<prompt> Frieberg osteochondritis is INFLAMMATION of ?2nd metatarsal head2nd metatarsal base5th matatarsal head5th metatarsal base  <response>: FREIBERG INFRACTION Osteochondritis of the second metatarsal head. But may also involve 15t 3rd and 4th metatarsal heads Usually occurs following trauma. A misshapen metatarsal head frequently is an incidental radiographic finding, and careful questioning of the patient often reveals a period during adolescence when pain was noted in the forefoot. ref : maheswari 9th ed 