Brian,
My husband is also a "determined little bugger" and had a total hip done 2 years ago. He thought he could really move with those crutches and FELL at home, 15 days post op. Then he was in big trouble because the hardware from the new hip was forced down and fractured the femur. The rest is a long story I won't bore you with so please just be careful at home - ok?
Take care! Glad you are doing so well,
Nancy-H