Question

becky worked at a diner for her summer job. a customer ordered the breakfast special which included pancakes, eggs, and bacon. as becky was in the kitchen flipping pancakes her forearm rotated toward the ceiling for a fancy backward final flip. what roll and slide mechanism did her forearm (at the elbow) undergo during this motion?
a) anterior roll and glide
b) anterior roll, posterior glide
c) posterior roll and glide

Explanation:

When the forearm rotates backward (supination), at the elbow joint, the radius (involved in forearm - movement) undergoes an anterior roll and a posterior glide to achieve this motion. This is based on the biomechanics of the elbow - forearm complex during supination.

Answer:

b) Anterior roll, posterior glide