Background: Continuous femoral or lumbar plexus blocks have been demonstrated to provide effective postoperative analgesia of the lower extremity following total joint arthroplasty.

This is helpful in brachial and lumbar plexus lesions where the sympathetics may be involved and in patients with chronic regional pain syndrome (CRPS).

Objective: to observe the feasibility of combined lumbar plexus and sciatic nerve block guided by nerve stimulator in children for lower limb surgery.