Figure 5.

Phage treatment course for a patient with knee PJI caused by MSSA, included in the PHAGEinLYON Clinic programme. No surgery was performed, and Based on susceptibility testing, the patient received 5 mL of phage PP1815 (109 PFU/mL) under sonography, with a total of three injections with an interval of 1 week, in combination with antibiotics. A. Preoperative radiograph. B. Clinical image showing the presence of a draining fistula. C. Phage therapy with injection under sonography. D. Clinical status assessed at 18-month follow-up.