Military Alloy Aluminum Handcuffs

A: Almost impossible. Without special training, forcibly breaking free will only result in severe abrasions or even fractures of the wrist. Even for someone with excellent hand flexibility who can pull their hand out of the handcuffs (a process called "unshackle"), it will come at the cost of serious injury, and it may only be effective against oversized or improperly used handcuffs.

A: Yes, but for special applications. Ankle cuffs are specially designed devices. In emergencies, handcuffs may be used to temporarily restrain the ankle, but this is not ergonomic and may cause discomfort or injury; it is not standard practice.