James and Kay have come to see Noel because their one-year-old bouncy Border Terrier Charlie is in pain and struggles to put weight on his hind leg.

The Problem

Charlie broke a growth plate in the top of his tibia bone as a puppy and it self-healed, but at the wrong angle, and now a recent knock in the same area has caused his cruciate ligament to rupture.


The steep angle of the joint surface in Charlie’s knee is so severe that Noel proposes two different bone cuts to level out the joint surface. He will then secure the segments of bone with his own invention, the ‘FROG’ plate, which is custom-made using computer models of Charlie’s CT scan to fit his tibia bone exactly.