{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,15]],"date-time":"2026-03-15T18:30:49Z","timestamp":1773599449498,"version":"3.50.1"},"reference-count":24,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2020,7,29]],"date-time":"2020-07-29T00:00:00Z","timestamp":1595980800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2020,7,29]],"date-time":"2020-07-29T00:00:00Z","timestamp":1595980800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2020,7,29]],"date-time":"2020-07-29T00:00:00Z","timestamp":1595980800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"funder":[{"DOI":"10.13039\/501100004735","name":"Natural Science Foundation of Hunan Province","doi-asserted-by":"publisher","award":["2019JJ40270"],"award-info":[{"award-number":["2019JJ40270"]}],"id":[{"id":"10.13039\/501100004735","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010451","name":"Health and Family Planning Commission of Hunan Province","doi-asserted-by":"publisher","award":["20201907"],"award-info":[{"award-number":["20201907"]}],"id":[{"id":"10.13039\/501100010451","id-type":"DOI","asserted-by":"publisher"}]},{"name":"grants from the Natural Science Foundation of Hunan Province","award":["2019JJ40270"],"award-info":[{"award-number":["2019JJ40270"]}]},{"name":"grants from the Health Commission of Hunan Province","award":["20201907"],"award-info":[{"award-number":["20201907"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>This study was undertaken to elucidate the clinical significance of widening of the popliteal hiatus on magnetic resonance imaging (MRI) after a torn discoid lateral meniscus (DLM).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Included are 125\u00a0knees with meniscal disorders after arthroscopic surgery, divided according to preoperative MRI and symptoms into group A (torn DLM with mechanical symptoms,11\u00a0knees); group B (torn DLM without mechanical symptoms,41\u00a0knees); group C (asymptomatic DLM, 19\u00a0knees); and group D (medial meniscal tears, 54\u00a0knees). Popliteal hiatus width was measured on sagittal and coronal MRI. During arthroscopy, total meniscectomy or central partial meniscectomy combined repair of the remaining part was performed in group A and group B. Outcomes were evaluated with MRI, the Tegner, Lysholm Knee Scoring Scale, and visual analog scale (VAS) scores.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The preoperative width of the popliteal hiatus was significantly larger in group A than in groups C and D (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05) on both views. Group A had a wider popliteal hiatus on sagittal view compared with group B (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05); group B had a wider popliteal hiatus on coronal view compared with group D (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). The width of the popliteal hiatus on sagittal view was significantly reduced after surgery in group A (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). In groups A and B, Lysholm and Tegner scores were improved, while VAS scores were reduced (all <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Widening of the popliteal hiatus on MRI was correlated with torn DLM and accompanied mechanical symptoms. Arthroscopic central partial menisectomy and stabilization of the posterior part of the middle body anterior to the popliteus tendon were effective for the treatment of torn DLM. These findings may help guide appropriate treatment for torn DLM.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of evidence<\/jats:title><jats:p>II.<\/jats:p><\/jats:sec>","DOI":"10.1007\/s00167-020-06179-y","type":"journal-article","created":{"date-parts":[[2020,7,29]],"date-time":"2020-07-29T07:03:52Z","timestamp":1596006232000},"page":"2843-2850","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Widening of the popliteal hiatus on sagittal MRI view plays a critical role in the mechanical signs of discoid lateral meniscus"],"prefix":"10.1002","volume":"29","author":[{"given":"Zhou","family":"Li","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weijie","family":"Fan","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1512-2775","authenticated-orcid":false,"given":"Zhu","family":"Dai","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heng","family":"Zhao","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Department of Radiology The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ying","family":"Liao","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yunliang","family":"Lei","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tao","family":"Luo","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Quanhui","family":"Liu","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jian","family":"Li","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Department of Orthopedics The First Affiliated Hospital of University of South China 421001 Hengyang Hunan 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March 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"20 July 2020","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"29 July 2020","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"This work was supported by grants from the Natural Science Foundation of Hunan Province (2019JJ40270), and grants from the Scientific Research Fund Project of Hunan Province\u00a0Health Commission (20201907). Zhou Li, Weijie Fan, Zhu Dai, Heng Zhao, Ying Liao, Yunliang Lei, Tao Luo, Quanhui Liu, Jian Li declare that they have no conflict of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Approval for this study was obtained from the ethics committee of the First Affiliated Hospital of University of South China and informed consent forms were signed by each patient included in this study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical standards"}}]}}