{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T08:05:04Z","timestamp":1790323504235,"version":"4.1.0"},"reference-count":44,"publisher":"Elsevier BV","issue":"3","license":[{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2026,5,16]],"date-time":"2026-05-16T00:00:00Z","timestamp":1778889600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100016626","name":"Japanese Orthopaedic Association","doi-asserted-by":"publisher","award":["2023-2"],"award-info":[{"award-number":["2023-2"]}],"id":[{"id":"10.13039\/100016626","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Osteoporosis and Sarcopenia"],"published-print":{"date-parts":[[2026,9]]},"DOI":"10.1016\/j.afos.2026.05.001","type":"journal-article","created":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T03:41:35Z","timestamp":1780026095000},"page":"40-47","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":1,"special_numbering":"S","title":["Deep learning\u2013based quantification of muscle volume and attenuation and their associations with preinjury ambulatory status in patients with hip fractures"],"prefix":"10.1016","volume":"12","author":[{"given":"Tomoki","family":"Asano","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9245-1743","authenticated-orcid":false,"given":"Keisuke","family":"Uemura","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sotaro","family":"Kono","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryo","family":"Higuchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Gu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hirokazu","family":"Mae","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tetsuro","family":"Tani","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazuma","family":"Takashima","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tatsuhiko","family":"Kutsuna","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoshito","family":"Otake","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masaki","family":"Takao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5107-8209","authenticated-orcid":false,"given":"Seiji","family":"Okada","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hidetoshi","family":"Hamada","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.afos.2026.05.001_bib1","doi-asserted-by":"crossref","first-page":"e321","DOI":"10.1016\/S2468-2667(25)00044-1","article-title":"Three decades of population health changes in Japan, 1990\u20132021: a subnational analysis for the Global Burden of Disease Study 2021","volume":"10","author":"Nomura","year":"2025","journal-title":"Lancet Public Health"},{"key":"10.1016\/j.afos.2026.05.001_bib2","doi-asserted-by":"crossref","first-page":"1279","DOI":"10.1056\/NEJM199710303371806","article-title":"Falls, injuries due to falls, and the risk of admission to a nursing home","volume":"337","author":"Tinetti","year":"1997","journal-title":"N Engl J Med"},{"key":"10.1016\/j.afos.2026.05.001_bib3","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1186\/1471-2318-14-9","article-title":"Effects of impairment in activities of daily living on predicting mortality following hip fracture surgery in studies using administrative healthcare databases","volume":"14","author":"Seitz","year":"2014","journal-title":"BMC Geriatr"},{"key":"10.1016\/j.afos.2026.05.001_bib4","doi-asserted-by":"crossref","first-page":"412","DOI":"10.1093\/ageing\/afq034","article-title":"Sarcopenia: european consensus on definition and diagnosis","volume":"39","author":"Cruz-Jentoft","year":"2010","journal-title":"Age Ageing"},{"key":"10.1016\/j.afos.2026.05.001_bib5","doi-asserted-by":"crossref","first-page":"2669","DOI":"10.1113\/JP279595","article-title":"Infiltration of intramuscular adipose tissue impairs skeletal muscle contraction","volume":"598","author":"Biltz","year":"2020","journal-title":"J Physiol"},{"key":"10.1016\/j.afos.2026.05.001_bib6","doi-asserted-by":"crossref","first-page":"2164","DOI":"10.1038\/s43587-025-01004-y","article-title":"A focus shift from sarcopenia to muscle health in the Asian working group for sarcopenia 2025 consensus update","volume":"5","author":"Chen","year":"2025","journal-title":"Nat Aging"},{"key":"10.1016\/j.afos.2026.05.001_bib7","doi-asserted-by":"crossref","first-page":"2445","DOI":"10.1093\/gerona\/glac112","article-title":"Thigh muscle composition and its relationship to functional recovery post hip fracture over time and between sexes","volume":"77","author":"Eastlack","year":"2022","journal-title":"J Gerontol A Biol Sci Med Sci"},{"key":"10.1016\/j.afos.2026.05.001_bib8","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1111\/j.1749-6632.2000.tb06416.x","article-title":"Composition