We thank Hu et al. for their comments on our work and for giving us the opportunity to further clarify our findings.

First, we note that this study was a double-blind trial because the anesthesiologist, investigator, and patient were blinded to the exact solution administered (saline or ropivacaine). Additionally, data collection investigators were different across the recovery room and surgical ward. With respect to patient blinding, patients were not educated on whether to attribute muscular weakness or loss of cold sensation to the surgery or to the analgesic block. Indeed, as noted in the Results section, 12 patients (24%) in the ropivacaine group did not report a loss of cold sensation in the hip area. Additionally, at 2 h after extubation, significant motor weakness was observed in one patient in both groups.

Second, the final solution...

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