Tuberculosis TB is common in countries constituting endemic areas like Morocco, spinal sites represents half of osteo-articular locations, while peripheral locations in the limbs are rare. The authors relate in this observation the case of a particular location of tuberculosis arthritis. It is osteoarthritis of the metatarsophalangeal joint of the 2nd ray of the foot. Clinical signs were characterized by a moderately painful swelling of the dorsum of the foot with slow evolution. The definitive diagnosis was histologically obtained. Clinical cure was achieved after 09 months of medical treatment.