Digital nerve block
Digital nerve block
Technique
Block of Volar and Dorsal Digital Nerves at the Base of the Finger
A 25-gauge 1½" needle is inserted at a point on the dorsolateral aspect of the base of the finger and a small skin wheel is raised.
The needle is then directed anteriorly toward the base of the phalanx.
The needle is advanced until the it contacts the phalanx, while the anesthesiologist observes for any protrusion from the palmar dermis directly opposite the needle path.
One mL of solution is injected as the needle is withdrawn 1 to 2 mm from the bone contact. An additional 1 mL is injected continuously as the needle is withdrawn back to the skin.
The same procedure is repeated on each side of the base of the finger to achieve anesthesia of the entire finger.
Technique and illastration
http://www.nysora.com/techniques/digital_block/
Step of digital block
http://www.ncemi.org/cse/cse1011.htm
Update in anaesthesia: Practical procedure
http://www.nda.ox.ac.uk/wfsa/html/u02/u02_007.htm
Family practise notebook: Digital Nerve Block, Digital Ring Block
http://www.fpnotebook.com/Surgery/Pharm/DgtlBlck.htm
Bestbet best evidence topics: metacarpal block better than ring block
http://www.bestbets.org/cgi-bin/bets.pl?record=00092
Digital block : Image from McGraw-Hill