When speaking about bones and body parts what is the difference between a crippled body part/bone and a broken body part/bone?
- A crippled leg
- A broken arm
A crippled limb means the person is not able to fully use the limb for some reason (perhaps due to an injury, illness, or birth defect). Words are flexible so this may not always hold true, but, generally speaking, injured may imply a full recovery is expected, while crippled may imply a more permanent disability.
A broken limb simply means the bone has been fractured (either a crack or a full break):
Crippling implies permanent disability, and is not related to a specific type of injury. For example you can have crippling nerve damage, or crippling joint pain, or even crippling headaches (if they occur so often that you can't function normally).
So "a crippled leg" is one that is permanently injured, or at least one that's not likely to heal. A "broken arm" means the bone has been fractured, but is expected to heal.