title: Analysis of stress distribution in the humeroradial joint.
abstract: Stress distribution in the humeroradial joint was analyzed with pressure-sensitive film, a tactile sensor, and by the three-dimensional finite element method. Fifteen cadaveric elbows with minimal osteoarthritic changes were loaded perpendicular to the articular surface of the radial head in the full pronation, supination, and neutral positions from 0 degrees to 90 degrees. Finite element analysis of stress distribution in the joint was based on a model of the same conditions. The patterns of stress distribution were similar with all three analysis methods. High stress was concentrated laterally in supination, and medially in the neutral and pronation positions. The results of the analyses closely resembled those found in some studies of the pathophysiology of degenerative changes in the humeroradial joint.
authors.affiliation: Department of Orthopaedic Surgery, Okayama University Medical School, 2-5-1 Shikata-cho, Okayama 700-8558, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Takatori
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Hashizume
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Wake
authors.forename: Hajime
authors.initials: H
authors.lastname: Inoue
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Nagayama
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D002102:Cadaver; D004551:Elbow Joint / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009985:Orthopedics / Q000379:methods; D016059:Range of Motion, Articular / Q000502:physiology*; D012680:Sensitivity and Specificity; D013314:Stress, Mechanical; D013718:Tensile Strength