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Medial Closed Wedge Distal Femoral Osteotomy Using a Novel Plate With an Optimal Compression System

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Title: Medial Closed Wedge Distal Femoral Osteotomy Using a Novel Plate With an Optimal Compression System
Authors: Nakamura, Ryuichi Browse this author
Akiyama, Takenori Browse this author
Takeuchi, Ryohei Browse this author
Nakayama, Hiroshi Browse this author
Kondo, Eiji Browse this author →KAKEN DB
Issue Date: Jun-2021
Publisher: Elsevier
Journal Title: Arthroscopy Techniques
Volume: 10
Issue: 6
Start Page: E1497
End Page: E1504
Publisher DOI: 10.1016/j.eats.2021.02.016
Abstract: Medial closed wedge distal femoral osteotomy (MCWDFO) has been widely performed for lateral-compartment osteoarthritis since the development of a biplanar osteotomy technique using existing MCWDFO-specific plates. To further improve this system and the technique, we have developed a newly designed MCWDFO plate (TriS-MDFO; Olympus Terumo Biomaterials). The improved shape of the plate consists of a larger head-shaft angle to fit the distal femur after MCWDFO, more distally oriented distal screws to enable longer screw insertion, and a diamond-shaped plate head to avoid interference with the medial patellofemoral ligament. Technically, to overcome the difficulty in inserting proximal screws through the vastus medialis muscle, a cannulated screw system was employed. This system can prevent difficulties in removing the screw due to cross-threading when plate removal is required. Furthermore, we designed a novel compression hook device with a bulb-shaped head to hook on a screw hole to apply a compressive force to the osteotomized site. On the plate side, a characteristic 1.5 mm-thickness stopper is installed to prevent slippage of the hook device. This optimal compression system can minimize the risk of lateral hinge fracture during the compression procedure. These improvements in the TriS-MDFO may increase the ease and safety of MCWDFO.
Type: article
Appears in Collections:北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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