Client Education Unfortunately the cost of treatment for septic arthritis is expensive s as well as lengthy, so it is important to remember this when monitoring the foalÕs progress. The prognosis is guarded and only 26% of foals went on to perform their intended function. Also, it is possible that this problem will occur even after the current treatment is completed. Stall rest for at least 2 weeks is essential and activity should be strictly monitored after that time. Please feel free to contact us at any time, especially because of the serious nature of this condition. You have an appointment in one week for the first recheck.