title: [Arthroscopic partial meniscectomy for medial meniscal tear in late middle-aged adults].
abstract: OBJECTIVE
  To study the results of arthroscopic partial meniscectomy for medial meniscal tear in late middle-aged adults.
  
  
  METHODS
  From October 2010 to October 2012,49 patients meeting inclusion criteria were treated with arthroscopic partial meniscectomy for medial meniscal tear. There were 31 males and 18 females,with an average age of (55.3±2.8) years old. There were 22 left knees and 27 right knees. The average flexion angle was (116.01±12.03)°. The pre-operative HSS Knee Score was 48.73±8.43, and the Lysholm score was 63.95±5.45. The patients were followed up and evaluated. All the patients received a standard surgery, in which the torn tissue was removed, and the anterior part of the meniscus was left in situ.
  
  
  RESULTS
  All the surgeries were successful with no serious complications. All the patients were followed up,and the duration ranged from 12 to 36 months. All the patients had 5 degrees of muscle strength. The average flexion angle was (136.77±18.56)°. There was significant difference between the two angles before operation and after operation. The pre-operative HSS Knee Score was 90.17±4.10, and the Lysholm score was 87.84±5.16. Statistically, the difference between preoperative score and the postoperative score was significant.
  
  
  CONCLUSIONS
  Arthroscopic partial meniscectomy is a good option for medial meniscal tear in late middle-aged adults. Operative indication is crucial and the excellent surgical technique is also critical for the good clinical outcome. All the patients could get good clinical results, although there are some patients with motion restrictions in the early stage after operation.
authors.forename: Jin-song
authors.initials: JS
authors.lastname: Liu
authors.forename: Zhi-yao
authors.initials: ZY
authors.lastname: Li
mesh_terms: D001182:Arthroscopy / Q000379:methods*; D005260:Female; D006801:Humans; D007718:Knee Injuries / Q000601:surgery*; D008297:Male; D008592:Menisci, Tibial / Q000503:physiopathology / Q000601:surgery; D008875:Middle Aged; D000070600:Tibial Meniscus Injuries