{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T20:27:58Z","timestamp":1789244878775,"version":"build-2803163510"},"reference-count":37,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T00:00:00Z","timestamp":1588032000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T00:00:00Z","timestamp":1588032000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T00:00:00Z","timestamp":1588032000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2021,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To biomechanically evaluate MPTL reconstruction and compare it with two techniques for MPFL reconstruction in regard to changes in patellofemoral contact pressures and restoration of patellar stability.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This is an experimental laboratory study in eight human cadaveric knees. None had patellofemoral cartilage lesions or trochlear dysplasia as evaluated by conventional radiographs and MRI examinations. The specimens were secured in a testing apparatus, and the quadriceps was tensioned in line with the femoral shaft. Contact pressures were measured using the TekScan sensor at 30\u00b0, 60\u00b0 and 90\u00b0. The sensor was placed in the patellofemoral joint through a proximal approach between femoral shaft and quadriceps tendon to not violate the medial and lateral patellofemoral complex. TekScan data were analysed to determine mean contact pressures on the medial and lateral patellar facets. Patellar lateral displacement was evaluated with the knee positioned at 30\u00b0 of flexion and 9\u00a0N of quadriceps load, then a lateral force of 22\u00a0N was applied. The same protocol was used for each condition: native, medial patellofemoral complex lesion, medial patellofemoral ligament reconstruction (MPFL\u2010R) using gracilis tendon, MPFL\u2010R using quadriceps tendon transfer, and medial patellotibial ligament reconstruction (MPTL\u2010R) using patellar tendon transfer.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      No statistical differences were found for mean and peak contact pressures, medial or lateral, among all three techniques. However, while both techniques of MPFL\u2010R were able to restore the medial restraint, MPTL\u2010R failed to restore resistance to lateral patellar translation to the native state (mean lateralization of the patella [mm]: native: 9.4; lesion: 22; gracilis MPFL\u2010R: 8.1; quadriceps MPFL\u2010R: 11.3; MPTL\u2010R: 23.4 (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>MPTL\u2010R and both techniques for MPFL\u2010R did not increase patellofemoral contact pressures; however, MPTL\u2010R failed to provide a sufficient restraint against lateral patellar translation lateral translation in 30\u00b0 of flexion. It, therefore, cannot be recommended as an isolated procedure for the treatment of patellar instability.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00167-020-06015-3","type":"journal-article","created":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T09:04:05Z","timestamp":1588064645000},"page":"793-799","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Isolated MPTL reconstruction fails to restore lateral patellar stability when compared to MPFL reconstruction"],"prefix":"10.1002","volume":"29","author":[{"given":"Luiz Felipe","family":"Ambra","sequence":"first","affiliation":[{"name":"<!--<label>1<\/label>--> Departamento de Ortopedia e Traumatologia Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo Rua Napole\u00e3o de Barros, 715 \u2013 1o.andar, Vila Clementino S\u00e3o Paulo Brazil"},{"name":"<!--<label>2<\/label>--> Center for Regenerative Medicine and Cartilage Repair Center Brigham and Women\u2019s Hospital 75 Francis Street Boston MA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos Eduardo","family":"Franciozi","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Departamento de Ortopedia e Traumatologia Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo Rua Napole\u00e3o de Barros, 715 \u2013 1o.andar, Vila Clementino S\u00e3o Paulo Brazil"},{"name":"<!--<label>3<\/label>--> Knee Institute, Hospital do Cora\u00e7\u00e3o S\u00e3o Paulo SP Brazil"},{"name":"<!--<label>4<\/label>--> Hospital Israelita Albert Einstein S\u00e3o Paulo SP Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amy","family":"Phan","sequence":"additional","affiliation":[{"name":"<!--<label>2<\/label>--> Center for Regenerative Medicine and Cartilage Repair Center Brigham and Women\u2019s Hospital 75 Francis Street Boston MA USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Flavio","family":"Faloppa","sequence":"additional","affiliation":[{"name":"<!--<label>1<\/label>--> Departamento de Ortopedia e Traumatologia Escola Paulista de Medicina, Universidade Federal de S\u00e3o Paulo Rua Napole\u00e3o de Barros, 715 \u2013 1o.andar, Vila Clementino S\u00e3o Paulo Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas H.","family":"Gomoll","sequence":"additional","affiliation":[{"name":"<!--<label>5<\/label>--> Department of Orthopedic Surgery Hospital for Special Surgery New York NY 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