{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T22:01:31Z","timestamp":1779400891098,"version":"3.53.1"},"reference-count":43,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2021,7,28]],"date-time":"2021-07-28T00:00:00Z","timestamp":1627430400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2021,7,28]],"date-time":"2021-07-28T00:00:00Z","timestamp":1627430400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Adv Rheumatol"],"published-print":{"date-parts":[[2021,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Background<\/jats:title>\n                <jats:p>Nail psoriasis occurs frequently in patients with psoriatic disease, it can lead to functional impairment, pain, discomfort, decreased quality of life and can also be a predictor for the development of arthritis. Early recognition of this condition can provide early and effective treatment and prevent structural impairment. This study aims to identify nail ultrasonographic characteristics in three groups: psoriasis (PsO), psoriatic arthritis (PsA) and controls patients, to determine if the ultrasonography (US) can identify early signs of nail psoriatic impairment or local inflammation. We conducted nail US to determine nail matrix resistance index (NMRI), nail bed resistance index (NBRI), and power Doppler (PD) and grayscale (GS) parameters in these 3 groups.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>Single-center, cross-sectional study. GS, PD, and spectral doppler images of bilateral 2nd and 3rd fingernails were acquired from 35 PsO, 31 PsA, and 35 controls patients. An US equipment with an 18\u2009MHz linear transducer for GS and 8.0\u2009MHz for PD was used. PD, NMRI, NBRI, nail plate thickness (NPT), nail bed thickness (NBT), nail matrix thickness (NMT), and morphostructural characteristics of the trilaminar structure (TS) were evaluated in saved images, blind<jats:bold>.<\/jats:bold><\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Mean NMRI and NBRI did not differ between groups. Linear regression analysis detected no relationships between PsO or PsA and NMRI or NBRI. Nail PD grade did not differ between groups. Type I and IV TS changes were more frequent in PsO; types II and III changes were more frequent in PsA (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). NPT was greater in PsA and PsO groups than controls: PsA 0.73\u2009\u00b1\u20090.14\u2009mm, PsO 0.72\u2009\u00b1\u20090.15\u2009mm, Controls 0.67\u2009\u00b1\u20090.10\u2009mm (<jats:italic>p<\/jats:italic>\u2009=\u20090.001).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Echographic TS characteristics of the nail plate and NPT evaluated by GS are useful and can distinguish PsO and PsA nails from controls. NMRI, NBRI, and US nail microcirculation parameters could not distinguish psoriatic nails.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Trial registration<\/jats:title>\n                <jats:p>72762317.4.0000.5327 (Certificate of Presentation of Ethical Appreciation \u2013 CAAE -\u00a0Plataforma Brasil)\u00a0Avaiable in\u00a0<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/plataformabrasil.saude.gov.br\/login.jsf\">https:\/\/plataformabrasil.saude.gov.br\/login.jsf<\/jats:ext-link>.