MHonArc test archive
[db-104] 1P003 : 人体局所解剖学 回内回外時における腕橈関節の適合性
#A 人体局所解剖学 回内回外時における腕橈関節の適合性
#B A morphomechanical study of the elbow joint with
special reference to the contact area between the radial head
and the capitulum of the humerus.
#K1 さっぽろ いかだいがく いがくぶ かいぼうがく だいに
#L1 Department of Anatomy, School of Medicine, Sapporo
#K2 さっぽろ いかだいがく いがくぶ かいぼうがく だいに
#L2 Department of Anatomy, School of Medicine, Sapporo
#N gross anatomy,humero-radial joint,joint space,contct
#T Although many studies have been reported that
degeneration in the elbow joint frequently occurs from the
humero-radial joint cartilage, few have been discussed the
width of humero-radial joint space and the contact areas
between the humerus and the radius.
Resin casts of the humero-radial joint cavities of 41
joints of 44 Japanese cadavers were made with fully extended
elbows in pronation, intermediate position, and supination.
The articular surfaces of the radial heads were also observed
macroscopically to determine the degree of the degeneration.
We measured the thickness and the area of the casts, and
estimated the width of the joint space and the ratio of the
contact area to the whole surface with the aid of a computer.
The joint space width was narrow at the medial zone
in supination. As the forearm was pronated, the joint space
width was considerably reduced and the contact area was
expanded towards the posteromedial zone. The degree of the
degeneration was more severe in the anteromedial zone than in
the posterolateral zone. The contact area correlated with the
degenerated area. These findings provide a better
understanding of the mechanism of the development of the
osteoarthritis in the elbow joint.
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