title: [Interposition arthroplasty as treatment of osteochondritis of the second metatarsal head. A case report].
abstract: BACKGROUND
  Freiberg described this pathology in 1914, it is a relatively rare condition, it mainly affects the head of the second metatarsal. Treatment includes reduction of daily activity and use of orthoses. For surgical treatment numerous techniques exist such as: debridement, osteotomies, resection of the metatarsal head or the base of the phalanx, arthroscopic treatment, and arthroplasty.
  
  
  OBJECTIVE
  To present the case of a 31 year old female, Stage V according to the Smillie classification and to describe the surgical technique of the interposition arthroplasty that was made.
  
  
  METHODS
  Longitudinal incision of 2.5 cm in dorsal surface of metatarsophalangeal joint, identification of extensor tendon. Capsular incision, debridement and excision of osteophytes and regularization of the metatarsal head. The sinovial capsule is dissected and covered with the metatarsal head, finally sutured to the capsule in the plantar region.
  
  
  RESULTS
  The patient has 2 years from surgery and is asymptomatic with 350 of flexion and 500 of extension. On simple X-rays an adequate metatarsophalangeal space can be observed. We consider that the procedure is one more alternative for the treatment of this condition.
authors.affiliation: Médico de Base Hospital General de México SS OD Coordinador de Pie y Tobillo, Médico de Base Hospital Regional 196 IMSS. drenriquezja@hotmail.com
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Enríquez Castro
authors.forename: Gustavo
authors.initials: G
authors.lastname: Guevara Hernández
authors.forename: Genaro
authors.initials: G
authors.lastname: Estévez Díaz
mesh_terms: D000328:Adult; D001178:Arthroplasty / Q000379:methods*; D005260:Female; D006801:Humans; D008682:Metatarsal Bones; D010007:Osteochondritis / Q000601:surgery*