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s42358-021-00207-2","type":"journal-article","created":{"date-parts":[[2021,7,28]],"date-time":"2021-07-28T07:03:03Z","timestamp":1627455783000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Ultrasonographic and resistance index evaluation of nails in psoriatic arthritis, psoriasis, and control groups: a cross-sectional study"],"prefix":"10.1186","volume":"61","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9682-0000","authenticated-orcid":false,"given":"Samanta Daiana","family":"De Rossi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 Alexandre","family":"Mendon\u00e7a","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Penelope Ester","family":"Palominos","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charles Lubianca","family":"Kohem","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tania Ferreira","family":"Cestari","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rafael Mendon\u00e7a","family":"da Silva Chakr","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,7,28]]},"reference":[{"issue":"6","key":"207_CR1","doi-asserted-by":"publisher","first-page":"375","DOI":"10.2165\/11597000-000000000-00000","volume":"13","author":"ES Tan","year":"2012","unstructured":"Tan ES, Chong WS, Tey HL. Nail psoriasis: a review. Am J Clin Dermatol. 2012;13(6):375\u201388. https:\/\/doi.org\/10.2165\/11597000-000000000-00000.","journal-title":"Am J Clin Dermatol"},{"issue":"2","key":"207_CR2","doi-asserted-by":"publisher","first-page":"312","DOI":"10.1590\/abd1806-4841.20142633","volume":"89","author":"KR Schons","year":"2014","unstructured":"Schons KR, Knob CF, Murussi N, Beber AA, Neumaier W, Monticielo OA. Nail psoriasis: a review of the literature. An Bras Dermatol. 2014;89(2):312\u20137. https:\/\/doi.org\/10.1590\/abd1806-4841.20142633.","journal-title":"An Bras Dermatol"},{"issue":"1","key":"207_CR3","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1016\/j.jaad.2005.07.073","volume":"57","author":"MM Jiaravuthisan","year":"2007","unstructured":"Jiaravuthisan MM, Sasseville D, Vender RB, Murphy F, Muhn C. Psoriasis of the nail: anatomy, pathology, clinical presentation, and a review of the literature on therapy. J Am Acad Dermatol. 2007;57(1):1\u201327. https:\/\/doi.org\/10.1016\/j.jaad.2005.07.073.","journal-title":"J Am Acad Dermatol"},{"issue":"Suppl 1","key":"207_CR4","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1159\/000316169","volume":"221","author":"R Baran","year":"2010","unstructured":"Baran R. The burden of nail psoriasis: an introduction. Dermatology. 2010;221(Suppl 1):1\u20135. https:\/\/doi.org\/10.1159\/000316169.","journal-title":"Dermatology."},{"issue":"6","key":"207_CR5","doi-asserted-by":"publisher","first-page":"452","DOI":"10.1016\/j.ad.2015.02.005","volume":"106","author":"I Raposo","year":"2015","unstructured":"Raposo I, Torres T. Nail psoriasis as a predictor of the development of psoriatic arthritis. Actas Dermosifiliogr. 2015;106(6):452\u20137. https:\/\/doi.org\/10.1016\/j.ad.2015.02.005.","journal-title":"Actas Dermosifiliogr"},{"issue":"1","key":"207_CR6","doi-asserted-by":"publisher","first-page":"41","DOI":"10.1186\/s42358-019-0081-9","volume":"59","author":"JA Mendon\u00e7a","year":"2019","unstructured":"Mendon\u00e7a JA, Aydin SZ, D'Agostino MA. The use of ultrasonography in the diagnosis of nail disease among patients with psoriasis and psoriatic arthritis: a systematic review. Adv Rheumatol. 2019;59(1):41. https:\/\/doi.org\/10.1186\/s42358-019-0081-9.","journal-title":"Adv Rheumatol"},{"issue":"3","key":"207_CR7","doi-asserted-by":"publisher","first-page":"181","DOI":"10.1007\/s40477-017-0253-6","volume":"20","author":"F Aluja Jaramillo","year":"2017","unstructured":"Aluja Jaramillo F, Quias\u00faa Mej\u00eda DC, Mart\u00ednez Ord\u00faz HM, Gonz\u00e1lez AC. Nail unit ultrasound: a complete guide of the nail diseases. J Ultrasound. 