title: Single-leaf partial meniscectomy in extensive horizontal tears of the discoid lateral meniscus: Does decreased peripheral meniscal thickness affect outcomes? (Mean four-year follow-up).
abstract: BACKGROUND
  To evaluate whether single-leaf partial meniscectomy in horizontal tears along the entire discoid lateral meniscus has any advantages in clinical and radiological results compared with other meniscectomies in discoid lateral meniscus.
  
  
  METHODS
  A total of 145 patients with a horizontal tear pattern in symptomatic lateral discoid meniscus were retrospectively reviewed. Twenty-seven patients had undergone full-extent single-leaf partial meniscectomy (group A), 60 had undergone conventional partial meniscectomy (saucerization) maintaining peripheral meniscal height (group B), and 58 patients had undergone total meniscectomy (group C). Each patient was evaluated with the Lysholm knee score, International Knee Documentation Committee (IKDC) subjective grading, and modified Kellgren-Lawrence grade in plain radiography at their last follow-up.
  
  
  RESULTS
  Group C had inferior functional results to groups A and B on the Lysholm knee score and IKDC subjective score. There was no significant difference between groups A and B. Group C fared significantly worse than groups A and B (p=0.003, p<0.001) by modified Kellgren-Lawrence grade.
  
  
  CONCLUSIONS
  With regard to clinical and radiological evaluations in lateral discoid meniscus tears, the full-extent single-leaf partial meniscectomy group had no adverse results compared with the total meniscectomy group and was not significantly different compared to the conventional partial meniscectomy group.
  
  
  METHODS
  Cohort study.
  
  
  METHODS
  Level III, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
authors.affiliation: Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Daejeon 34943, Republic of Korea.
authors.forename: Se-Won
authors.initials: SW
authors.lastname: Lee
authors.affiliation: Department of Orthopedic Surgery, Severance Hospital, Arthroscopy and Joint Research Institute, Yonsei University, College of Medicine, Seoul 03722, Republic of Korea.
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Chun
authors.affiliation: Department of Orthopedic Surgery, Severance Hospital, Arthroscopy and Joint Research Institute, Yonsei University, College of Medicine, Seoul 03722, Republic of Korea.
authors.forename: Chong-Hyuk
authors.initials: CH
authors.lastname: Choi
authors.affiliation: Department of Orthopedic Surgery, Yonsesarang Hospital, Seoul 06698, Republic of Korea.
authors.forename: Sung-Jae
authors.initials: SJ
authors.lastname: Kim
authors.affiliation: Department of Orthopedic Surgery, Severance Hospital, Arthroscopy and Joint Research Institute, Yonsei University, College of Medicine, Seoul 03722, Republic of Korea.
authors.forename: Min
authors.initials: M
authors.lastname: Jung
authors.affiliation: Department of Orthopedic Surgery, Severance Hospital, Arthroscopy and Joint Research Institute, Yonsei University, College of Medicine, Seoul 03722, Republic of Korea.
authors.forename: Joon-Woo
authors.initials: JW
authors.lastname: Han
authors.affiliation: Department of Orthopedic Surgery, Gangnam Severance Hospital, Arthroscopy and Joint Research Institute, Yonsei University, College of Medicine, Seoul 06273, Republic of Korea. Electronic address: orthohwan@gmail.com.
authors.forename: Sung-Hwan
authors.initials: SH
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D001182:Arthroscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008592:Menisci, Tibial / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D008875:Middle Aged; D012189:Retrospective Studies; D000070600:Tibial Meniscus Injuries / Q000503:physiopathology / Q000601:surgery*; D055815:Young Adult
keywords: Discoid; Horizontal tear; Meniscectomy; Meniscus