of skeletal muscle evaluated with computed tomography","volume":"904","author":"Goodpaster","year":"2000","journal-title":"Ann N Y Acad Sci"},{"key":"10.1016\/j.afos.2026.05.001_bib9","doi-asserted-by":"crossref","first-page":"423","DOI":"10.1186\/s13018-025-05828-7","article-title":"Very high prevalence of osteosarcopenia in hip fracture patients: risk and protective factors","volume":"20","author":"Wong","year":"2025","journal-title":"J Orthop Surg Res"},{"key":"10.1016\/j.afos.2026.05.001_bib10","doi-asserted-by":"crossref","first-page":"1569","DOI":"10.1007\/s00198-018-4490-0","article-title":"Population-based study of age- and sex-related differences in muscle density and size in thoracic and lumbar spine: the framingham study","volume":"29","author":"Johannesdottir","year":"2018","journal-title":"Osteoporos Int"},{"key":"10.1016\/j.afos.2026.05.001_bib11","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1007\/s00774-013-0447-8","article-title":"Diagnostic criteria for primary osteoporosis: year 2012 revision","volume":"31","author":"Soen","year":"2013","journal-title":"J Bone Miner Metabol"},{"key":"10.1016\/j.afos.2026.05.001_bib12","doi-asserted-by":"crossref","first-page":"1030","DOI":"10.1109\/TMI.2019.2940555","article-title":"Automated muscle segmentation from clinical CT using bayesian U-Net for personalized musculoskeletal modeling","volume":"39","author":"Hiasa","year":"2020","journal-title":"IEEE Trans Med Imag"},{"key":"10.1016\/j.afos.2026.05.001_bib13","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1038\/s41598-024-83793-7","article-title":"Validation of musculoskeletal segmentation model with uncertainty estimation for bone and muscle assessment in hip-to-knee clinical CT images","volume":"15","author":"Soufi","year":"2025","journal-title":"Sci Rep"},{"key":"10.1016\/j.afos.2026.05.001_bib14","doi-asserted-by":"crossref","first-page":"703","DOI":"10.1007\/s11548-025-03321-4","article-title":"Volume and quality of the gluteal muscles are associated with early physical function after total hip arthroplasty","volume":"20","author":"Iwasa","year":"2025","journal-title":"Int J Comput Assist Radiol Surg"},{"key":"10.1016\/j.afos.2026.05.001_bib15","doi-asserted-by":"crossref","first-page":"104","DOI":"10.1152\/jappl.2000.89.1.104","article-title":"Skeletal muscle attenuation determined by computed tomography is associated with skeletal muscle lipid content","volume":"89","author":"Goodpaster","year":"2000","journal-title":"J Appl Physiol"},{"key":"10.1016\/j.afos.2026.05.001_bib16","doi-asserted-by":"crossref","first-page":"590","DOI":"10.1302\/2046-3758.129.BJR-2023-0115.R1","article-title":"Development and validation of an open-source tool for opportunistic screening of osteoporosis from hip CT images: a multicentre study of 978 hips","volume":"12","author":"Uemura","year":"2023","journal-title":"Bone Joint Res"},{"key":"10.1016\/j.afos.2026.05.001_bib17","doi-asserted-by":"crossref","first-page":"1855","DOI":"10.1007\/s11548-021-02345-w","article-title":"Automated segmentation of an intensity calibration phantom in clinical CT images using a convolutional neural network","volume":"16","author":"Uemura","year":"2021","journal-title":"Int J Comput Assist Radiol Surg"},{"key":"10.1016\/j.afos.2026.05.001_bib18","doi-asserted-by":"crossref","first-page":"751","DOI":"10.2106\/00004623-199405000-00018","article-title":"Functional recovery after fracture of the hip","volume":"76","author":"Koval","year":"1994","journal-title":"J Bone Joint Surg Am"},{"key":"10.1016\/j.afos.2026.05.001_bib19","first-page":"150","article-title":"Ambulatory ability after hip fracture: a prospective study in geriatric patients","volume":"310","author":"Koval","year":"1995","journal-title":"Clin Orthop Relat Res"},{"key":"10.1016\/j.afos.2026.05.001_bib20","doi-asserted-by":"crossref","first-page":"777","DOI":"10.1093\/ajcn\/82.4.777","article-title":"Geriatric nutritional risk index: a new index for evaluating at-risk elderly medical patients","volume":"82","author":"Bouillanne","year":"2005","journal-title":"Am J Clin Nutr"},{"key":"10.1016\/j.afos.2026.05.001_bib21","doi-asserted-by":"crossref","first-page":"676","DOI":"10.1093\/aje\/kwq433","article-title":"Updating and validating the charlson comorbidity index and score for risk adjustment in hospital discharge abstracts using data from 6 countries","volume":"173","author":"Quan","year":"2011","journal-title":"Am J Epidemiol"},{"key":"10.1016\/j.afos.2026.05.001_bib22","doi-asserted-by":"crossref","first-page":"3688","DOI":"10.3390\/nu13113688","article-title":"Utility