Comparison between proximal row carpectomy and four-corner fusion for treating osteoarthrosis following carpal trauma: a prospective randomized study - Bisneto, Edgard Novaes França; Freitas, Maura Cristina; Paula, Emygdio José Leomil de; Mattar Jr., Rames; Zumiotti, Arnaldo Valdir (Clinics, 2011)