Cleanse skin at proximal, dorsal aspect of the digit to be anesthetized, including web space
Introduce the needle at the base of the digit near the MCP joint, lateral to the midline of the digit.
Advance the needle around the bone towards the ventral side of the digit - stop if skin tenting is noted
Inject ~1mL of anesthetic to block ventral<unk>  nerve
As needle is withdrawn, inject additional ~1mL of anesthetic to block dorsal<unk>  nerve
Repeat on opposite side of digit
Described for finger blocks - most effective in 2nd-5th digits
Contraindicated if flexor tendon involvement or infection (e.g. felon, tenosynovitis, etc)
With hand supinated, locate flexor tendon of finger to be anesthetized
Cleanse skin over the distal palmar crease and proximal<unk>  crease
Method 1
Insert needle 90 degrees to the skin at the proximal<unk>  crease
Advance until needle hits bone, then withdraw 2-3mm
Redirect needle 45 degrees to the skin with needle pointing distally (towards finger tip)
Slowly inject anesthetic - initially no resistance, progressive resistance felt as tendon sheath fills (~1.5-3mL)
Method 2
Insert needle at 45 degrees to the skin just distal to the distal palmar crease
Advance into flexor tendon sheath
Slowly inject anesthesic - if resistance to injection felt, withdraw needle slightly
Insert needle 90 degrees to the skin at the proximal<unk>  crease
Advance until needle hits bone, then withdraw 2-3mm
Redirect needle 45 degrees to the skin with needle pointing distally (towards finger tip)
Slowly inject anesthetic - initially no resistance, progressive resistance felt as tendon sheath fills (~1.5-3mL)
Insert needle at 45 degrees to the skin just distal to the distal palmar crease
Advance into flexor tendon sheath
Slowly inject anesthesic - if resistance to injection felt, withdraw needle slightly
Digital block
Hair tourniquet
Nerve Block: Occipital
Nerve Block: Foot
Trifascicular Block
Nerve block: Auricular
Tourniquet 
Tourniquet