{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T03:07:19Z","timestamp":1793070439298,"version":"4.5.0"},"reference-count":43,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2020,1,27]],"date-time":"2020-01-27T00:00:00Z","timestamp":1580083200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2020,1,27]],"date-time":"2020-01-27T00:00:00Z","timestamp":1580083200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2020,1,27]],"date-time":"2020-01-27T00:00:00Z","timestamp":1580083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2020,1,27]],"date-time":"2020-01-27T00:00:00Z","timestamp":1580083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"name":"SPA"},{"DOI":"10.13039\/501100009927","name":"Fidia Farmaceutici","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100009927","id-type":"DOI","asserted-by":"crossref"}]},{"name":"SPA"},{"DOI":"10.13039\/100012630","name":"Zimmer Biomet","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100012630","id-type":"DOI","asserted-by":"crossref"}]},{"name":"SRL"},{"DOI":"10.13039\/501100009927","name":"Fidia Farmaceutici","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100009927","id-type":"DOI","asserted-by":"crossref"}]},{"name":"SPA"},{"DOI":"10.13039\/100012630","name":"Zimmer Biomet","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100012630","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100004331","name":"Johnson & Johnson","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100004331","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012630","name":"Zimmer Biomet","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100012630","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["arthroscopyjournal.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2020,6]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To provide a direct comparison between medial patellofemoral ligament (MPFL) reconstruction and the other medial patellofemoral soft\u2010tissue surgeries in the restoration of the medial patellar restraint after lateral patellar dislocations in the absence of untreated predisposing factors such as high grade trochlear dysplasia, knee malalignment, patella alta or high tibial tubercle\u2010trochlear groove distance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>PubMed, Cochrane\u2010library, Web of Science, and gray literature databases were searched to find all the relevant records. Study selection, data extraction, and risk of bias assessment were performed following the Cochrane and Preferred Reporting Items for Systematic Reviews and Meta\u2010analysis guidelines. Different techniques to treat lateral patellar dislocation in the absence of untreated predisposing factors were compared in terms of redislocation and complication rates, Kujala, Lysholm, International Knee Documentation Committee, and Tegner scores at the short\u2010term (3 years) and long\u2010term (&gt;3 years) follow\u2010up through meta\u2010analyses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Six studies involving 319 knees were included in the meta\u2010analysis. The analyses of redislocation (0.7% vs 2.9%) and minor complication rates (12% vs 9%) showed no significant differences between MPFL reconstruction and other medial soft\u2010tissue surgeries. Significant differences favoring MPFL reconstruction were documented in Kujala and Lysholm scores at short\u2010term (8.6,\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001; 10.9,\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001) and long\u2010term follow\u2010ups (6.3,\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .02; 13.5,\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001). No significant differences were found in the analyses of International Knee Documentation Committee (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .10) and Tegner scores (\n                      <jats:italic>P<\/jats:italic>\n                      \u00a0= .19). Level of evidence was low or very low.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>MPFL reconstruction and medial patellofemoral soft\u2010tissue surgery procedures were both effective in restoring the medial restraining forces preventing redislocation, but MPFL reconstruction provided better functional outcomes both at short\u2010term and long\u2010term follow\u2010up. Thus, besides the treatment of predisposing factors, MPFL reconstruction seems to be, based on the results of this meta\u2010analysis, a suitable strategy to restore the medial restraining function in the treatment of recurrent LPD.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level III (meta\u2010analysis of randomized and nonrandomized comparative trials)<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2019.12.029","type":"journal-article","created":{"date-parts":[[2020,1,27]],"date-time":"2020-01-27T20:03:25Z","timestamp":1580155405000},"page":"1725-1734","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":53,"title":["Recurrent Patellar Dislocations Without Untreated Predisposing Factors: Medial Patellofemoral Ligament Reconstruction Versus Other Medial Soft\u2010Tissue Surgical 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Ortopedico Rizzoli Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Zaffagnini","sequence":"additional","affiliation":[{"name":"II Clinica IRCCS Istituto Ortopedico Rizzoli Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Candrian","sequence":"additional","affiliation":[{"name":"Orthopaedic and Traumatology Unit Ospedale Regionale di Lugano EOC Lugano Switzerland 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