Osteokinematics
What are the motions of the elbow?
Flexion and Extension
What muscle(s) is/are the primary movers in elbow flexion?
Brachialis, Biceps muscles and Brachioradialis
What bone(s) make up the elbow joint?
Humerus and Ulna
At the gym, you are using the pull up bar to exercise your biceps muscles. What are the arthrokinematics of the elbow joint given that it is a close chain activity?
The the convex surface of the humeral trochlea and the concave surface of the ulna's trochlear notch, we can determine that the roll and glide are in opposite directions.
What are the motions of the forearm?
pronation and supination
What muscle(s) is/are the primary movers in elbow extension?
Triceps
Which ligament of the forearm attaches only to the ulna?
the annular ligament
During your workout, you drop down and do thirty push-ups (because you're a beast). What arm muscles are being worked out by the exercise? (Hint: what osteokinematic motion is being performed?)
Triceps (and to a much lesser degree, anconeus)
The sagittal plain and the frontal axis
What muscle(s) is/are the primary movers in forearm pronation?
Pronator Teres and Pronator Quadratus
What fossa of the humerus articulates with what process of the ulna during elbow extension?
Olecranon fossa and olecranon process
What are the plain and axis that the forearm pronates and supinates on?
Transverse plain on a vertical axis.
What muscle(s) is/are the primary movers in supination?
Supinator muscle
Other than the annular ligament, radioulnar articulation is held together by which structure?
interosseous membrane
What motions do the elbow and forearm make to pick a pen up from a desk or table top?
Elbow extension and forearm pronation.
What three nerves innervate the muscles that control the forearm?
Radial, Median and Musculocutaneous
Which bone of the forearm moves around the other during pronation and supination: the radius or the unlar?