title: Double-Layered Lateral Meniscus Accompanied by Meniscocapsular Separation.
abstract: We report an extremely rare case of double-layered lateral meniscus accompanied by meniscocapsular separation. The upper accessory meniscus was connected with the posterior horn and middle segment of the lower normal meniscus and was more mobile than the lower normal meniscus. A meniscocapsular separation was evident at the overlapping middle segment. Clinical symptoms were significantly improved by the resection of the upper accessory meniscus and the repair of the meniscocapsular separation. Careful arthroscopic analysis of other associated pathologies together with this rare abnormality was needed to achieve clinical improvement.
authors.affiliation: Department of Orthopaedic Surgery, Suzuka Kaisei Hospital, 112 Kou, Suzuka, Mie 513-8505, Japan.
authors.forename: Aki
authors.initials: A
authors.lastname: Fukuda
authors.affiliation: Department of Orthopaedic and Sports Medicine, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Akinobu
authors.initials: A
authors.lastname: Nishimura
authors.affiliation: Department of Orthopaedic Surgery, Suzuka Kaisei Hospital, 112 Kou, Suzuka, Mie 513-8505, Japan.
authors.forename: Shigeto
authors.initials: S
authors.lastname: Nakazora
authors.affiliation: Department of Orthopaedic Surgery, Suzuka Kaisei Hospital, 112 Kou, Suzuka, Mie 513-8505, Japan.
authors.forename: Ko
authors.initials: K
authors.lastname: Kato
authors.affiliation: Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan.
authors.forename: Akihiro
authors.identifier: 0000-0003-0474-4368
authors.initials: A
authors.lastname: Sudo