title: [High recurrence and good functional results after arthroscopic resection of pigmented villonodular synovitis].
abstract: BACKGROUND
  Pigmented villonodular synovitis (PVS) is a synovial proliferation disorder of uncertain aetiology, with some controversy as regards its proper treatment. The purpose of the study was to evaluate the functional outcome and recurrence rate in a series of patients diagnosed with both the diffuse and the localised type of PVS and treated by arthroscopic resection.
  
  
  METHODS
  Twenty-four patients diagnosed with PVS were retrospectively assessed. There were 11 cases with the diffuse type, and 13 cases with the localised type of PVS. They were followed-up for a median of 60 months (range, 34-204). They underwent arthroscopic synovectomy, and were functionally evaluated with IKDC, WOMET, and Kujala scores.
  
  
  RESULTS
  There was recurrence in 8 out of 13 (61.5%) cases with the diffuse type of PVS. Two of these patients were treated with radiation. One patient underwent surgical resection with an open procedure due to extra-articular involvement. The remaining 5 patients underwent a second arthroscopic resection, and no recurrence was subsequently observed. Cases with localised PVS did not recur after a single arthroscopic resection. IKDC, WOMET and Kujala scores improved by 30.6, 37.4 and 34.03 points, respectively.
  
  
  CONCLUSIONS
  Pigmented villonodular synovitis treated by arthroscopic resection showed good functional results at mid-term follow-up. A single arthroscopic resection was sufficient to treat the localised PVS, whereas the diffuse type of PVS required a second arthroscopic resection in most cases, due to its high rate of recurrence.
authors.affiliation: Institut Català de Traumatologia i Medicina de l'Esport (ICATME)-Hospital Universitari Quirón-Dexeus, Universitat Autònoma de Barcelona, Barcelona, España. Electronic address: isartanna@gmail.com.
authors.forename: A
authors.initials: A
authors.lastname: Isart
authors.affiliation: Institut Català de Traumatologia i Medicina de l'Esport (ICATME)-Hospital Universitari Quirón-Dexeus, Universitat Autònoma de Barcelona, Barcelona, España; Servicio de Cirugía Ortopédica y Traumatología, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, España.
authors.forename: P E
authors.initials: PE
authors.lastname: Gelber
authors.affiliation: Servicio de Cirugía Ortopédica y Traumatología, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, España.
authors.forename: M
authors.initials: M
authors.lastname: Besalduch
authors.affiliation: Institut Català de Traumatologia i Medicina de l'Esport (ICATME)-Hospital Universitari Quirón-Dexeus, Universitat Autònoma de Barcelona, Barcelona, España.
authors.forename: X
authors.initials: X
authors.lastname: Pelfort
authors.affiliation: Institut Català de Traumatologia i Medicina de l'Esport (ICATME)-Hospital Universitari Quirón-Dexeus, Universitat Autònoma de Barcelona, Barcelona, España.
authors.forename: J I
authors.initials: JI
authors.lastname: Erquicia
authors.affiliation: Institut Català de Traumatologia i Medicina de l'Esport (ICATME)-Hospital Universitari Quirón-Dexeus, Universitat Autònoma de Barcelona, Barcelona, España.
authors.forename: M
authors.initials: M
authors.lastname: Tey-Pons
authors.affiliation: Institut Català de Traumatologia i Medicina de l'Esport (ICATME)-Hospital Universitari Quirón-Dexeus, Universitat Autònoma de Barcelona, Barcelona, España; Servicio de Cirugía Ortopédica y Traumatología, Parc de Salut Mar, Universitat Autònoma de Barcelona, Barcelona, España.
authors.forename: J C
authors.initials: JC
authors.lastname: Monllau
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D005260:Female; D005500:Follow-Up Studies; D006305:Health Status Indicators; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D020127:Recovery of Function; D012008:Recurrence; D012189:Retrospective Studies; D013586:Synovitis, Pigmented Villonodular / Q000503:physiopathology / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult
keywords: Arthroscopy; Artroscopia; Knee; Rodilla; Sinovitis villonodular; Villonodular synovitis