Question

which of the following most accurately represents the arthrokinematics during elbow flexion?
a) posterior roll, posterior glide
b) posterior roll, anterior glide
c) anterior roll, anterior glide
d) anterior roll, posterior glide

Explanation:

During elbow flexion, the radius and ulna roll posteriorly on the humerus. According to the concave - convex rule, when the convex surface (humerus) is fixed and the concave surface (radius and ulna) moves, the roll and glide occur in opposite directions. So, if there is a posterior roll, there should be an anterior glide.

Answer:

B. Posterior roll, anterior glide