{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T21:02:10Z","timestamp":1789074130671,"version":"build-2803163510"},"reference-count":22,"publisher":"Georg Thieme Verlag KG","issue":"03","license":[{"start":{"date-parts":[[2023,6,29]],"date-time":"2023-06-29T00:00:00Z","timestamp":1687996800000},"content-version":"vor","delay-in-days":28,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rev Bras Ortop (Sao Paulo)"],"published-print":{"date-parts":[[2023,6]]},"abstract":"<jats:title>Resumo<\/jats:title><jats:p>\n          Objetivos\u2003Embora a osteonecrose da cabe\u00e7a do f\u00eamur seja uma les\u00e3o prevalente, seus efeitos sobre os par\u00e2metros da marcha n\u00e3o foram minuciosamente estudados e n\u00e3o est\u00e3o bem estabelecidos na literatura atual. O objetivo principal do presente estudo \u00e9 descrever a marcha em pacientes com osteonecrose.<\/jats:p><jats:p>\n          M\u00e9todos\u2003Trata-se de um estudo transversal. Nove pacientes com diagn\u00f3stico de osteonecrose da cabe\u00e7a do f\u00eamur, sob acompanhamento regular em ambulat\u00f3rio, foram selecionados para o presente estudo e submetidos \u00e0 an\u00e1lise da marcha com Vicon Motion Capture Systems. Os dados espaciais e temporais foram obtidos e os \u00e2ngulos articulares foram calculados com o sistema de coordenadas angulares de Euler. Sistemas de coordenadas distais e plataformas de for\u00e7a foram utilizados para o c\u00e1lculo de momentos articulares e de for\u00e7as de rea\u00e7\u00e3o ao solo, respectivamente.<\/jats:p><jats:p>\n          Resultados\u2003Os pacientes com osteonecrose apresentaram menor velocidade (0,54 m\/s\u2009\u00b1\u20090,19) e menor cad\u00eancia (83,01 passos\/minuto\u2009\u00b1\u200913,23) do que pacientes saud\u00e1veis. As amplitudes de movimento de obliquidade e rota\u00e7\u00e3o p\u00e9lvica foram de 10,12\u00b0\u2009\u00b1\u20093,03 e 18,23\u00b0\u2009\u00b1\u20099,17, respectivamente. A m\u00e9dia de flex\u00e3o do quadril foi de 9,48\u00b0\u2009\u00b1\u20093,40. O estudo das for\u00e7as de rea\u00e7\u00e3o ao solo revelou redu\u00e7\u00e3o das for\u00e7as de frenagem e propuls\u00e3o. Os momentos articulares de flex\u00e3o e adu\u00e7\u00e3o ca\u00edram (0,42 Nm\/kg\u2009\u00b1\u20090,2 e 0,30 Nm\/kg\u2009\u00b1\u20090,11), mas o momento de abdu\u00e7\u00e3o aumentou (0,42 Nm\/kg\u2009\u00b1\u20090,18).<\/jats:p><jats:p>\n          Conclus\u00f5es\u2003O presente estudo mostrou que a osteonecrose da cabe\u00e7a do f\u00eamur \u00e9 associada a mecanismos compensat\u00f3rios da marcha, com aumento da movimenta\u00e7\u00e3o p\u00e9lvica e diminui\u00e7\u00e3o da flex\u00e3o do joelho para prote\u00e7\u00e3o da articula\u00e7\u00e3o do quadril. A redu\u00e7\u00e3o dos momentos de flex\u00e3o e adu\u00e7\u00e3o do quadril tamb\u00e9m foi identificada e a fraqueza destes grupos musculares pode estar correlacionada \u00e0 doen\u00e7a.<\/jats:p>","DOI":"10.1055\/s-0042-1747975","type":"journal-article","created":{"date-parts":[[2023,6,29]],"date-time":"2023-06-29T22:33:38Z","timestamp":1688078018000},"page":"500-506","source":"Crossref","is-referenced-by-count":3,"title":["An\u00e1lise biomec\u00e2nica da marcha de pacientes com osteonecrose da cabe\u00e7a do f\u00eamur"],"prefix":"10.1055","volume":"58","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5648-9285","authenticated-orcid":false,"given":"Julia Silva e Lima","family":"Schleder","sequence":"additional","affiliation":[{"name":"Departamento de Ortopedia, Reumatologia e Traumatologia, Faculdade de Ci\u00eancias M\u00e9dicas, Universidade Estadual de Campinas, Campinas, SP, 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