title: Functional reconstruction of the knee extension mechanism following wide resection for a prepatellar soft-tissue sarcoma: A case report.
abstract: Functional reconstruction following a wide resection for a malignant musculoskeletal tumor is often challenging, particularly for juxta-articular tumors. The current study describes a novel surgical procedure for the functional reconstruction of the knee extensor mechanism with a pedicle frozen auto-bone and -tendon graft, in a case of prepatellar clear cell sarcoma. The active range of motion of the knee was from 0-135°, and the extension muscular strength of the knee was evaluated as 5/5 by a manual muscle test at 14 months post-surgery (International Society of Limb Salvage score, 73%); this was improved compared with a similar procedure previously described by Muramatsuet al. This procedure must be considered following the wide resection of juxta-articular malignant musculoskeletal tumors.
authors.affiliation: Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan.
authors.forename: Michiyuki
authors.initials: M
authors.lastname: Hakozaki
authors.affiliation: Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Yamada
authors.affiliation: Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Tajino
authors.affiliation: Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima 960-1295, Japan.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Konno
keywords: biological reconstruction; functional reconstruction; juxta-articular malignant tumor; knee extension mechanism; pedicle frozen autograft