elbow

Question 1

Flexion

Answer 1

Soft tissue apposition of the anterior forearm & upper arm; coronoid process contacting coronoid fossa & the radial head contacting the radial fossa; tension in the posterior capsule & triceps

Question 2

extension

Answer 2

Olecranon process contacting the olecranon fossa; tension in the elbow flexors & anterior joint capsule

Question 3

supination of forearm

Answer 3

Tension in the pronator muscles, quadrate lig, palmar radioulnar lig of the inferior radioulnar joint, oblique cord, & interosseous membrane.

Question 4

pronation of forearm

Answer 4

Contact of the radius on the ulna; tension in the quadrate lig, dorsal radioulnar lig of the inferior radioulnar joint, interosseous membrane; supinator & biceps brachii muscles w/ elbow in extension