title: [Reconstruciton of medial patellofemoral ligament (MPFL) for the treatment of recurrent patellar dislocation].
abstract: OBJECTIVE
  To evaluate the middle term effectiveness of medial patellofemoral ligament (MPFL) reconstruction for the treatment of recurrent patellar dislocation.
  
  
  METHODS
  From February 2007 to January 2010, 65 patients including 6 males and 59 females with recurrent patellar dislocation received the MPFL reconstruction. The reconstruction was performed using ipsilateral semitendinosis tendon to restore the damaged MPFL. Patients were evaluated pre-operatively and post-operatively by physical and subjectively with the IKDC (International Knee Documentation Committee), Tegner, and Lysholm questionnaires and radiographic examination.
  
  
  RESULTS
  The average follow-up duration was 20 months (ranged, 15 to 23 months). No recurrent episodes of dislocation or subluxation occurred. A firm endpoint to lateral patellar translation was noted in all patients at most recent follow-up. The Lysholm subjective knee evaluation score improved from (60.6 +/- 3.7) preoperatively to (89.8 +/- 4.6) postoperatively; and Tegner scores improved from (3.6 +/- 0.4) to (5.6 +/- 0.3), IKDC from (40.0 +/- 3.5) to (82.0 +/- 3.6). Radiographic evaluation demonstrated improvements in the congruence and sulcus femoral angles.
  
  
  CONCLUSIONS
  MPFL reconstruction is an effective surgical procedure for the treatment of recurrent patellar dislocation.
authors.affiliation: Department of Orthopaedics, the Second Hospital Affiliated to Lanzhou University, Lanzhou 730030, Gansu, China.
authors.forename: Xiang-Dong
authors.initials: XD
authors.lastname: Yun
authors.forename: Ya-Yi
authors.initials: YY
authors.lastname: Xia
authors.forename: Meng
authors.initials: M
authors.lastname: Wu
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Hua
authors.initials: H
authors.lastname: Han
authors.forename: Cheng-Jun
authors.initials: CJ
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D005260:Female; D005269:Femur / Q000601:surgery*; D006801:Humans; D016268:Internal Fixators; D008022:Ligaments / Q000601:surgery*; D008297:Male; D010329:Patella / Q000601:surgery; D031222:Patellar Dislocation / Q000601:surgery*; D019651:Plastic Surgery Procedures; D055815:Young Adult