Protective boot for ankle problems? (Seafield EH7)

Plastic boot with neoprene liner. Also heel lift insert. Size L (eg mens size 10). Front of boot comes off for access. Will hold ankle stable e.g to protect Achilles tendon. Worn for 1 hour only, not suitable for partner's problem. Solid sole, can be used outside. Any use to anyone? (Hospital won't take it back.)