Lock Joint

 is a condition in Fallout 76 and Fallout: The Roleplaying Game.

Fallout 76
can be inflicted by a diseased wolf, and results in Melee AP cost +50%.

Fallout: The Roleplaying Game
can be inflicted by any of the random causes of disease denoted in the Core Rulebook, and results in melee attacks costing 1 AP.

Appearances
appears in Fallout 76 and Fallout: The Roleplaying Game.