title: [Results of arthrodiastasis in postraumatic ankle osteoarthritis in a young population: prospective comparative study].
abstract: BACKGROUND
  The most common cause of osteoarthritis of the ankle is post-traumatic, and although tibiotalar arthrodesis remains the surgical gold standard, a number of techniques have been described to preserve joint mobility, such as joint distraction arthroplasty or arthrodiastasis.
  
  
  OBJECTIVE
  To evaluate the functional outcome and changes in Visual Analogue Scale (VAS) for pain after the application of the distraction arthroplasty for post-traumatic ankle osteoarthritis.
  
  
  METHODS
  A prospective comparative study of a group of 10 young patients with post-traumatic ankle osteoarthritis treated by synovectomy and arthrodiastasis, compared to a control group of 10 patients treated by isolated synovectomy. Results were calculated using the AOFAS scale and the VAS for pain before and after treatment.
  
  
  RESULTS
  As regards the pain measured by VAS, no difference was observed between the two groups before surgery (P=.99), but there was a difference at 3 months (P<.001), 6 months (P=.005), and 12 months (P=.006). No differences were observed in the AOFAS scale between the two groups before surgery (P=.99), or at 3 months (P<.99), but there was a difference at 6 months (P<.001).
  
  
  CONCLUSIONS
  Ankle arthrodiastasis is effective in reducing pain in post-traumatic ankle arthropathy, and is superior to isolated synovectomy.
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario de Canarias, La Laguna, Tenerife, España; Facultad de Medicina, Universidad de La Laguna, La Laguna, Tenerife, España; Unidad de Tobillo y Pie, Hospital Universitario de Canarias, La Laguna, Tenerife, España. Electronic address: herrera42@gmail.com.
authors.forename: M
authors.initials: M
authors.lastname: Herrera-Pérez
authors.forename: J L
authors.initials: JL
authors.lastname: Pais-Brito
authors.forename: J
authors.initials: J
authors.lastname: de Bergua-Domingo
authors.forename: M
authors.initials: M
authors.lastname: Aciego de Mendoza
authors.forename: A
authors.initials: A
authors.lastname: Guerra-Ferraz
authors.forename: P
authors.initials: P
authors.lastname: Cortés-García
authors.forename: B
authors.initials: B
authors.lastname: Déniz-Rodríguez
mesh_terms: D000328:Adult; D016512:Ankle Injuries / Q000150:complications; D000843:Ankle Joint / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019637:Orthopedic Procedures / Q000379:methods; D010003:Osteoarthritis / Q000209:etiology / Q000601:surgery*; D011446:Prospective Studies; D016896:Treatment Outcome; D055815:Young Adult
keywords: Ankle arthrodesis; Ankle arthrodiastasis; Artrodesis tibioastragalina; Artrodiastasis de tobillo; Artroplastia total de tobillo; Artrosis postraumática de tobillo; Post-traumatic ankle osteoarthritis; Total ankle replacement