2017;20(3):181\u201392. https:\/\/doi.org\/10.1007\/s40477-017-0253-6.","journal-title":"J Ultrasound"},{"key":"207_CR8","doi-asserted-by":"publisher","first-page":"06","DOI":"10.4067\/S0717-93082004000100003","volume":"10","author":"CX Wortsman","year":"2004","unstructured":"Wortsman CX, Holm EA, Jemec GB, Gniadecka M, Wulf HC. Ultrasonido de Alta Resolucion (15MHz) em el estudio de la u\u00f1a psoriatica. Rev Chil Radiol. 2004;10:06\u201311.","journal-title":"Rev Chil Radiol"},{"issue":"9","key":"207_CR9","doi-asserted-by":"publisher","first-page":"727","DOI":"10.1007\/s00403-012-1274-9","volume":"304","author":"P Gisondi","year":"2012","unstructured":"Gisondi P, Idolazzi L, Girolomoni G. Ultrasonography reveals nail thickening in patients with chronic plaque psoriasis. Arch Dermatol Res. 2012;304(9):727\u201332. https:\/\/doi.org\/10.1007\/s00403-012-1274-9.","journal-title":"Arch Dermatol Res"},{"issue":"1","key":"207_CR10","doi-asserted-by":"publisher","first-page":"27","DOI":"10.1007\/s10067-003-0817-z","volume":"23","author":"R Scarpa","year":"2004","unstructured":"Scarpa R, Manguso F, Oriente A, Peluso R, Atteno M, Oriente P. Is the involvement of the distal interphalangeal joint in psoriatic patients related to nail psoriasis? Clin Rheumatol. 2004;23(1):27\u201330. https:\/\/doi.org\/10.1007\/s10067-003-0817-z.","journal-title":"Clin Rheumatol"},{"issue":"1","key":"207_CR11","doi-asserted-by":"publisher","first-page":"21","DOI":"10.1097\/RHU.0000000000000054","volume":"20","author":"C Sandobal","year":"2014","unstructured":"Sandobal C, Carb\u00f3 E, Iribas J, Roverano S, Paira S. Ultrasound nail imaging on patients with psoriasis and psoriatic arthritis compared with rheumatoid arthritis and control subjects. J Clin Rheumatol. 2014;20(1):21\u20134. https:\/\/doi.org\/10.1097\/RHU.0000000000000054.","journal-title":"J Clin Rheumatol"},{"issue":"1","key":"207_CR12","doi-asserted-by":"publisher","first-page":"37","DOI":"10.1016\/j.rhum.2015.07.011","volume":"83","author":"A Arbault","year":"2016","unstructured":"Arbault A, Devilliers H, Laroche D, Cayot A, Vabres P, Maillefert JF, et al. L\u2019\u00e9chographie des ongles dans le rhumatisme psoriasique : \u00e9tude pilote sur la faisabilit\u00e9, la reproductibilit\u00e9 et la validit\u00e9 de mesure. Rev Rhum. 2016;83(1):37\u201343. https:\/\/doi.org\/10.1016\/j.rhum.2015.07.011.","journal-title":"Rev Rhum"},{"issue":"2","key":"207_CR13","doi-asserted-by":"publisher","first-page":"177","DOI":"10.11152\/mu-1327","volume":"20","author":"L Idolazzi","year":"2018","unstructured":"Idolazzi L, Gisondi P, Fassio A, Viapiana O, Giollo A, Rossini M, et al. Ultrasonography of the nail unit reveals quantitative and qualitative alterations in patients with psoriasis and psoriatic arthritis. Med Ultrason. 2018;20(2):177\u201384. https:\/\/doi.org\/10.11152\/mu-1327.","journal-title":"Med Ultrason"},{"issue":"2","key":"207_CR14","doi-asserted-by":"publisher","first-page":"133","DOI":"10.1007\/s10067-009-1292-y","volume":"29","author":"M Gutierrez","year":"2010","unstructured":"Gutierrez M, Filippucci E, De Angelis R, Filosa G, Kane D, Grassi W. A sonographic spectrum of psoriatic arthritis: \u201cthe five targets\u201d. Clin Rheumatol. 