title: [Endoscopic technique with two posterior portals for treatment of the posterior pathology of the ankle. Technique description and case report].
abstract: Symptomatic Os trigonum requires an initial conservative treatment, if clinical improvement cannot be obtained, then surgical treatment is performed with a traditional open approach. We describe an endoscopic technique: with the patient on prone position two portals are made, the first is posterolateral just at the tip of the fibula just lateral to the Achilles tendon; the second portal is posteromedial and at the same level to the first one but medial to the Achilles tendon. With the use of this technique, a wide and safe working field is obtained for the resection of the Os trigonum. We present the case of a 17 year-old classical ballet dancer with a symptomatic Os trigonum to whom an endoscopic resection of Os trigonum was done with the described technique, her clinical evolution was excellent and she could rein-corporate to her artistic activity at four weeks follow-up.
  
  
  CONCLUSIONS
  The endoscopic technique described is a therapeutic option that allows the effective and safe treatment of the posterior compartment of the ankle with good functional results.
authors.affiliation: Instituto Nacional de Rehabilitación, DF México. arturo@mirodilla.com
authors.forename: Arturo
authors.initials: A
authors.lastname: Almazán Díaz
authors.forename: Miguel
authors.initials: M
authors.lastname: González Thompson
authors.forename: César
authors.initials: C
authors.lastname: Bravo Maytorena
authors.forename: Karina
authors.initials: K
authors.lastname: Valdez
authors.forename: Suárez
authors.initials: S
authors.lastname: Luis Sierra
authors.forename: José Clemente Ibarra
authors.initials: JC
authors.lastname: Ponce de León
mesh_terms: D000293:Adolescent; D000843:Ankle Joint; D001182:Arthroscopy / Q000379:methods*; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis* / Q000628:therapy*