Currently there is no indication that the character is crippled apart from trying to perform some activity that's blocked or hampered by the effect. As the character heals the crippling effect goes away at some time, but the only way to find out when it has healed enough is to try something that would provide a message if it's still crippled on a daily basis.
It would be good if the injury screen showed which injuries cause crippling effects, or, list these under the injuries in the main list.
It would be an extra bonus if the game provided a message similar to the one telling you that an injury has healed fully when it's healed sufficiently for a cripple effect to be removed.