2010;29(2):133\u201342. https:\/\/doi.org\/10.1007\/s10067-009-1292-y.","journal-title":"Clin Rheumatol"},{"issue":"7","key":"207_CR15","doi-asserted-by":"publisher","first-page":"1261","DOI":"10.1093\/rheumatology\/kes014","volume":"51","author":"M Gutierrez","year":"2012","unstructured":"Gutierrez M, Di Geso L, Salaffi F, et al. Development of a preliminary US power Doppler composite score for monitoring treatment in PsA. Rheumatology (Oxford). 2012;51(7):1261\u20138. https:\/\/doi.org\/10.1093\/rheumatology\/kes014.","journal-title":"Rheumatology (Oxford)"},{"issue":"6","key":"207_CR16","doi-asserted-by":"publisher","first-page":"644","DOI":"10.1136\/ard.2003.009548","volume":"63","author":"L Terslev","year":"2004","unstructured":"Terslev L, Torp-Pedersen S, Qvistgaard E, Von Der Recke P, Bliddal H. Doppler ultrasound findings in healthy wrists and finger joints. Ann Rheum Dis. 2004;63(6):644\u20138. https:\/\/doi.org\/10.1136\/ard.2003.009548.","journal-title":"Ann Rheum Dis"},{"issue":"6","key":"207_CR17","doi-asserted-by":"publisher","first-page":"645","DOI":"10.1046\/j.1600-0455.2003.00136.x","volume":"44","author":"L Terslev","year":"2003","unstructured":"Terslev L, Torp-Pedersen S, Qvistgaard E, Bliddal H, Terslev L. Spectral Doppler and resistive index a promising tool in ultrasonographic evaluation of inflammation in rheumatoid arthritis. Acta Radiol. 2003;44(6):645\u201352. https:\/\/doi.org\/10.1046\/j.1600-0455.2003.00136.x.","journal-title":"Acta Radiol"},{"issue":"1","key":"207_CR18","doi-asserted-by":"publisher","first-page":"54","DOI":"10.1111\/j.1365-2133.2011.10579.x","volume":"166","author":"H Husein El-Ahmed","year":"2012","unstructured":"Husein El-Ahmed H, Garrido-Pareja F, Ruiz-Carrascosa JC, Naranjo-Sintes R. Vessel resistance to blood flow in the nailfold in patients with psoriasis: a prospective case-control echo Doppler-based study. Br J Dermatol. 2012;166(1):54\u20138. https:\/\/doi.org\/10.1111\/j.1365-2133.2011.10579.x.","journal-title":"Br J Dermatol"},{"issue":"6","key":"207_CR19","doi-asserted-by":"publisher","first-page":"490","DOI":"10.1016\/j.rbr.2014.03.029","volume":"54","author":"JA Mendon\u00e7a","year":"2014","unstructured":"Mendon\u00e7a JA. As diferen\u00e7as do Doppler espectral, na artrite psori\u00e1tica e onicomicose. Rev Bras Reumatol. 2014;54(6):490\u20133. https:\/\/doi.org\/10.1016\/j.rbr.2014.03.029.","journal-title":"Rev Bras Reumatol"},{"key":"207_CR20","first-page":"659","volume":"73","author":"JA Mendon\u00e7a","year":"2014","unstructured":"Mendon\u00e7a JA, Nogueira JC, Laurido IMM, Vierhout C, Peron F, Lyrio AM. SAT0191 Can spectral doppler identify nail enthesitis in psoriatic arthritis?[Abstract]. Ann Rheum Dis. 2014;73:659.","journal-title":"Ann Rheum Dis"},{"issue":"3-4","key":"207_CR21","doi-asserted-by":"publisher","first-page":"172","DOI":"10.1159\/000442445","volume":"3","author":"N Cauwenberghs","year":"2016","unstructured":"Cauwenberghs N, Kuznetsova T. Determinants and prognostic significance of the renal resistive index. Pulse. 2016;3(3-4):172\u20138. https:\/\/doi.org\/10.1159\/000442445.","journal-title":"Pulse."},{"issue":"8","key":"207_CR22","doi-asserted-by":"publisher","first-page":"2665","DOI":"10.1002\/art.21972","volume":"54","author":"W Taylor","year":"2006","unstructured":"Taylor W, Gladman D, Helliwell P, Marchesoni A, Mease P, Mielants H. Classification criteria for psoriatic arthritis: development of new criteria from a large international study. Arthritis Rheum. 