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dc.titlePatellar Height Decreasing After Distal Femur Endoprosthesis Reconstruction Does Not Affect Functional Outcomeen
dc.contributor.authorMauricio; Linpt_BR
dc.contributor.authorPatrick P.; Moonpt_BR
dc.contributor.authorBryan S.; Yupt_BR
dc.contributor.authorJun; Lipt_BR
dc.contributor.authorLiang; Lewispt_BR
dc.contributor.authorValerae O.pt_BR[Etchebehere, Mauricio] State Univ Campinas UNICAMP, Fac Med Sci, Dept Orthopaed & Traumatol, Campinas, SP, Brazilpt_BR[Etchebehere, Mauriciopt_BR, Patrick P.pt_BR, Bryan S.pt_BR, Valerae O.] Univ Texas MD Anderson Canc Ctr, Dept Orthopaed Oncol, 1400 Pressler St, Houston, TX 77030 USApt_BR[Yu, Junpt_BR, Liang] Univ Texas MD Anderson Canc Ctr, Dept Biostat, Houston, TX 77030 USApt_BR
dc.subjectEndoprosthesis Reconstructionen
dc.subjectDistal Femuren
dc.subjectBone Tumoren
dc.subjectPatellar Heighten
dc.subjectKnee Functionen
dc.description.abstractThe patellar height can influence extensor mechanism and the knee function. Thus, during knee arthroplasty, the surgeon seeks to maintain the correct patellar height. However, it is more difficult to define and maintain the correct patella height in megaprosthesis reconstructions after tumor resections. The objective of this study was to evaluate patellar height after distal femur endoprosthesis reconstruction and its association to knee function. Methods: This retrospective analysis included 108 patients who underwent distal femur resections and endoprosthesis reconstruction. The minimum follow-up was 1 year or until the patients underwent patellar resurfacing or endoprosthesis revision. Patellar height was calculated using Insall-Salvati ratio (ISR) and Insall-Salvati patellar tendon insertion ratio (PTR) at 2 different times: postoperatively and at the final follow-up. The postoperative ratio was calculated using the best postoperative radiograph taken at least 1 month after the procedure. The final measures were based on the radiograph available at the last follow-up consultation. The ISR and PTR were associated to anterior knee pain (AKP), range of motion (ROM), and extension lag (EXL). Results: The average follow-up was 4.5 years. The mean postoperative ISR was 1.02, and the mean ER at final follow-up was 0.95 (P<.0001).The mean postoperative PTR was 1.45, and the mean PTR at final follow-up was 1.40 (P=.016). There was no association between patellar height and AKP, ROM, and EXL. Patellar height decreases significantly after distal femur resections but does not affect AKP, ROM, and EXL.en
dc.relation.ispartofThe Journal of Arthroplastypt_BR
dc.publisherChurchill Livingstonept_BR
dc.identifier.citationThe Journal Of Arthroplasty. Churchill Livingstone , v. 31, p. 442 - 445, 2016.pt_BR
dc.description.sponsorshipSao Paulo Research Foundation, Brazilpt_BR
dc.description.sponsorshipNational Institutes of Health through Cancer Center Support Grant [5P30CA016672]pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.provenanceMade available in DSpace on 2017-11-13T13:57:47Z (GMT). No. of bitstreams: 1 000370662700019.pdf: 284195 bytes, checksum: e0ed8d08caca1bf33e0c0ba3be185689 (MD5) Previous issue date: 2016en
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