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Let $T$ denote a binding component of an open book $(\Sigma, \phi)$compatible with a closed contact 3-manifold $(M, \xi)$. We describe an explicitopen book $(\Sigma', \phi')$ compatible with $(M, \zeta)$, where $\zeta$ is thecontact structure obtained from $\xi$ by performing a full Lutz twist along$T$. Here, $(\Sigma', \phi')$ is obtained from $(\Sigma, \phi)$ by a\emph{local} modification near the binding.

Full Lutz twist along the binding of an open book