2006;54(8):2665\u201373. https:\/\/doi.org\/10.1002\/art.21972.","journal-title":"Arthritis Rheum"},{"issue":"4","key":"207_CR23","doi-asserted-by":"publisher","first-page":"238","DOI":"10.1159\/000250839","volume":"157","author":"T Frederiksson","year":"1978","unstructured":"Frederiksson T, Pettersson U. Severe psoriasis: oral therapy with a new retinoid. Dermatologica. 1978;157(4):238\u201344. https:\/\/doi.org\/10.1159\/000250839.","journal-title":"Dermatologica."},{"issue":"2","key":"207_CR24","doi-asserted-by":"publisher","first-page":"206","DOI":"10.1067\/S0190-9622(03)00910-1","volume":"49","author":"P Rich","year":"2003","unstructured":"Rich P, Scher RK. Nail psoriasis severity index: a useful tool for evaluation of nail psoriasis. J Am Acad Dermatol. 2003;49(2):206\u201312. https:\/\/doi.org\/10.1067\/S0190-9622(03)00910-1.","journal-title":"J Am Acad Dermatol"},{"issue":"8","key":"207_CR25","doi-asserted-by":"publisher","first-page":"1441","DOI":"10.1136\/ard.2009.122259","volume":"69","author":"M Schoels","year":"2010","unstructured":"Schoels M, Aletaha D, Funovits J, Kavanaugh A, Baker D, Smolen JS. Application of the DAREA\/DAPSA score for assessment of disease activity in psoriatic arthritis. Ann Rheum Dis. 2010;69(8):1441\u20137. https:\/\/doi.org\/10.1136\/ard.2009.122259.","journal-title":"Ann Rheum Dis"},{"issue":"2","key":"207_CR26","doi-asserted-by":"publisher","first-page":"127","DOI":"10.1136\/ard.62.2.127","volume":"62","author":"L Heuft-Dorenbosch","year":"2003","unstructured":"Heuft-Dorenbosch L, Spoorenberg A, van Tubergen A, Landew\u00e9 R, van ver Tempel H, Mielants H, et al. Assessment of enthesitis in ankylosing spondylitis. Ann Rheum Dis. 2003;62(2):127\u201332. https:\/\/doi.org\/10.1136\/ard.62.2.127.","journal-title":"Ann Rheum Dis"},{"issue":"01","key":"207_CR27","doi-asserted-by":"publisher","first-page":"48","DOI":"10.1136\/ard.2008.102053","volume":"69","author":"LC Coates","year":"2010","unstructured":"Coates LC, Fransen J, Helliwell PS. Defining minimal disease activity in psoriatic arthritis: a proposed objective target for treatment. Ann Rheum Dis. 2010;69(01):48\u201353. https:\/\/doi.org\/10.1136\/ard.2008.102053.","journal-title":"Ann Rheum Dis"},{"issue":"5","key":"207_CR28","doi-asserted-by":"publisher","first-page":"898","DOI":"10.3899\/jrheum.100857","volume":"38","author":"A Cauli","year":"2011","unstructured":"Cauli A, Gladman DD, Mathieu A, et al. Patient global assessment in psoriatic arthritis: a multicenter GRAPPA and OMERACT study. J Rheumatol. 2011;38(5):898\u2013903. https:\/\/doi.org\/10.3899\/jrheum.100857.","journal-title":"J Rheumatol"},{"key":"207_CR29","doi-asserted-by":"publisher","unstructured":"Cunha JS, Qureshi AA, Reginato AM. Nail Enthesis Ultrasound in Psoriasis and Psoriatic Arthritis: a Report from the 2016 GRAPPA Annual Meeting. J Rheumatol. 2017;44(5):688-90. https:\/\/doi.org\/10.3899\/jrheum.170146.","DOI":"10.3899\/jrheum.170146"},{"issue":"2","key":"207_CR30","doi-asserted-by":"publisher","first-page":"201","DOI":"10.1177\/096228029200100205","volume":"1","author":"A Agresti","year":"1992","unstructured":"Agresti A. Modelling patterns of agreement and disagreement. Stat Methods Med Res. 1992;1(2):201\u201318. https:\/\/doi.org\/10.1177\/096228029200100205.","journal-title":"Stat Methods Med Res"},{"issue":"2","key":"207_CR31","doi-asserted-by":"publisher","first-page":"97","DOI":"10.1159\/000182250","volume":"218","author":"D McGonagle","year":"2009","unstructured":"McGonagle D, Tan AL, Benjamin M. The nail as a musculoskeletal appendage - implications for an improved understanding of the link between psoriasis and arthritis. Dermatology. 