A lame and listless cat's front legs may be caused by fractures, arthritis, trauma, or muscle and ligament strains. You need to take the cat to the pet hospital to check the cause and then carry out targeted treatment to avoid delaying the condition. At ordinary times, you should pay attention to supplementing nutrients and calcium for cats, and do not let cats jump too high to avoid injury to cats; if you find that your cat is injured or has abnormal conditions, it is best to seek medical treatment immediately.