Ultrasound-guided 'two-in-one' femoral and obturator nerve block in the dog: an anatomical study

A volume of 0.2 mL kg−1 administered close to the FN by a ventral US-guided SIA produced a sufficient distribution of the injectate within the IPM to produce effective staining of the FN and ON. This US-guided technique may be an appropriate alternative to previously reported techniques based on electrolocation to block the FN and ON in the dog.