of geriatric nutritional risk index in patients with chronic kidney disease: a mini-review","volume":"13","author":"Nakagawa","year":"2021","journal-title":"Nutrients"},{"key":"10.1016\/j.afos.2026.05.001_bib23","doi-asserted-by":"crossref","first-page":"70","DOI":"10.1016\/j.ijid.2022.08.006","article-title":"Effectiveness of fluoroquinolone antimicrobials in addition to tetracyclines for Japanese spotted fever: a retrospective analysis using a national inpatient database","volume":"123","author":"Kutsuna","year":"2022","journal-title":"Int J Infect Dis"},{"key":"10.1016\/j.afos.2026.05.001_bib24","doi-asserted-by":"crossref","first-page":"431","DOI":"10.1007\/s00264-009-0803-4","article-title":"Functional outcome, mortality and in-hospital complications of operative treatment in elderly patients with hip fractures in the developing world","volume":"34","author":"Sepah","year":"2010","journal-title":"Int Orthop"},{"key":"10.1016\/j.afos.2026.05.001_bib25","doi-asserted-by":"crossref","first-page":"1611","DOI":"10.1007\/s00402-020-03345-2","article-title":"Reoperation rate, mortality and ambulatory ability after internal fixation versus hemiarthroplasty for unstable intertrochanteric fractures in elderly patients: a study on Korean hip fracture registry","volume":"140","author":"Kim","year":"2020","journal-title":"Arch Orthop Trauma Surg"},{"key":"10.1016\/j.afos.2026.05.001_bib26","doi-asserted-by":"crossref","first-page":"906","DOI":"10.1016\/j.arth.2015.10.036","article-title":"Volume increases of the gluteus maximus, gluteus medius, and thigh muscles after hip arthroplasty","volume":"31","author":"Uemura","year":"2016","journal-title":"J Arthroplast"},{"key":"10.1016\/j.afos.2026.05.001_bib27","doi-asserted-by":"crossref","first-page":"1073","DOI":"10.1007\/s00264-025-06457-9","article-title":"Fatty infiltration of periarticular muscles in patients with osteonecrosis of the femoral head","volume":"49","author":"Otaka","year":"2025","journal-title":"Int Orthop"},{"key":"10.1016\/j.afos.2026.05.001_bib28","doi-asserted-by":"crossref","DOI":"10.1093\/jbmrpl\/ziaf169","article-title":"Association of computed tomography (CT)-derived muscle area and density at multiple sites with 10-year fracture risk in older men","volume":"10","author":"Hetherington-Rauth","year":"2026","journal-title":"JBMR Plus"},{"key":"10.1016\/j.afos.2026.05.001_bib29","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1016\/j.jos.2019.02.004","article-title":"Validation study of the CT-based cross-sectional evaluation of muscular atrophy and fatty degeneration around the pelvis and the femur","volume":"25","author":"Ogawa","year":"2020","journal-title":"J Orthop Sci"},{"key":"10.1016\/j.afos.2026.05.001_bib30","doi-asserted-by":"crossref","first-page":"282","DOI":"10.1186\/s13244-025-02175-3","article-title":"Fatty infiltration of the gluteus medius and minimus muscles: volumetric analysis of both hips in patients with unilateral greater trochanteric pain syndrome using 2-point-Dixon MRI","volume":"16","author":"Kajdi","year":"2025","journal-title":"Insights Imaging"},{"issue":"Pt B","key":"10.1016\/j.afos.2026.05.001_bib31","article-title":"Individual thigh muscle and proximal femoral features predict displacement in femoral neck fractures: an AI-driven CT analysis","volume":"192","author":"Yoo","year":"2025","journal-title":"Comput Biol Med"},{"key":"10.1016\/j.afos.2026.05.001_bib32","doi-asserted-by":"crossref","first-page":"620","DOI":"10.1007\/s00774-009-0080-8","article-title":"Prevalence of knee osteoarthritis, lumbar spondylosis, and osteoporosis in Japanese men and women: the research on osteoarthritis\/osteoporosis against disability study","volume":"27","author":"Yoshimura","year":"2009","journal-title":"J Bone Miner Metabol"},{"key":"10.1016\/j.afos.2026.05.001_bib33","doi-asserted-by":"crossref","first-page":"829","DOI":"10.1007\/s00774-022-01352-4","article-title":"Trends in osteoporosis prevalence over a 10-year period in Japan: the ROAD study 2005\u20132015","volume":"40","author":"Yoshimura","year":"2022","journal-title":"J Bone Miner Metabol"},{"key":"10.1016\/j.afos.2026.05.001_bib34","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1111\/apha.12224","article-title":"Measurement of skeletal muscle radiation attenuation and basis of its biological variation","volume":"210","author":"Aubrey","year":"2014","journal-title":"Acta Physiol"},{"key":"10.1016\/j.afos.2026.05.001_bib35","doi-asserted-by":"crossref","first-page":"963","DOI":"10.3389\/fphys.2020.00963","article-title":"Myosteatosis in the context of skeletal muscle