title: Clinical results of arthroscopic surgery in patients over 50 years of age-what viability does it have as a joint preservative surgery?
abstract: BACKGROUND
  To identify whether hip arthroscopy is a suitable option for treating hip pain in elderly patients and investigate the clinical outcomes of hip arthroscopic surgery for labrum tear and/or osteoarthritis in patients over 50 years of age.
  
  
  METHODS
  Between August 2009 and May 2014, a series of 23 patients (6 men and 17 women) with a mean age of 59 years underwent arthroscopy. We retrospectively examined the clinical records, radiographs, and outcome questionnaires from all patients. The mean follow-up period was 28 months.
  
  
  RESULTS
  The mean Japan Orthopedic Association hip score after surgery improved by a statistically significant amount. Eight patients (34.8%) were noted to have a progression of osteoarthritis (OA) diagnosed by radiograph, and one underwent THA after 13 months following arthroscopic surgery. The patients in which OA progression was noted were identified as having radiographical OA preoperatively and acetabular cartilage damage in the arthroscopic findings.
  
  
  CONCLUSIONS
  Arthroscopic surgery performed in selected patients over 50 years of age might be beneficial if classified as Tönnis grade 0 preoperatively and/or classified as Outerbridge grade II in the arthroscopic findings.
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0374, Japan. moriya0425@gmail.com.
authors.forename: Mitsutoshi
authors.identifier: http://orcid.org/0000-0001-5075-2014
authors.initials: M
authors.lastname: Moriya
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0374, Japan.
authors.forename: Kensuke
authors.initials: K
authors.lastname: Fukushima
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0374, Japan.
authors.forename: Katsufumi
authors.initials: K
authors.lastname: Uchiyama
authors.affiliation: Department of Rehabilitation, School of Allied Health Sciences, Kitasato University, Sagamihara, Japan.
authors.forename: Naonobu
authors.initials: N
authors.lastname: Takahira
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0374, Japan.
authors.forename: Takeaki
authors.initials: T
authors.lastname: Yamamoto
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0374, Japan.
authors.forename: Yojiro
authors.initials: Y
authors.lastname: Minegishi
authors.affiliation: Department of Orthopaedic Surgery, School of Medicine, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0374, Japan.
authors.forename: Masashi
authors.initials: M
authors.lastname: Takaso
mesh_terms: D000368:Aged; D001182:Arthroscopy / Q000379:methods* / Q000639:trends; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery*; D010146:Pain / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery; D012189:Retrospective Studies
keywords: Elderly patient; Hip arthroscopy; Joint preservation surgery; Osteoarthritis