Objective: To measure and compare tibial torsion values as assessed by goniometry and three-dimensional kinematics. In addition, the impact of each one of these measurements on kinematic and kinetic results for normal gait was determined. Methods: Twenty-three healthy and fully ambulatory patients were assessed, 11 women and 12 men, from 20 to 40 years old. Data were collected at a laboratory for the three-dimensional analysis of movement with 10 cameras and two force plates. Tibial torsion measurements were obtained using goniometry and three-dimensional kinematics based on the Plug-in Gait model. Afterwards, both procedures were compared, and the impact of each result was assessed on the kinematic and kinetic modeling of the knee and ankle. Results: Pearson's linear correlation coefficient (r=0,504) showed a moderate correlation between the three-dimensional kinematics and goniometry, and between the changes in the measurements. Regarding the processed kinematic and kinetic results for every torsion position, no significant differences were noticed among any of the studied variables (p>0.05). Conclusion: Although statistical correlation among tibial torsion angles by goniometry and three-dimensional kinematic were moderate, kinematic and kinetic analysis of the joints did not reveal any significant changes. Level of Evidence I, Diagnostic Studies - Investigating a Diagnostic Test.
Introdução: A análise da marcha é o instrumento mais utilizado para avaliar as alterações biomecânicas associadas à indicação da Artroplastia Total de Quadril (ATQ). Objetivo: Avaliar a cinemática tridimensional da articulação do quadril e os parâmetros espaço-temporais, durante a deambulação, em pacientes submetidos à ATQ e comparar seu padrão de marcha com o dos indivíduos sadios. Métodos: Dois grupos foram formados: o grupo 1, experimental, constituído de nove pacientes que realizaram ATQ, todos via anterolateral, e o grupo 2, controle, composto por quatro indivíduos saudáveis. Realizou-se análise tridimensional computadorizada da marcha dos participantes. Os dados cinemáticos de 12 ciclos de marcha de cada paciente foram comparados com o grupo controle e analisados estatisticamente por meio de comparação de intervalos de confiança de 95%. Resultados: Alterações significantes (p< 0,05) nos três planos de movimento dos quadris estudados foram encontradas. Conclusão: Houve diferença linear e angular quando comparada a cinemática tridimensional da articulação do quadril protetizado e não protetizado dos indivíduos no grupo ATQ com os do grupo controle.
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