First, he is doing well, and back to good humor. The significant damage now is to our furniture, as we finally had to put on his Elizabethan Collar to keep him from worrying the cast, and his crashing around the house with it is quite traumatic to things leather, wood and plastic.
But no: he did not fracture anything: he had a carpal hyperextension - that is, he stretched the ligaments that span his "wrist" to the point that they never again will be able to perform their appropriate functions.
To treat, all "joints" within the carpal ("wrist") area are indeed packed with bone marrow, which was donated from the upper humerus. In addition, a st.steel splint now spans the carpals, screwed in to the metacarpals at one side and the lower radius/ulna on the other. Eventually, the marrow will induce the formation of bone mass, thus fusing the entire carpal area into what is effectively a solid bone mass. That, plus the steel splint, will give him immense strength - but loss of flexibility - at that "wrist". He'll likely have a bit of difficulty when crashing through tundra, as it is more difficult to lift or even flex the left paw; other than that if (WHEN!) he fully heals, his job as Official Cabin Greeter, and full-time mattress tester, will be unimpaired.
And the link to you, Huntjo, is that both his surgeon here as well as our 'normal' vet surgeon back in Alaska both trained at Fort Collins's CSU Vet School. Thanks!
