Anesthetized with Iso/O2 via mask induction. No concerns under anesthesia.  Uneventful recovery.  
Radiographs showed nearly complete healing of the initial R ulnar fracture.  There is bridging at the second ulnar fracture, but there is still a visible line of lucency present. Recommended to wait an additional 5-7 days before starting to destabilize the fixator.  Alignment is good. No concerns for infection.

Distal IM pin has broken. There is a new thin fracture present in the distal ulna that was likely formed in the same event that broke the distal pin. There is good callous formation along the original ulnar fracture. Remodeling is occurring. There is no concern at this time for osteomyelitis

An incision was made over the fracture and the callus formation
at the fracture was debrided. A pin was introduced on the caudal
aspect of the ulna distal to the olecrannon at a point between
the bases of the second and third secondary feathers at a near
right angle to the long axis. With a back-and-forth rotation,
the blades of the trocar were embedded into the cortex about
two-thirds of its depth. A 3/32in IM pin was introduced aligned
with the long axis while continuoing the rotations of the chuck
so that an elongated hole is cut in the bone to the level of
the fracture. The fracture was reduced and the pin was driven
towards the distal end of the bone stopping short of the end
of the ulna. A 1.6mm ESF pin was inserted in the proximal fragment
of the ulna between the olecrannon and the point of entry of
the IM pin so that the ESF pin doesn't share the medullary space
with the IM pin. A 1.1mm ESF pin was inserted in the distal fragment
so that it doesn't share the medullary space with the IM pin.
The IM pin was bent at a 90 degree angle to the bone. A plastic
tube was placed over the IM and ESF pins and filled with acrylic
that was cured for 12 minutes with the wing folded against the
body to establish rotational alignment. All pins were cut. The
incision over the fracture was closed using 5-0 PDS suture in
a simple continuous pattern. A bandage was applied over the ESF
using cast padding, tegaderm, and vet wrap. The patient recovered
uneventfully.

R midshaft ulnar oblique fracture was confirmed. Callus formation involving the radius was more easily seen on these views than the images sent from previous facility. Could not confirm spiral description based on images.