{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T10:23:12Z","timestamp":1773570192182,"version":"3.50.1"},"reference-count":33,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2023,12,3]],"date-time":"2023-12-03T00:00:00Z","timestamp":1701561600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2023,12,3]],"date-time":"2023-12-03T00:00:00Z","timestamp":1701561600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2023,12,3]],"date-time":"2023-12-03T00:00:00Z","timestamp":1701561600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2023,12,3]],"date-time":"2023-12-03T00:00:00Z","timestamp":1701561600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004921","name":"Shanghai Jiao Tong University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004921","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003399","name":"Shanghai Municipality Science and Technology Commission","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003399","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.fr","clinicalkey.jp","arthroscopyjournal.org","clinicalkey.es","clinicalkey.com.au","clinicalkey.com","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To propose a modified approach to measuring the femoro\u2010epiphyseal acetabular roof (FEAR) index while still abiding by its definition and biomechanical basis, and to compare the intra\u2010 and interobserver reliabilities of the original and the modified FEAR index. To propose a classification for medial sourcil edges.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We retrospectively reviewed a consecutive series of patients treated with periacetabular osteotomy and\/or hip arthroscopy at a single institute. Patients with unilateral or bilateral symptomatic borderline hip(s) were included. Hips with remarkable osteoarthritis, deformities, history of previous surgery, or without symptoms were excluded. A modified FEAR index was defined using a best\u2010fit circle to determine the sourcil line and 2 ancillary lines connecting femoral head and sourcil edges to determine epiphyseal line. Lateral center\u2010edge angle, Sharp angle, T\u00f6nnis angle on all hips, as well as FEAR index with original and modified approaches, were measured. Intra\u2010 and interobserver reliability were calculated as intraclass correlation coefficients (ICCs) for the FEAR index with both approaches and other alignments. A classification was proposed to categorize medial sourcil edges. ICCs for the 2 approaches across different sourcil groups also were calculated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>After we reviewed 411 patients, 49 were finally included. Thirty\u2010two patients (40 hips) were identified as having borderline dysplasia defined by a lateral center\u2010edge angle of 18 to 25\u00b0. Intraobserver ICCs for the modified method were good to excellent for borderline hips; poor to excellent for developmental dysplasia of the hip; and moderate to excellent for normal hips. As for interobserver reliability, the modified approach outperformed original approach with moderate\u2010to\u2010good interobserver reliability (developmental dysplasia of the hip group, ICC\u00a0= 0.650; borderline dysplasia group, ICC\u00a0= 0.813; normal hip group, ICC\u00a0= 0.709). The medial sourcil edge was classified to 3 groups upon its morphology. Type II (39.0%) and III (43.9%) sourcil were the dominant patterns. The sourcil classification had substantial intraobserver agreement (observer 4, kappa\u00a0= 0.68; observer 1, kappa\u00a0= 0.799) and moderate interobserver agreement (kappa\u00a0= 0.465). The modified approach to FEAR index possessed greater interobserver reliability in all medial sourcil edge patterns.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The modified FEAR index has better intra\u2010 and interobserver reliability compared with the original approach in all hip groups and sourcil groups. Type II and III sourcil types account for the majority, to which the modified approach is better.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level II, development of diagnostic criteria (consecutive patients with consistently applied reference standard and blinding).<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2023.11.024","type":"journal-article","created":{"date-parts":[[2023,12,4]],"date-time":"2023-12-04T08:42:43Z","timestamp":1701679363000},"page":"1807-1815","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":1,"title":["A Modified Approach to Measuring Femoro\u2010Epiphyseal Acetabular Roof Index Has Better Intraobserver and Interobserver Reliability Compared With the Original Femoro\u2010Epiphyseal Acetabular Roof Index"],"prefix":"10.1002","volume":"40","author":[{"given":"Kangming","family":"Chen","sequence":"first","affiliation":[{"name":"Department of Orthopaedics Huashan Hospital Fudan University Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jinyan","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xinhai","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiuguo","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tao","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jun","family":"Xia","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Huashan Hospital Fudan University Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chao","family":"Shen","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaodong","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics Xinhua Hospital affiliated to Shanghai Jiao Tong University School of Medicine Shanghai People\u2019s Republic of China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2023,12,3]]},"reference":[{"key":"e_1_2_3_2_2","doi-asserted-by":"publisher","DOI":"10.1097\/JSA.0000000000000298"},{"key":"e_1_2_3_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00247-019-04468-4"},{"key":"e_1_2_3_4_2","doi-asserted-by":"publisher","DOI":"10.1177\/23259671211007401"},{"key":"e_1_2_3_5_2","volume-title":"Studies on dysplastic acetabula and congenital subluxation of the hip joint: With special reference to the complication of osteoarthritis","author":"Wiberg 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