5496-4046"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Norimasa Iwasaki","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5059984671","display_name":"Masahiko Takahata","orcid":"https://orcid.org/0000-0002-2436-2175","observed_orcids":["https://orcid.org/0000-0002-2436-2175"]},"institutions":[{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Masahiko Takahata","raw_affiliation_strings":["Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan"],"raw_orcid":"https://orcid.org/0000-0002-2436-2175","affiliations":[{"raw_affiliation_string":"Department of Orthopedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan","institution_ids":["https://openalex.org/I205349734"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5059984671"],"corresponding_institution_ids":["https://openalex.org/I205349734"],"apc_list":{"value":2100,"currency":"USD","value_usd":2100},"apc_paid":{"value":2100,"currency":"USD","value_usd":2100},"fwci":3.4176,"has_fulltext":true,"cited_by_count":21,"citation_normalized_percentile":{"value":0.93520182,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"13","issue":"5","first_page":"1325","last_page":"1331"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11518","display_name":"Cervical and Thoracic Myelopathy","score":0.9984999895095825,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T11518","display_name":"Cervical and Thoracic Myelopathy","score":0.9984999895095825,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10238","display_name":"Spine and Intervertebral Disc Pathology","score":0.000699999975040555,"subfield":{"id":"https://openalex.org/subfields/2732","display_name":"Orthopedics and Sports Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12960","display_name":"Heterotopic Ossification and Related Conditions","score":0.00039999998989515007,"subfield":{"id":"https://openalex.org/subfields/2745","display_name":"Rheumatology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/ossified-ligamentum-flavum","display_name":"ossified ligamentum flavum","score":0.9589999914169312},{"id":"https://openalex.org/keywords/obesity","display_name":"obesity","score":0.7699999809265137},{"id":"https://openalex.org/keywords/thoracic-spine","display_name":"thoracic spine","score":0.8180000185966492},{"id":"https://openalex.org/keywords/ossification-of-the-posterior-longitudinal-ligament","display_name":"ossification of the posterior longitudinal ligament","score":0.9359999895095825},{"id":"https://openalex.org/keywords/lesion-severity","display_name":"lesion severity","score":0.6990000009536743},{"id":"https://openalex.org/keywords/body-mass-index","display_name":"body mass index","score":0.9319999814033508},{"id":"https://openalex.org/keywords/computed-tomography","display_name":"computed tomography","score":0.5479999780654907}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9073954224586487},{"id":"https://openalex.org/C2778842504","wikidata":"https://www.wikidata.org/wiki/Q1121544","display_name":"Ossification","level":2,"score":0.6469672322273254},{"id":"https://openalex.org/C511355011","wikidata":"https://www.wikidata.org/wiki/Q12174","display_name":"Obesity","level":2,"score":0.6055263876914978},{"id":"https://openalex.org/C2780221984","wikidata":"https://www.wikidata.org/wiki/Q131191","display_name":"Body mass index","level":2,"score":0.5112788677215576},{"id":"https://openalex.org/C44575665","wikidata":"https://www.wikidata.org/wiki/Q1293405","display_name":"Lumbar","level":2,"score":0.42715680599212646},{"id":"https://openalex.org/C2779753412","wikidata":"https://www.wikidata.org/wiki/Q39888","display_name":"Ligament","level":2,"score":0.4122891426086426},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.35616299510002136},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.354081392288208}],"mesh":[],"locations_count":6,"locations":[{"id":"doi:10.1177/21925682211031514","doi":"https://doi.org/10.1177/21925682211031514","is_oa":true,"landing_page_url":"https://doi.org/10.1177/21925682211031514","pdf_url":"https://journals.sagepub.com/doi/pdf/10.1177/21925682211031514","source":{"id":"https://openalex.org/S2739034459","display_name":"Global Spine Journal","issn_l":"2192-5682","issn":["2192-5682","2192-5690"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","doyens","jufo-1","ki-jl-1","norway-1","oarl","poland-70","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320017","host_organization_name":"SAGE Publishing","host_organization_lineage":["https://openalex.org/P4310320017"],"host_organization_lineage_names":["SAGE Publishing"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Global Spine Journal","raw_type":"journal-article"},{"id":"pmh:oai:pubmedcentral.nih.gov:10416604","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/10416604","pdf_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC10416604/pdf/10.1177_21925682211031514.pdf","source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Global Spine J","raw_type":"Text"},{"id":"pmid:34615403","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/34615403","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Global spine journal","raw_type":"Journal Article"},{"id":"pmh:oai:doaj.org/article:e00ee5917ede4d90bce3772aa3b3be54","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/e00ee5917ede4d90bce3772aa3b3be54","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Global Spine Journal, Vol 13 (2023)","raw_type":"article"},{"id":"pmh:oai:eprints.lib.hokudai.ac.jp:2115/83245","doi":null,"is_oa":false,"landing_page_url":"http://hdl.handle.net/2115/83245","pdf_url":null,"source":{"id":"https://openalex.org/S4306400549","display_name":"Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205349734","host_organization_name":"Hokkaido University","host_organization_lineage":["https://openalex.org/I205349734"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"article"},{"id":"pmh:oai:irdb.nii.ac.jp:01364:0007195635","doi":null,"is_oa":true,"landing_page_url":"https://hdl.handle.net/2115/83245","pdf_url":null,"source":{"id":"https://openalex.org/S7407056385","display_name":"Institutional Repositories DataBase (IRDB)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I184597095","host_organization_name":"National Institute of Informatics","host_organization_lineage":["https://openalex.org/I184597095"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Global Spine Journal","raw_type":"journal article"}],"best_oa_location":{"id":"doi:10.1177/21925682211031514","doi":"https://doi.org/10.1177/21925682211031514","is_oa":true,"landing_page_url":"https://doi.org/10.1177/21925682211031514","pdf_url":"https://journals.sagepub.com/doi/pdf/10.1177/21925682211031514","source":{"id":"https://openalex.org/S2739034459","display_name":"Global Spine Journal","issn_l":"2192-5682","issn":["2192-5682","2192-5690"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","doyens","jufo-1","ki-jl-1","norway-1","oarl","poland-70","russia-white-list-1"],"host_organization":"https://openalex.org/P4310320017","host_organization_name":"SAGE Publishing","host_organization_lineage":["https://openalex.org/P4310320017"],"host_organization_lineage_names":["SAGE Publishing"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Global Spine Journal","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.9922999739646912,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3203376739.pdf","grobid_xml":"https://content.openalex.org/works/W3203376739.grobid-xml"},"referenced_works_count":22,"referenced_works":["https://openalex.org/W1978899490","https://openalex.org/W2014092604","https://openalex.org/W2017633898","https://openalex.org/W2023497668","https://openalex.org/W2026149611","https://openalex.org/W2031275658","https://openalex.org/W2031656444","https://openalex.org/W2038877820","https://openalex.org/W2069279562","https://openalex.org/W2070192573","https://openalex.org/W2130497997","https://openalex.org/W2132394682","https://openalex.org/W2274042013","https://openalex.org/W2313850888","https://openalex.org/W2344903408","https://openalex.org/W2348885841","https://openalex.org/W2398459154","https://openalex.org/W2770760251","https://openalex.org/W2915365511","https://openalex.org/W2923875491","https://openalex.org/W2959625713","https://openalex.org/W3121765254"],"related_works":["https://openalex.org/W4205801589","https://openalex.org/W4315701841","https://openalex.org/W2959625713","https://openalex.org/W7127396096","https://openalex.org/W4286717023","https://openalex.org/W4293176303","https://openalex.org/W7221647109","https://openalex.org/W7117580427","https://openalex.org/W7125834151","https://openalex.org/W2077041348"],"abstract_inverted_index":{"STUDY":[0],"DESIGN:":[1],"Retrospective":[2],"cross-sectional":[3],"study.":[4],"OBJECTIVES:":[5],"There":[6],"is":[7,81,182,199],"insufficient":[8],"data":[9],"on":[10],"the":[11,17,22,26,40,54,68,77,84,141,149,172,190,195,202],"clinical":[12],"features":[13],"of":[14,16,21,28,30,39,70,79,86,91,136,148,159,186,197,204],"ossification":[15,38,105],"ligamentum":[18],"flavum":[19],"(OLF)":[20],"thoracic":[23,73,97,168,191],"spine":[24,192],"and":[25,37,58,75,99,129,157,162,193],"risk":[27],"progression":[29],"ossified":[31],"lesions.":[32],"The":[33,134],"link":[34,55],"between":[35,56],"obesity":[36,57,71,181],"posterior":[41],"longitudinal":[42],"ligament":[43,104],"(OPLL),":[44],"which":[45],"frequently":[46],"coexists":[47],"with":[48,83,96,167,201],"OLF,":[49],"has":[50,60],"been":[51,62],"demonstrated.":[52],"However,":[53],"OLF":[59,74,80,98,110,119,125,131,137,142,164,169,188,198],"not":[61],"recognized.":[63],"We":[64],"aimed":[65],"to":[66],"determine":[67],"prevalence":[69],"in":[72,171,189],"whether":[76],"severity":[78,135,196],"associated":[82,166,200],"degree":[85,203],"obesity.":[87,205],"METHODS:":[88],"A":[89],"total":[90],"204":[92],"symptomatic":[93],"Japanese":[94],"subjects":[95,101,111],"136":[100],"without":[102],"spinal":[103],"as":[106],"controls":[107],"were":[108,112,165],"included.":[109],"divided":[113],"into":[114],"3":[115],"groups:":[116],"1)":[117],"localized":[118],"(OLF":[120,126],"<2-intervertebral":[121],"regions);":[122,128],"2)":[123],"multilevel":[124,187],"\u22653-intervertebral":[127],"3)":[130],"+":[132],"OPLL.":[133],"was":[138],"quantified":[139],"using":[140,144],"index":[143,170],"computed":[145],"tomography":[146],"imaging":[147],"entire":[150],"spine.":[151],"RESULTS:":[152],"<":[153],"0.01).":[154],"BMI,":[155],"age,":[156],"coexistence":[158],"cervical":[160],"OPLL":[161],"lumbar":[163],"multiple":[173],"regression":[174],"analysis.":[175],"CONCLUSIONS:":[176],"Our":[177],"findings":[178],"demonstrated":[179],"that":[180,194],"a":[183],"distinct":[184],"feature":[185]},"counts_by_year":[{"year":2026,"cited_by_count":5},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":9}],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2021-10-11T00:00:00"}
