Clinical results of arthroscopic surgery in patients over 50 years of age--what viability does it have as a joint preservative surgery? - Mitsutoshi Moriya; Kensuke Fukushima; Katsufumi Uchiyama; Naonobu Takahira; Takeaki Yamamoto; Yojiro Minegishi; Masashi Takaso (Journal of Orthopaedic Surgery & Research, 2017)