Vibration injury produces muscle hyperalgesia.
Vibration injury depends on isolectin B4 (IB4)-binding nociceptors.
IB4-binding nociceptors express voltage-gated potassium channel 4.3 (Kv4.3).
Kv4.3 expression is down-regulated after vibration injury.
Intrathecal antisense for Kv4.3 messenger RNA produces muscle hyperalgesia.