mild bridging of the fractured segment over the right ulna, fracture line still prominent, no radiolucencies that indicate there is poor healing ability, pins still acceptable. Subjective minimal improvement of the fracture. 

Shoulder osteoarthritis static, some osteophytes present outside of the articular surface. 

Fracture is still evident in radiographs. Bony callousing has begun but there is still significant repair that the wing needs to undergo before ESF can be removed. A small piece of bone appears to be attached to the distal end of the proximal fragment of the ulna and is not attached to the proximal end of the distal fragment, but it does appear to be forming a bony callous here too.

Anesthetized with Iso/O2 via mask induction. No concerns under anesthesia.  Uneventful recovery.  
Radiographs showed progressive healing of the R ulnar fracture but there is still a line of lucency at the fracture site. Alignment is good. No concerns for infection. Evaluate again in 1-2 weeks.

No abnormalities are noted in the thoracic girdle.  Could not obtain completely symmetrical imaging at the proximal humerus for comparison of R & L sides, but no obvious abnormalities seen.  There is a small osteophyte at the caudal aspect of the glenoid on the R scapula. No other abnormalities noted.

Clinical interpretation: Chronic OA at the R shoulder may be exacerbated by the fracture and increased weight of the wing from the ex-fix apparatus.  

No anesthetic complications

Right ulna fracture repair with IM pin and ESF tie in was performed
under inhalant anesthesia. The skin around the ulna was moderately
bruised and swollen. The area over the fracture site was dissected
down to the level of the fracture to place the pieces of the
ulna in apposition. A 2.4mm IM pin was inserted into the proximal
ulna and advanced distally in the medullary cavity. Radiographs
were taken to ensure we had advanced far enough through the bone.
Two 1.6mm ESF pins were placed, one distal and one proximal to
the IM pin. The skin around the fracture site was closed with
4-0 PDS and simple interrupted sutures. The skin on the distal
aspect of the ulna had openened during surgical prep so this
area was also closed with a single simple interrupted suture.
The IM pin was then bent to a 90 degree angle at the distal aspect
of the ulna. Tubing was placed over all three pins and filled
with an acrylic gel and left to harden. The pins were then cut
down to the level  of the tubing. Bandage wrap was applied over
the external fixator and this was then covered in vetwrap. The
patient recovered uneventfully.

Fracture of the mid diaphysis of the right ulna. Lucency in the right carpus is believed to be artifact from the rotation of the fracture in the ulna. No fracture seen in the right carpus. Soft tissue swelling present in the carpus. Entire right wing seems swollen to some degree.