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We also studied the influence of disc length and position on efficiency and postoperative condylar height. Sixty-one patients (76 joints) undergoing TMJ disc anchorage were followed up for &gt;5 years. Visual analogue scale (VAS) score and maximum mouth-opening pre-and postsurgery were analysed and patient satisfaction recorded. Disc length, condyle height and disc position pre- and postsurgery were measured using MRI. Patients were ranked as A, B or C degree according to postoperative disc condyle position. Mean follow-up time was 71.34 months. Maximum mouth-opening improved by 14.34\u2009\u00b1\u20095.87\u2009mm, and VAS score decreased by 33.44\u2009\u00b1\u200920.56 (P\u2009&lt;\u20090.05). Clinical evaluation efficiency was 84.21%; patient satisfaction rate was 85.53%. On follow-up MRI, 68 joints were judged A or B degree (89.67%). Disc length was 7.96\u2009\u00b1\u20091.38\u2009mm, 7.10\u2009\u00b1\u20091.41\u2009mm and 5.75\u2009\u00b1\u20091.16\u2009mm in A, B and C groups, respectively. In patients evaluated as C, condylar height decreased by 0.43\u2009\u00b1\u20091.36\u2009mm, while increasing by 0.67\u2009\u00b1\u20091.88\u2009mm and 0.51\u2009\u00b1\u20091.09\u2009mm in A and B groups, respectively (all P\u2009&lt;\u20090.05). We concluded that anchorage surgery improves mouth-opening and eliminates pain, longer disc length is related to better postoperative disc position, and significant condylar reconstruction occurs after disc repositioning. MRI confirmed that TMJ disc anchorage is reliable 5 years postsurgery.<\/jats:p>","DOI":"10.1038\/s41598-019-54592-2","type":"journal-article","created":{"date-parts":[[2019,12,13]],"date-time":"2019-12-13T11:04:00Z","timestamp":1576235040000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Temporomandibular joint anchorage surgery: a 5-year follow-up study"],"prefix":"10.1038","volume":"9","author":[{"given":"Xiuming","family":"Liu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhihang","family":"Zhou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Mao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuzhuo","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jisi","family":"Zheng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shanyong","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liang","family":"Huo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2019,12,13]]},"reference":[{"key":"54592_CR1","doi-asserted-by":"publisher","first-page":"469","DOI":"10.1001\/archotol.1989.01860280067019","volume":"115","author":"CH Wilkes","year":"1989","unstructured":"Wilkes, C. 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