Comparison of total hip arthroplasty in osteoarthritis of mechanical and rheumatologic causes - Ejnisman, Leandro; Leonhardt, Nathalia Zalc; Fernandes, Laura Fillipini Lorimier; Leonhardt, Marcos de Camargo; Vicente, José Ricardo Negreiros; Croci, Alberto Tesconi (Acta Ortopédica Brasileira, 2014)