{"id":"https://openalex.org/W2162251663","doi":"https://doi.org/10.2106/00004623-198870100-00006","title":"The forty-five-degree posteroanterior flexion weight-bearing radiograph of the knee.","display_name":"The forty-five-degree posteroanterior flexion weight-bearing radiograph of the knee.","publication_year":1988,"publication_date":"1988-12-01","ids":{"openalex":"https://openalex.org/W2162251663","doi":"https://doi.org/10.2106/00004623-198870100-00006","mag":"2162251663","pmid":"https://pubmed.ncbi.nlm.nih.gov/3198672"},"language":"en","primary_location":{"id":"doi:10.2106/00004623-198870100-00006","doi":"https://doi.org/10.2106/00004623-198870100-00006","is_oa":false,"landing_page_url":"https://doi.org/10.2106/00004623-198870100-00006","pdf_url":null,"source":{"id":"https://openalex.org/S128848949","display_name":"Journal of Bone and Joint Surgery","issn_l":"0021-9355","issn":["0021-9355","1058-2436","1535-1386"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-a","doyens","jufo-3","ki-jl-2","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310318547","host_organization_name":"Wolters Kluwer","host_organization_lineage":["https://openalex.org/P4310318547"],"host_organization_lineage_names":["Wolters Kluwer"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of Bone & Joint Surgery","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5110879763","display_name":"T. D. Rosenberg","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"T D Rosenberg","raw_affiliation_strings":["Salt Lake City Knee and Sports Medicine, Utah 84103"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Salt Lake City Knee and Sports Medicine, Utah 84103","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000666161","display_name":"Lonnie E. Paulos","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"L E Paulos","raw_affiliation_strings":["Salt Lake City Knee and Sports Medicine, Utah 84103"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Salt Lake City Knee and Sports Medicine, Utah 84103","institution_ids":[]}]},{"author_position":"middle","author":{"id":null,"display_name":"R D Parker","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R D Parker","raw_affiliation_strings":["Salt Lake City Knee and Sports Medicine, Utah 84103"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Salt Lake City Knee and Sports Medicine, Utah 84103","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006904530","display_name":"David B. Coward","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"D B Coward","raw_affiliation_strings":["Salt Lake City Knee and Sports Medicine, Utah 84103"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Salt Lake City Knee and Sports Medicine, Utah 84103","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021208052","display_name":"S M Scott","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S M Scott","raw_affiliation_strings":["Salt Lake City Knee and Sports Medicine, Utah 84103"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Salt Lake City Knee and Sports Medicine, Utah 84103","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.4368,"has_fulltext":false,"cited_by_count":628,"citation_normalized_percentile":{"value":0.82397525,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"70","issue":"10","first_page":"1479","last_page":"1483"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10105","display_name":"Osteoarthritis Treatment and Mechanisms","score":0.5536999702453613,"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"}},"topics":[{"id":"https://openalex.org/T10105","display_name":"Osteoarthritis Treatment and Mechanisms","score":0.5536999702453613,"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"}},{"id":"https://openalex.org/T10442","display_name":"Knee injuries and reconstruction techniques","score":0.34130001068115234,"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/T11218","display_name":"Hip disorders and treatments","score":0.01810000091791153,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/knee-joint","display_name":"knee joint","score":0.3070000112056732},{"id":"https://openalex.org/keywords/weight-bearing-radiographs","display_name":"weight-bearing radiographs","score":0.7990000247955322},{"id":"https://openalex.org/keywords/knee-osteoarthritis","display_name":"knee osteoarthritis","score":0.7770000100135803},{"id":"https://openalex.org/keywords/cartilage-degeneration","display_name":"cartilage degeneration","score":0.7210000157356262},{"id":"https://openalex.org/keywords/diagnostic-accuracy","display_name":"diagnostic accuracy","score":0.8579999804496765},{"id":"https://openalex.org/keywords/anteroposterior-radiograph","display_name":"anteroposterior radiograph","score":0.7390000224113464},{"id":"https://openalex.org/keywords/intraoperative-correlation","display_name":"intraoperative correlation","score":0.42500001192092896}],"concepts":[{"id":"https://openalex.org/C36454342","wikidata":"https://www.wikidata.org/wiki/Q245341","display_name":"Radiography","level":2,"score":0.8968618512153625},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.8570383787155151},{"id":"https://openalex.org/C2780204347","wikidata":"https://www.wikidata.org/wiki/Q17126173","display_name":"Weight-bearing","level":2,"score":0.6890222430229187},{"id":"https://openalex.org/C2781156865","wikidata":"https://www.wikidata.org/wiki/Q827023","display_name":"Lesion","level":2,"score":0.5521791577339172},{"id":"https://openalex.org/C2776164576","wikidata":"https://www.wikidata.org/wiki/Q62736","display_name":"Osteoarthritis","level":3,"score":0.43258556723594666},{"id":"https://openalex.org/C2909674901","wikidata":"https://www.wikidata.org/wiki/Q938793","display_name":"Cartilage