function deficit: an interdisciplinary workshop at the National Institute on Aging","volume":"11","author":"Correa-de-Araujo","year":"2020","journal-title":"Front Physiol"},{"key":"10.1016\/j.afos.2026.05.001_bib36","doi-asserted-by":"crossref","first-page":"115","DOI":"10.1093\/gerona\/glaa161","article-title":"The relationship between intermuscular fat and physical performance is moderated by muscle area in older adults","volume":"76","author":"Farsijani","year":"2021","journal-title":"J Gerontol A Biol Sci Med Sci"},{"key":"10.1016\/j.afos.2026.05.001_bib37","doi-asserted-by":"crossref","DOI":"10.1016\/j.jcot.2023.102163","article-title":"Pre-fracture ambulation capacity, Charlson comorbidity index, and dementia as predictors of functional impairment after bipolar hemiarthroplasty for unstable intertrochanteric fracture. A retrospective analysis in 158 octogenarian patients","volume":"40","author":"Garabano","year":"2023","journal-title":"J Clin Orthop Trauma"},{"key":"10.1016\/j.afos.2026.05.001_bib38","doi-asserted-by":"crossref","DOI":"10.1016\/j.archger.2020.104009","article-title":"Body mass index and recovery of activities of daily living in older patients with femoral fracture: an analysis of a national inpatient database in Japan","volume":"87","author":"Nishioka","year":"2020","journal-title":"Arch Gerontol Geriatr"},{"key":"10.1016\/j.afos.2026.05.001_bib39","doi-asserted-by":"crossref","first-page":"897","DOI":"10.1046\/j.1532-5415.2002.50217.x","article-title":"Leg muscle mass and composition in relation to lower extremity performance in men and women aged 70 to 79: the health, aging and body composition Study","volume":"50","author":"Visser","year":"2002","journal-title":"J Am Geriatr Soc"},{"key":"10.1016\/j.afos.2026.05.001_bib40","doi-asserted-by":"crossref","first-page":"324","DOI":"10.1093\/gerona\/60.3.324","article-title":"Muscle Mass, muscle strength, and muscle fat infiltration as predictors of incident mobility limitations in well-functioning older persons","volume":"60","author":"Visser","year":"2005","journal-title":"J Gerontol A Biol Sci Med Sci"},{"key":"10.1016\/j.afos.2026.05.001_bib41","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1007\/s00223-015-0018-1","article-title":"Fat infiltration in the leg is associated with bone geometry and physical function in healthy older women","volume":"97","author":"Lorbergs","year":"2015","journal-title":"Calcif Tissue Int"},{"key":"10.1016\/j.afos.2026.05.001_bib42","first-page":"330","article-title":"Assessment of adult malnutrition and prognosis with bioelectrical impedance analysis: phase angle and impedance ratio","volume":"20","author":"Lukaski","year":"2017","journal-title":"Curr Opin Clin Nutr Metab Care"},{"key":"10.1016\/j.afos.2026.05.001_bib43","doi-asserted-by":"crossref","first-page":"180","DOI":"10.1002\/jcsm.12860","article-title":"Phase angle from bioelectrical impedance analysis is a useful indicator of muscle quality","volume":"13","author":"Akamatsu","year":"2022","journal-title":"J Cachexia Sarcopenia Muscle"},{"key":"10.1016\/j.afos.2026.05.001_bib44","doi-asserted-by":"crossref","first-page":"1018","DOI":"10.1007\/s001980070022","article-title":"Femoral neck and intertrochanteric fractures have different risk factors: a prospective study","volume":"11","author":"Fox","year":"2000","journal-title":"Osteoporos Int"}],"container-title":["Osteoporosis and Sarcopenia"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2405525526000257?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2405525526000257?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T07:36:56Z","timestamp":1790321816000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S2405525526000257"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9]]},"references-count":44,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,9]]}},"alternative-id":["S2405525526000257"],"URL":"https:\/\/doi.org\/10.1016\/j.afos.2026.05.001","relation":{},"ISSN":["2405-5255"],"issn-type":[{"value":"2405-5255","type":"print"}],"subject":[],"published":{"date-parts":[[2026,9]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Deep learning\u2013based quantification of muscle volume and attenuation and their associations with preinjury ambulatory status in patients with hip fractures","name":"articletitle","label":"Article Title"},{"value":"Osteoporosis and Sarcopenia","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.afos.2026.05.001","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2026 The Korean Society of Osteoporosis. Publishing services by Elsevier B.V.","name":"copyright","label":"Copyright"}]}}