2009;218(2):97\u2013102. https:\/\/doi.org\/10.1159\/000182250.","journal-title":"Dermatology."},{"issue":"3","key":"207_CR32","doi-asserted-by":"publisher","first-page":"312","DOI":"10.11152\/mu.2013.2066.183.hgh","volume":"18","author":"ME Marina","year":"2016","unstructured":"Marina ME, Botar Jid C, Bolboaca SD, Bocsa C, Mihu CM, T\u0103taru AD. High-frequency sonography in the evaluation of nail psoriasis. Med Ultrason. 2016;18(3):312\u20137. https:\/\/doi.org\/10.11152\/mu.2013.2066.183.hgh.","journal-title":"Med Ultrason"},{"issue":"2","key":"207_CR33","doi-asserted-by":"publisher","first-page":"185","DOI":"10.11152\/mu-1274","volume":"20","author":"S Bakirci Ureyen","year":"2018","unstructured":"Bakirci Ureyen S, Kara RO, Erturk Z, Yaldiz M. The microvascular and morphostructural changes of nails in psoriatic patients with nail disease; a link between ultrasound and videocapillaroscopy findings in the nailfold. Med Ultrason. 2018;20(2):185\u201391. https:\/\/doi.org\/10.11152\/mu-1274.","journal-title":"Med Ultrason"},{"key":"207_CR34","doi-asserted-by":"publisher","first-page":"697","DOI":"10.1007\/s00296-018-4222-y","volume":"39","author":"E Naredo","year":"2019","unstructured":"Naredo E, Janta I, Baniandr\u00e9s-Rodr\u00edguez O, et al. To what extend is nail ultrasound discriminative between psoriasis, psoriatic arthritis and healthy subjects? Rheumatol Int. 2019;39:697\u2013705.","journal-title":"Rheumatol Int"},{"issue":"3","key":"207_CR35","doi-asserted-by":"publisher","first-page":"733","DOI":"10.1016\/j.ejrnm.2015.04.009","volume":"46","author":"SM Ally Essayed","year":"2015","unstructured":"Ally Essayed SM. al-Shatouri MA, Nasr Allah YS, Atwa MA. Ultrasonographic characterization of the nails in patients with psoriasis and onychomycosis. Egypt J Radiol Nucl Med. 2015;46(3):733\u20139. https:\/\/doi.org\/10.1016\/j.ejrnm.2015.04.009.","journal-title":"Egypt J Radiol Nucl Med"},{"key":"207_CR36","first-page":"8251097","volume":"9","author":"M Krajewska-W\u0142odarczyk","year":"2018","unstructured":"Krajewska-W\u0142odarczyk M, Owczarczyk-Saczonek A, Placek W, Wojtkiewicz M, Wiktorowicz A, Wojtkiewicz J. Ultrasound assessment of changes in nails in psoriasis and psoriatic arthritis. Biomed Res Int. 2018;9:8251097.","journal-title":"Biomed Res Int"},{"key":"207_CR37","doi-asserted-by":"publisher","first-page":"231","DOI":"10.1159\/000343607","volume":"225","author":"SZ Aydin","year":"2013","unstructured":"Aydin SZ, Castillo-Gallego C, Ash ZR, et al. Ultrasonographic assessment of nail in psoriatic disease shows a link between onychopathy and distal interphalangeal joint extensor tendon enthesopathy. Dermatology. 2013;225:231\u20135.","journal-title":"Dermatology."},{"issue":"6","key":"207_CR38","doi-asserted-by":"publisher","first-page":"703","DOI":"10.1016\/j.jbspin.2016.10.005","volume":"84","author":"M Acquitter","year":"2017","unstructured":"Acquitter M, Misery L, Saraux A, Bressollette L, Jousse-Joulin S. Detection of subclinical ultrasound enthesopathy and nail disease in patients at risk of psoriatic arthritis. Joint Bone Spine. 