damage","level":5,"score":0.43197494745254517},{"id":"https://openalex.org/C29694066","wikidata":"https://www.wikidata.org/wiki/Q118301","display_name":"Orthodontics","level":1,"score":0.4054466784000397},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.40125447511672974},{"id":"https://openalex.org/C2989005","wikidata":"https://www.wikidata.org/wiki/Q214963","display_name":"Nuclear medicine","level":1,"score":0.35598063468933105},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.2643192410469055},{"id":"https://openalex.org/C3020332539","wikidata":"https://www.wikidata.org/wiki/Q2014564","display_name":"Articular cartilage","level":4,"score":0.18683865666389465},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.06933441758155823},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007592","descriptor_name":"Joint Diseases","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":false},{"descriptor_ui":"D007592","descriptor_name":"Joint Diseases","qualifier_ui":"Q000601","qualifier_name":"surgery","is_major_topic":false},{"descriptor_ui":"D007719","descriptor_name":"Knee Joint","qualifier_ui":"Q000000981","qualifier_name":"diagnostic imaging","is_major_topic":true},{"descriptor_ui":"D007719","descriptor_name":"Knee Joint","qualifier_ui":"Q000601","qualifier_name":"surgery","is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008722","descriptor_name":"Methods","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011859","descriptor_name":"Radiography","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.2106/00004623-198870100-00006","doi":"https://doi.org/10.2106/00004623-198870100-00006","is_oa":false,"landing_page_url":"https://doi.org/10.2106/00004623-198870100-00006","pdf_url":null,"source":{"id":"https://openalex.org/S128848949","display_name":"Journal of Bone and Joint Surgery","issn_l":"0021-9355","issn":["0021-9355","1058-2436","1535-1386"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-a","doyens","jufo-3","ki-jl-2","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310318547","host_organization_name":"Wolters Kluwer","host_organization_lineage":["https://openalex.org/P4310318547"],"host_organization_lineage_names":["Wolters Kluwer"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Journal of Bone & Joint Surgery","raw_type":"journal-article"},{"id":"pmid:3198672","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/3198672","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":"The Journal of bone and joint surgery. American volume","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being","score":0.9391000270843506}],"sustainable_development_goals_aurora":[{"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being","score":0.7699999809265137}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1981911000","https://openalex.org/W1592403859","https://openalex.org/W2374247704","https://openalex.org/W2989260151","https://openalex.org/W7096711552","https://openalex.org/W2082551310","https://openalex.org/W1950219250","https://openalex.org/W2508018073","https://openalex.org/W2027989011","https://openalex.org/W2326903728"],"abstract_inverted_index":{"Posteroanterior":[0],"weight-bearing":[1,72,109],"radiographs,":[2],"made":[3,76],"with":[4,14,59,77],"the":[5,34,55,60,66,70,78,106],"knee":[6,79],"in":[7,29,80],"45":[8,81],"degrees":[9,82],"of":[10,33,37,46,54,83],"flexion,":[11],"were":[12,75,85],"compared":[13],"conventional":[15,107],"radiographs":[16,67,73],"for":[17,24],"fifty-five":[18],"patients":[19],"who":[20],"had":[21],"surgical":[22],"treatment":[23],"a":[25],"lesion":[26],"causing":[27],"pain":[28],"one":[30],"knee.":[31],"Narrowing":[32],"cartilage":[35],"space":[36],"two":[38],"millimeters":[39],"or":[40,51],"more":[41,86,92,101],"was":[42,63],"defined":[43],"as":[44],"indicative":[45],"major":[47],"degeneration":[48,58],"(grade":[49],"III":[50],"IV).":[52],"Comparison":[53],"intraoperatively":[56],"observed":[57],"narrowing":[61],"that":[62,69,74],"seen":[64],"on":[65],"revealed":[68],"posteroanterior":[71],"flexion":[84],"accurate":[87],"(p":[88,96],"less":[89,97],"than":[90,98,105],"0.01),":[91,99],"specific":[93],"(no":[94],"false-positives)":[95],"and":[100],"sensitive":[102],"(fewer":[103],"false-negatives)":[104],"extension":[108],"anteroposterior":[110],"radiographs.":[111]},"counts_by_year":[{"year":2026,"cited_by_count":8},{"year":2025,"cited_by_count":14},{"year":2024,"cited_by_count":15},{"year":2023,"cited_by_count":12},{"year":2022,"cited_by_count":20},{"year":2021,"cited_by_count":29},{"year":2020,"cited_by_count":10},{"year":2019,"cited_by_count":15},{"year":2018,"cited_by_count":15},{"year":2017,"cited_by_count":18},{"year":2016,"cited_by_count":26},{"year":2015,"cited_by_count":17},{"year":2014,"cited_by_count":19},{"year":2013,"cited_by_count":23},{"year":2012,"cited_by_count":29}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-06-24T00:00:00"}