{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T17:01:20Z","timestamp":1784998880296,"version":"3.55.0"},"reference-count":30,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T00:00:00Z","timestamp":1784678400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/100007307","name":"Arthrex","doi-asserted-by":"publisher","award":["IIRR-01869"],"award-info":[{"award-number":["IIRR-01869"]}],"id":[{"id":"10.13039\/100007307","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Foot &amp; Ankle Specialist"],"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Three-dimensional distance and coverage mapping (DM and CM) generated through weightbearing CT (WBCT) can aid in understanding the complex articular relationship in hallux valgus (HV). Minimally invasive (MIS) hallux valgus correction has become popular in correcting this deformity. Prior biomechanical studies have demonstrated that alterations occur at the first metatarsophalangeal (MTP) and tarsometatarsal (TMT) articulations following correction. The purpose of this study is to evaluate DM and CM characteristics at the first MTP and TMT joint as well as the medial metatarsosesamoid joint in a cohort of hallux valgus patients following MIS hallux valgus correction.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Twelve patients (10 female, 2 male; mean age 56.42 \u00b1 13.15 years) were enrolled, undergoing preoperative and 6-month postoperative WBCT scans following MIS hallux valgus correction. Foot Ankle Ability Measure (FAAM) scores were also collected at both visits. Automated segmentation was performed using a deep learning\u2013based approach to generate accurate bone masks from volumetric imaging data. Coverage (contact) and distance maps were created based on established protocols for the medial metatarsosesamoid, first MTP, and first TMT joints. Statistical analysis was conducted using paired t-tests and Wilcoxon signed-rank test as appropriate.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Regarding distance maps, at the metatarsosesamoid articulation, there was a significant increase in distance between the metatarsal and medial sesamoid along all quadrants of the joint postoperatively when compared with preoperative (P &lt; .05). At the MTP and TMT joints, there was no significant change in joint distance postoperatively. Regarding coverage maps, at the MTP joint, increases in joint contact for dorsomedial (17.9 \u00b1 11.1% vs 38.5 \u00b1 15.1%, P &lt; .001) and plantarmedial (21.7 \u00b1 16.0% vs 54.1 \u00b1 24.7%, P &lt; .001) quadrants when compared with pre-op were observed. There was no significant change along its dorsolateral (80.3 \u00b1 10.1% vs 68.7 \u00b1 16.2%, P = .05) or plantarlateral (87.5 \u00b1 6.5% vs 86.8 \u00b1 10.6% P = .85) aspects. At the TMT joint, there was a significant increase at the dorsolateral (83.5 \u00b1 11.8% vs 89.7 \u00b1 10.2%, P = .02) and plantarlateral (57.6 \u00b1 4.7% vs 65.4 \u00b1 5.6%, P &lt; .001) quadrants when compared with pre-op. There was a significant decrease in contact along the dorsomedial (89.2 \u00b1 13.1% vs 71.1 \u00b1 20.6%, P = .002) and plantarmedial (86.7 \u00b1 10.6% vs 70.2 \u00b1 14.3%, P &lt; .001) quadrants. There was no difference between pre-op and post-op FAAM scores.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>Notable differences were observed with respect to contact maps at the MTP and TMT joints indicating improved coverage of the MTP joint postoperatively. Relative decrease in coverage was observed at the medial TMT joint, reflecting medial displacement of the proximal metatarsal segment. Distance mapping at the medial metatarsosesamoid articulation demonstrated improved sesamoid alignment postoperatively.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Levels of Evidence<\/jats:title>\n                    <jats:p>Level 2<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/19386400261465100","type":"journal-article","created":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T05:54:14Z","timestamp":1784786054000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Weightbearing CT Evaluation of Contact and Distance Mapping of the First Tarsometatarsal and Metatarsophalangeal Joints Following MIS Hallux Valgus Correction"],"prefix":"10.1177","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8222-6956","authenticated-orcid":false,"given":"Sudheer C.","family":"Reddy","sequence":"first","affiliation":[{"name":"Shady Grove Orthopaedics, Adventist Healthcare, Rockville, Maryland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4089-8498","authenticated-orcid":false,"given":"Daniel J.","family":"Cuttica","sequence":"additional","affiliation":[{"name":"The Orthopaedic Foot and Ankle Center, Falls Church, Virginia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven K.","family":"Neufeld","sequence":"additional","affiliation":[{"name":"The Orthopaedic Foot and Ankle Center, Falls Church, Virginia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-8583-2689","authenticated-orcid":false,"given":"Khue","family":"Tran","sequence":"additional","affiliation":[{"name":"Curvebeam AI, Melbourne, VIC, Australia"},{"name":"Monash University, Melbourne, VIC, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoxu","family":"Li","sequence":"additional","affiliation":[{"name":"Curvebeam AI, Melbourne, VIC, Australia"},{"name":"Monash University, Melbourne, VIC, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cunjian","family":"Chen","sequence":"additional","affiliation":[{"name":"Monash University, Melbourne, VIC, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiuhong","family":"Ke","sequence":"additional","affiliation":[{"name":"Monash University, Melbourne, VIC, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,7,22]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1177\/107110070502600809"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00402-011-1447-6"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1186\/s13018-016-0459-x"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.M.00231"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100716679461"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.3113\/FAI.2011.1081"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.F.00205"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.19.00981"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1177\/10711007211008498"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1097\/BTF.0000000000000102"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100717745282"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.20.01178"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100720982967"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.24.01326"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1177\/2473011419874051"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100714544520"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1177\/10711007241251819"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1177\/19386400221079155"},{"key":"e_1_3_2_20_2","doi-asserted-by":"publisher","DOI":"10.1177\/19386400231184343"},{"key":"e_1_3_2_21_2","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.19.00073"},{"key":"e_1_3_2_22_2","doi-asserted-by":"publisher","DOI":"10.1177\/1071100720983227"},{"key":"e_1_3_2_23_2","doi-asserted-by":"publisher","DOI":"10.1177\/10711007241258447"},{"key":"e_1_3_2_24_2","doi-asserted-by":"publisher","DOI":"10.30795\/jfootankle.2022.v16.1629"},{"key":"e_1_3_2_25_2","article-title":"Three-dimensional distance and coverage mapping of the first ray in hallux valgus","author":"Reddy SC","unstructured":"Reddy SC, Tran K, Li X, Ke Q, Chen C. 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