title: Patellar mobility can be reproducibly measured using ultrasound.
abstract: The present study was performed to examine the reliability of ultrasound in evaluating patellar mobility in the superior-inferior direction. Twelve healthy men volunteered for the study. Patellar mobility in the superior-inferior direction during isometric knee extension contraction with the knee immobilized in a semi-flexed knee brace was measured using ultrasound. Both intra-observer and inter-observer reliability were assessed by intra-class correlation coefficients (ICCs). Bland-Altman analysis was used for assessing agreement between measurements. ICC values were excellent for both intra-observer and inter-observer reliability at 0.97 and 0.93, respectively. In 95 % of measurements, the same observer measured within -0.55 to 0.61 mm, while different observers measured within -0.82 to 0.85 mm. In conclusion, patellar mobility in the superior-inferior direction during an isometric knee extension exercise can be reproducibly measured using ultrasound.
  VI (basic study of a novel evaluation method).
authors.affiliation: Department of Rehabilitation, Osaka Rosai Hospital, 1179-3 Nagasone-cho, Kita-ku, Sakai, Osaka, 597-8025, Japan, takanamoto2@gmail.com.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kanamoto
authors.forename: Yoshinari
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Yasukazu
authors.initials: Y
authors.lastname: Yonetani
authors.forename: Keisuke
authors.initials: K
authors.lastname: Kita
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Amano
authors.forename: Masashi
authors.initials: M
authors.lastname: Kusano
authors.forename: Mie
authors.initials: M
authors.lastname: Fukamatsu
authors.forename: Shinji
authors.initials: S
authors.lastname: Hirabayashi
authors.forename: Shuji
authors.initials: S
authors.lastname: Horibe
mesh_terms: D000328:Adult; D064368:Healthy Volunteers; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000502:physiology*; D008297:Male; D015588:Observer Variation; D010329:Patella / Q000000981:diagnostic imaging / Q000502:physiology*; D017847:Patellar Ligament / Q000000981:diagnostic imaging*; D016059:Range of Motion, Articular / Q000502:physiology*; D015203:Reproducibility of Results; D014463:Ultrasonography