I started by understanding the anatomy of the joint that was going to be affected.

Since the animal was overseas, I gave provisions for height and angular adjustments. There were three parts of the prosthetic: a shell that snug fit around the amputated leg, a sleeve that holds a spring steel strip, and the metal strip itself.

The shell and sleeve were connected via a swivel ball-and-socket like joint, the angle of which could be adjusted. These two parts were 3D printed. The shell was lined with a medium density TPE foam. It also had slits on the outside and the top for a harness to tighten around and go over the animal's back.

For the metal strip I took an icing spatula, cut it to size and bent it to give it some rigidity towards the toe end. Since it is made of spring steel it provides some shock absorption and doesn't behave like a stump. I drilled a series of holes along the spine to allow height adjustment.

Sadly the animal had to be put down since he stopped responding to medication. A good learning exercise nevertheless and a happy vet!