{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T18:13:31Z","timestamp":1791915211716,"version":"4.3.4"},"reference-count":21,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2020,5,14]],"date-time":"2020-05-14T00:00:00Z","timestamp":1589414400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2020,5,14]],"date-time":"2020-05-14T00:00:00Z","timestamp":1589414400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Musculoskelet Disord"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>An arthroscopic narrow posteromedial gap of the knee may cause failure of a meniscus operation. The posteromedial complex (PMC) of the knee, including the posterior part of the medial collateral ligament (MCL) and the posterior oblique ligament (POL), has a restrictive effect on the opening of the posteromedial gap of the knee in the half-extension position. Thus, we evaluated the radiological and clinical results of pie-crusting release of the PMC for arthroscopic meniscal surgery in tight knees.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Sixty patients with posterior injury of the medial meniscus were reviewed. All patients accepted arthroscopic pie-crusting release of the PMC. Fourty patients accepted meniscoplasty, and 20 patients accepted meniscal suturing. To evaluate the arthroscopic opening of the medial gap in 20\u00b0 half-extension under 11-kg valgus stress, the width of the medial space before and after release were measured. During follow-up, the medial stability was evaluated by radiographic measurements of the joint space width (JSW) in 20\u00b0 half-extension. Magnetic resonance imaging (MRI) was conducted to evaluate healing of the MCL and meniscus. Knee functions were evaluated using VAS (visual analogy score), Lysholm, IKDC (International Knee Documentation Committee) and Tegner scoring systems.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      In all patients, meniscus operations were performed without iatrogenic cartilage injury. After PMC release, the arthroscopic width of the medial space was 5.7\u2009\u00b1\u20090.5\u2009mm, larger than that before release (2.5\u2009\u00b1\u20090.5\u2009mm,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.01). The follow-up time was 21.93\u2009\u00b1\u20097.04\u2009months, there was no residual valgus laxity of the knee. The radiographic JSW was 5.97\u2009\u00b1\u20090.8\u2009mm preoperatively, 9.2\u2009\u00b1\u20091.1\u2009mm in the 1st week postoperatively, and 6.1\u2009\u00b1\u20090.9\u2009mm by the 3rd postoperative month, showing no differences between preoperative and 3\u2009months postoperative measurement (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&gt;\u20090.05). For sutured meniscus, MRI showed healing in 15 patients while five had two-grade abnormal signals. VAS, Lysholm, IKDC and Tegner scores were 1.80\u2009\u00b1\u20090.51, 80.08\u2009\u00b1\u20093.74, 82.17\u2009\u00b1\u20094.64 and 5.48\u2009\u00b1\u20090.59, respectively, showing significant differences compared with the preoperative scores (5.57\u2009\u00b1\u20090.69, 48.17\u2009\u00b1\u20094.22, 51.42\u2009\u00b1\u20094.02 and 3.20\u2009\u00b1\u20090.68, respectively,\n                      <jats:italic>p<\/jats:italic>\n                      &lt;\u20090.01).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Pie-crusting release of the PMC can increase the posteromedial space and improve the visual field of the knee under arthroscopy, while neither causing no residual valgus instability of the knee nor affecting the clinical outcome at the final follow-up.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12891-020-03336-9","type":"journal-article","created":{"date-parts":[[2020,5,19]],"date-time":"2020-05-19T09:01:03Z","timestamp":1589878863000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":24,"title":["Arthroscopic pie-crusting release of the posteromedial complex of the knee for surgical treatment of medial meniscus injury"],"prefix":"10.1186","volume":"21","author":[{"given":"Xu","family":"Han","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peizhao","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jinyang","family":"Yu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Honglue","family":"Tan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,5,14]]},"reference":[{"issue":"8","key":"3336_CR1","doi-asserted-by":"publisher","first-page":"1124","DOI":"10.1016\/j.arthro.2011.12.020","volume":"28","author":"S Henry","year":"2012","unstructured":"Henry S, Mascarenhas R, Kowalchuk D, Forsythe B, Irrgang JJ, Harner CD. 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Informed written consent was obtained from each participant, and children (under 16\u2009years old) from their parent.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Written informed consent was obtained from the patients for publication of this report and any accompanying images.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"301"}}