title: Medial patellofemoral ligament reconstruction for recurrent patellar instability.
abstract: The purpose of this study was to determine the value of reconstruction of the medial patellofemoral ligament (MPFL) in the treatment of recurrent patellar dislocation and subluxation. We retrospectively reviewed 40 randomised patients with recurrent patellar dislocation or subluxation, who had undergone realignment surgery from July 1999 to December 2001. Group E consisted of 20 patients who had undergone an Elmslie-Trillat procedure. In Group M, also consisting of 20 patients, the Elmslie-Trillat procedure was combined with reconstruction of the MPFL. Pre and postoperative data were collected and compared. At follow-up after 2 years, the apprehension sign remained positive in 6 knees of Group E, but in none of Group M. On a stress skyline radiograph, stability was significantly better in Group M than in Group E. Based on these findings, it appears that reconstruction of the MPFL is a useful addition to the treatment of recurrent patellar dislocation and subluxation.
authors.affiliation: Department of Orthopaedic Surgery, Gunma Sports Medicine Research Center, Gunma, Japan. mikashima@mwb.biglobe.net.jp
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Mikashima
authors.forename: Masashi
authors.initials: M
authors.lastname: Kimura
authors.forename: Yasukazu
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Hiroto
authors.initials: H
authors.lastname: Asagumo
authors.forename: Taisuke
authors.initials: T
authors.lastname: Tomatsu
mesh_terms: D000293:Adolescent; D000328:Adult; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000601:surgery; D008297:Male; D008875:Middle Aged; D031222:Patellar Dislocation / Q000175:diagnosis* / Q000601:surgery*; D017847:Patellar Ligament / Q000503:physiopathology / Q000601:surgery*; D016059:Range of Motion, Articular / Q000502:physiology; D019651:Plastic Surgery Procedures / Q000379:methods*; D020127:Recovery of Function; D012008:Recurrence; D012189:Retrospective Studies; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome