Vet4 came out immediately.  I was beyond grateful!

He did an ultrasound of the back right leg and called me.  He found that Chance has Chronic Cellulitis and that there was Vascular constriction, and masses on the tendon sheath between the superficial and deep tendon sheaths.  The Doppler showed good blood flow and a thickening of the synovial lining. Hoof testers- Negative

We spoke about my opinions- MRI, Arthroscopic surgery, Regional Diffusion, Cold Compression Therapy, Nerve Block Injections, Steroid Injections

We decided  to try the Steroid Injections into the 3 Synovial masses to hopefully reduce the size and thickening.  Thus allowing us to see behind the masses to see what is actually happening.

Injections were into the Proximal Digital Flexor Tendon Sheath with 6mg Betamethasone and d100mg of Amikacon. Leg was covered with SSD and DMSO and bandaged.

Once injected, cold compression therapy for about 5 days twice a day and stall rest. Banamine daily.