{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,14]],"date-time":"2026-10-14T02:22:34Z","timestamp":1791944554152,"version":"4.3.4"},"reference-count":27,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2019,10,16]],"date-time":"2019-10-16T00:00:00Z","timestamp":1571184000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Foot Ankle Int."],"published-print":{"date-parts":[[2020,2]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Hallux valgus (HV) is a triplanar deformity of the first ray including pronation of the first metatarsal with subluxation of the sesamoids. The purpose of this study was to investigate if a first tarsometatarsal fusion (modified Lapidus technique), without preoperative knowledge of pronation measured on weightbearing computed tomographic (CT) scans, changed pronation of the first metatarsal and determine if reduction of the sesamoids was correlated with changes in first metatarsal pronation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Thirty-one feet in 31 patients with HV who underwent a modified Lapidus procedure had preoperative and at least 5-month postoperative weightbearing CT scans and radiographs. Differences in preoperative and postoperative pronation of the first metatarsal using a 3-dimensional computer-aided design, HV angle, and intermetatarsal angle (IMA) were calculated using Wilcoxon signed-rank tests. After dividing patients into groups based on sesamoid station, Kruskal-Wallis H tests were used to compare first metatarsal pronation between the groups.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      The mean preoperative and postoperative pronation of the first metatarsal was 29.0 degrees (range 15.8-51.1, SD 8.7) and 20.2 degrees (range 10.4-32.6, SD 5.4), respectively, which was a mean change in pronation of the first ray of \u22128.8 degrees (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001). There was no difference in pronation of the first ray when stratified by postoperative sesamoid position (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &gt; .250). The average preoperative and postoperative IMA was 16.7 degrees (SD 3.2) and 8.8 degrees (SD 2.8), which demonstrated a significant change (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; .001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>The modified Lapidus procedure was an effective tool to change pronation of the first ray. Reduction of the sesamoids was not associated with postoperative first metatarsal pronation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence:<\/jats:title>\n                    <jats:p>Level IV, case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/1071100719883325","type":"journal-article","created":{"date-parts":[[2019,10,16]],"date-time":"2019-10-16T08:44:36Z","timestamp":1571215476000},"page":"125-132","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":50,"title":["Effect of the Modified Lapidus Procedure on Pronation of the First Ray in Hallux Valgus"],"prefix":"10.1177","volume":"41","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3313-2520","authenticated-orcid":false,"given":"Matthew S.","family":"Conti","sequence":"first","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joseph F.","family":"Willett","sequence":"additional","affiliation":[{"name":"University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5884-3009","authenticated-orcid":false,"given":"Jonathan H.","family":"Garfinkel","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark C.","family":"Miller","sequence":"additional","affiliation":[{"name":"University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen V.","family":"Costigliola","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew J.","family":"Elliott","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen F.","family":"Conti","sequence":"additional","affiliation":[{"name":"Orthopaedic Specialists\u2013UPMC, Pittsburgh, PA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4304-7445","authenticated-orcid":false,"given":"Scott J.","family":"Ellis","sequence":"additional","affiliation":[{"name":"Hospital for Special Surgery, New York, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2019,10,16]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/2473011417S000110"},{"key":"e_1_3_2_3_2","volume-title":"An assessment of hallux valgus","author":"Campbell B.","year":"2017","unstructured":"Campbell B. An assessment of hallux valgus [dissertation]. Pittsburgh, PA: University of Pittsburgh; 2017."},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100718793391"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100716658456"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.fas.2013.01.003"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100714564217"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100718822839"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-199606000-00018"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.F.01139"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00206143"},{"key":"e_1_3_2_12_2","first-page":"1","article-title":"Mobility of the first metatarsal-cuneiform joint in patients with and without hallux valgus : in vivo three-dimensional analysis using computerized tomography scan","volume":"2015","author":"Geng X","unstructured":"Geng X, Wang C, Ma X, et al. Mobility of the first metatarsal-cuneiform joint in patients with and without hallux valgus : in vivo three-dimensional analysis using computerized tomography scan. J Orthop Surg Res. 2015:1-7.","journal-title":"J Orthop Surg Res"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100716666562"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jos.2017.08.008"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.88B2.17550"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100715576994"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100717744174"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.16.00542"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1186\/s12891-018-2262-9"},{"key":"e_1_3_2_20_2","doi-asserted-by":"publisher","DOI":"10.1093\/ageing\/25.1.29"},{"key":"e_1_3_2_21_2","doi-asserted-by":"publisher","DOI":"10.7547\/87507315-91-5-222"},{"key":"e_1_3_2_22_2","doi-asserted-by":"publisher","DOI":"10.1177\/107110070502600610"},{"key":"e_1_3_2_23_2","doi-asserted-by":"publisher","DOI":"10.1002\/acr.20396"},{"key":"e_1_3_2_24_2","doi-asserted-by":"publisher","DOI":"10.1186\/1757-1146-3-21"},{"key":"e_1_3_2_25_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.H.00796"},{"key":"e_1_3_2_26_2","doi-asserted-by":"publisher","DOI":"10.1177\/107110079601700307"},{"key":"e_1_3_2_27_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM198812293192604"},{"key":"e_1_3_2_28_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.285.19.2474"}],"container-title":["Foot &amp; Ankle International"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1071100719883325","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/1071100719883325","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/1071100719883325","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T21:23:46Z","timestamp":1777411426000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/1071100719883325"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,10,16]]},"references-count":27,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2020,2]]}},"alternative-id":["10.1177\/1071100719883325"],"URL":"https:\/\/doi.org\/10.1177\/1071100719883325","relation":{},"ISSN":["1071-1007","1944-7876"],"issn-type":[{"value":"1071-1007","type":"print"},{"value":"1944-7876","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,10,16]]}}}