title: Arthroscopic patelloplasty and circumpatellar denervation for the treatment of patellofemoral osteoarthritis.
abstract: BACKGROUND
  Patellofemoral osteoarthritis commonly occurs in older people, often resulting in anterior knee pain and severely reduced quality of life. The aim was to examine the effectiveness of arthroscopic patelloplasty and circumpatellar denervation for the treatment of patellofemoral osteoarthritis (PFOA).
  
  
  METHODS
  A total of 156 PFOA patients (62 males, 94 females; ages 45-81 years, mean 66 years) treated in our department between September 2012 and March 2013 were involved in this study. Clinical manifestations included recurrent swelling and pain in the knee joint and aggravated pain upon ascending/descending stairs, squatting down, or standing up. PFOA was treated with arthroscopic patelloplasty and circumpatellar denervation. The therapeutic effects before and after surgery were statistically evaluated using Lysholm and Kujala scores. The therapeutic effects were graded by classification of the degree of cartilage defect.
  
  
  RESULTS
  A total of 149 cases were successfully followed up for 14.8 months, on average. The incisions healed well, and no complications occurred. After surgery, the average Lysholm score improved from 73.29 to 80.93, and the average Kujala score improved from 68.34 to 76.48. This procedure was highly effective for patients with cartilage defects I-III but not for patients with cartilage defect IV.
  
  
  CONCLUSIONS
  For PFOA patients, this procedure is effective for significantly relieving anterior knee pain, improving knee joint function and quality of life, and deferring arthritic progression.
authors.forename: Gang
authors.initials: G
authors.lastname: Zhao
authors.affiliation: Department of Orthopedics, Chinese People's Liberation Army General Hospital, Beijing 100853, China.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Liu
authors.forename: Bangtuo
authors.initials: B
authors.lastname: Yuan
authors.forename: Xuezhen
authors.initials: X
authors.lastname: Shen
authors.forename: Feng
authors.initials: F
authors.lastname: Qu
authors.forename: Jiangtao
authors.initials: J
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Qi
authors.forename: Juanli
authors.initials: J
authors.lastname: Zhu
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002358:Cartilage, Articular / Q000294:innervation / Q000601:surgery; D003714:Denervation / Q000379:methods*; D006801:Humans; D007719:Knee Joint / Q000294:innervation / Q000601:surgery; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D057071:Patellofemoral Joint / Q000294:innervation / Q000601:surgery; D011788:Quality of Life