title: Iliotibial band irritation caused by the EndoButton after anatomic double-bundle anterior cruciate ligament reconstruction: report of two cases.
abstract: Two patients underwent arthroscopic anatomic double-bundle anterior cruciate ligament (ACL) reconstruction using the EndoButton for femoral fixation. The femoral tunnels were created by the inside-out technique through a far anteromedial portal. The patients postoperatively developed moderate lateral knee pain without instability. At the second-look arthroscopic evaluation, the two EndoButtons were removed. Both patients were completely asymptomatic several months after implant removal, implying that the EndoButtons caused the mechanical irritation in the iliotibial band. This is the first report describing removal of EndoButtons because of pain caused by friction with the iliotibial band. In anatomic ACL reconstruction, if the femoral tunnel exit is positioned near the lateral femoral epicondyle, care should be taken to prevent iliotibial band friction syndrome that could result because of the EndoButton.
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan. takeos-tky@umin.ac.jp
authors.forename: Shuji
authors.initials: S
authors.lastname: Taketomi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Inui
authors.forename: Jinso
authors.initials: J
authors.lastname: Hirota
authors.forename: Kensuke
authors.initials: K
authors.lastname: Nakamura
authors.forename: Takaki
authors.initials: T
authors.lastname: Sanada
authors.forename: Hironari
authors.initials: H
authors.lastname: Masuda
authors.forename: Sakae
authors.initials: S
authors.lastname: Tanaka
authors.forename: Takumi
authors.initials: T
authors.lastname: Nakagawa
mesh_terms: D000328:Adult; D059549:Anterior Cruciate Ligament Reconstruction / Q000295:instrumentation*; D018771:Arthralgia / Q000209:etiology* / Q000601:surgery; D001182:Arthroscopy; D020878:Device Removal; D005260:Female; D005269:Femur / Q000601:surgery; D017276:Friction; D006801:Humans; D008297:Male; D008875:Middle Aged; D009984:Orthopedic Fixation Devices / Q000009:adverse effects*