2017;84(6):703\u20137. https:\/\/doi.org\/10.1016\/j.jbspin.2016.10.005.","journal-title":"Joint Bone Spine"},{"issue":"11","key":"207_CR39","doi-asserted-by":"publisher","first-page":"2087","DOI":"10.1007\/s00296-018-4160-8","volume":"38","author":"S Mondal","year":"2018","unstructured":"Mondal S, Dutta S, Lahiri D, Sinha D, Sircar G, Mandal AK, et al. Assessment of nail unit structures by ultrasound in patients with psoriatic arthritis and their correlations with disease activity indices: a case\u2013control study. Rheumatol Int. 2018;38(11):2087\u201393. https:\/\/doi.org\/10.1007\/s00296-018-4160-8.","journal-title":"Rheumatol Int"},{"issue":"10","key":"207_CR40","doi-asserted-by":"publisher","first-page":"1728","DOI":"10.1111\/jdv.15035","volume":"32","author":"P Moya Alvarado","year":"2018","unstructured":"Moya Alvarado P, Ro\u00e9 Crespo E, Mu\u00f1oz-Garza FZ, L\u00f3pez-Ferrer A, Laiz Alonso A, Vilarrassa Rull E, et al. Subclinical enthesopathy of extensor digitorum tendon is highly prevalent and associated with clinical and ultrasound alterations of the adjacent fingernails in patients with psoriatic disease. J Eur Acad Dermatol Venereol. 2018;32(10):1728\u201336. https:\/\/doi.org\/10.1111\/jdv.15035.","journal-title":"J Eur Acad Dermatol Venereol"},{"issue":"4","key":"207_CR41","doi-asserted-by":"publisher","first-page":"550","DOI":"10.1590\/S0365-05962012000400005","volume":"87","author":"C Ferrari Ribeiro","year":"2012","unstructured":"Ferrari Ribeiro C, Beatriz E, Siqueira D, Holler AP, Fabr\u00edcio L, Skare TL. Periungual capillaroscopy in psoriasis Capilaroscopia periungueal em psor\u00edase. An Bras Dermatol. 2012;87(4):550\u20133. https:\/\/doi.org\/10.1590\/S0365-05962012000400005.","journal-title":"An Bras Dermatol"},{"key":"207_CR42","doi-asserted-by":"publisher","first-page":"957480","DOI":"10.1155\/2013\/957480","volume":"2013","author":"D Graceffa","year":"2013","unstructured":"Graceffa D, Amorosi B, Maiani E, et al. Capillaroscopy in psoriatic and rheumatoid arthritis: a useful tool for differential diagnosis. Arthritis. 2013;2013:957480.","journal-title":"Arthritis."},{"key":"207_CR43","first-page":"872","volume":"35","author":"SZ Aydin","year":"2017","unstructured":"Aydin SZ, Gallego CC, Ash Z, Marzo-Ortega H, Wakefield RJ, McGonagle D. Vascularity of Nail Bed by Ultrasound to Discriminate Psoriasis, Psoriatic Arthritis and Healthy Controls.[Letter]. Clin Exp Rheumatol. 2017;35:872.","journal-title":"Clin Exp Rheumatol"}],"container-title":["Advances in Rheumatology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s42358-021-00207-2.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s42358-021-00207-2\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s42358-021-00207-2.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,7,28]],"date-time":"2021-07-28T07:14:42Z","timestamp":1627456482000},"score":1,"resource":{"primary":{"URL":"https:\/\/advancesinrheumatology.biomedcentral.com\/articles\/10.1186\/s42358-021-00207-2"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,7,28]]},"references-count":43,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["207"],"URL":"https:\/\/doi.org\/10.1186\/s42358-021-00207-2","relation":{},"ISSN":["2523-3106"],"issn-type":[{"value":"2523-3106","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,7,28]]},"assertion":[{"value":"1 March 2021","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"12 July 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"28 July 2021","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"The study was approved by the National Research Ethics Committee of Plataforma Brasil (n\u00b0 72762317.4.0000.5327).All participants consented the participation in the study.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"All participants consented the publication of the data and collected ultrasonography images.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"48"}}