Inclusion Criteria:  ≥ 18 years Diagnosis of osteoarticular infection Treatment with at least one oral antibiotic for a minimum expected duration ≥ 6 weeks with an expected end of treatment date Patient who was informed and did not object to participate in the study  Exclusion Criteria:  Treatment for BJI with oral antibiotic without end of treatment date treatment for BJI with parenteral antibiotic only patient who doesn't have a telephone number or who doesn't want to give it Adults subject to a legal protection measure Pregnant or breastfeeding women