An antalgic gait is a gait that develops as a way to avoid pain while walking (antalgic = anti- + alge, "against pain"). It is a form of gait abnormality where the stance phase of gait is abnormally shortened relative to the swing phase. It can be a good indication of pain with weight-bearing.
Conditions associated with an antalgic gait
References
Antalgic gait Wikipedia(Text) CC BY-SA