title: Extension disturbance of the little finger in amateur piano players: two case reports.
authors.affiliation: Department of Orthopaedic Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50 Minami-koshigaya, Koshigaya, Saitama 343-8555 Japan.
authors.forename: Kazufumi
authors.initials: K
authors.lastname: Sano
authors.affiliation: Department of Orthopaedic Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50 Minami-koshigaya, Koshigaya, Saitama 343-8555 Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Taguchi
authors.affiliation: Department of Orthopaedic Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50 Minami-koshigaya, Koshigaya, Saitama 343-8555 Japan.
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Hashimoto
authors.affiliation: Department of Orthopaedic Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50 Minami-koshigaya, Koshigaya, Saitama 343-8555 Japan.
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Kimura
authors.affiliation: Department of Orthopaedic Surgery, Dokkyo Medical University Koshigaya Hospital, 2-1-50 Minami-koshigaya, Koshigaya, Saitama 343-8555 Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Ozeki