{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T16:41:18Z","timestamp":1792600878800,"version":"4.5.0"},"reference-count":39,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:00:00Z","timestamp":1792540800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T00:00:00Z","timestamp":1792540800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"National High Level Hospital Clinical Research Funding and Elite Medical Professionals Initiative of China-Japan Friendship Hospital","award":["NO.ZRJY2025-QM13"],"award-info":[{"award-number":["NO.ZRJY2025-QM13"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Aesth Plast Surg"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Retroauricular hyaluronic acid (HA) injection for aesthetic enhancement can precipitate immediate-onset facial nerve palsy. The underlying mechanism remains unclear, and no consensus exists on the next step when prolonged conservative therapy fails.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To investigate the pathogenesis of persistent facial paralysis following retroauricular HA injection and to evaluate the functional and aesthetic outcomes of trans-mastoid facial nerve decompression in affected patients.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We retrospectively reviewed 17 patients (16 females, 1 male; mean age 33.65\u00b17.91 years) who developed immediate-onset unilateral facial paralysis after retroauricular HA injection and showed no improvement after 4 weeks of conservative therapy. All patients underwent trans-mastoid facial nerve decompression. Functional outcomes were assessed pre- and 3 months post-operatively using the eFACE scale, Emotrics software, Facial Disability Index (FDI), and CSQ-3 satisfaction questionnaire.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Post-operative eFACE scores revealed significant improvement in all static and dynamic parameters except static palpebral fissure height (\n                      <jats:italic>P<\/jats:italic>\n                      &lt;0.001), with dynamic indices showing the most marked recovery. Emotrics measurements demonstrated significant reductions in inter-side differences for eyebrow elevation, oral commissure height, and dental show on smiling (all\n                      <jats:italic>P<\/jats:italic>\n                      &lt;0.001). FDI scores rose significantly for both physical function and social\/well-being function (\n                      <jats:italic>P<\/jats:italic>\n                      &lt;0.001). Patient satisfaction was uniformly high.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Trans-mastoid facial nerve decompression is safe and effective for persistent facial paralysis secondary to retroauricular HA injection, yielding significant functional improvement and high patient satisfaction.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence IV<\/jats:title>\n                    <jats:p>\n                      This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors\n                      <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"http:\/\/www.springer.com\/00266\" ext-link-type=\"uri\">www.springer.com\/00266<\/jats:ext-link>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00266-026-06380-3","type":"journal-article","created":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T15:56:46Z","timestamp":1792598206000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Functional and Aesthetic Outcomes of Trans-Mastoid Decompression for Facial Paralysis After Retroauricular Hyaluronic Acid Injection"],"prefix":"10.1007","author":[{"given":"Siwei","family":"Qu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sile","family":"Shen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hongwen","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengyuan","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,10,21]]},"reference":[{"issue":"1","key":"6380_CR1","doi-asserted-by":"publisher","first-page":"8","DOI":"10.1016\/j.cjprs.2023.02.004","volume":"5","author":"Z Xiong","year":"2023","unstructured":"Xiong Z, Jiang Z, Bai Y, Liang M, Jiang W, Liu K. 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