Zidaru took up fencing in 1967 at his school sports club, CSS Triumf, and later joined CSA Steaua București.

[1] After his retirement as a fencer he became a coach at CSA Steaua and trained amongst others Cornel Milan and the 1986 world silver medal Miklós Bodoczi.

After Dan Podeanu's resignation following the London 2012 Summer Olympics, he became the coach of a largely reshuffled Romanian women's épée team: Loredana Dinu, Anca Măroiu and Simona Gherman retired from sport; only captain Ana Maria Brânză remained from the twice-world champion team.

Zidaru drafted Simona Pop and Maria Udrea as regular team members, with Raluca Sbîrcia and Amalia Tătăran as reserves.

The World Championships proved however very disappointing as no Romanian fencer got past the round of 16 and Romania lost in the quarter-finals, finishing 5th in the team event.