Obturator nerve block: a technique based on anatomical findings and MRI analysis.

Objective: The block of the obturator nerve is used in pain medicine mostly for the management of acute pain after lower limb surgery or for chronic hip pain. The aim of this study was to define an injection technique based on an anatomical investigation and a magnetic resonance (MRI) analysis.

Design: Ten cadavers were studied, four of them bilaterally.

Radiological anatomy of the obturator nerve and its articular branches: basis to develop a method of radiofrequency denervation for hip joint pain.

Objective: A previous study of radiofrequency neurotomy of the articular branches of the obturator nerve for hip joint pain produced modest results. Based on an anatomical and radiological study, we sought to define a potentially more effective radiofrequency method.

Design: Ten cadavers were studied, four of them bilaterally.

A new closed-loop control system for isoflurane using bispectral index outperforms manual control.

Background: Automatic control of depth of hypnosis using the Bispectral Index (BIS) can help to reduce phases of inadequate control. Automated BIS control with propofol or isoflurane administration via an infusion system has recently been described, a comparable study with isoflurane administration via a vaporizer had not been conducted yet. Our hypothesis was that our new model based closed-loop control system can safely be applied clinically and maintains the BIS within a defined target range better than manual control.