Kinesiology Elbow

A patient wants to extend his elbow but does not want to extend the shoulder. Which of the following muscles opposes the shoulder extension component of the motion? A) anterior deltoid B) posterior deltoid C) teres major D) brachialis

A) Anterior Deltoid

Which of the following statements about the arthrokinematics of the elbow joint is FALSE? A) during flexion in an OKC the radius rolls and glides posteriorly B) During extension in an OKC the ulna rolls and glides posteriorly C) during flexion the anterior capsule ligaments become slack D) During extension the anterior capsular ligaments become laugh.

A) during flexion in an OKC the radius rolls and glides posteriorly

With nerve roots innervate the biceps? A) C4 and C5 B) C5 and C6 C)C7 an C8 D) C6,7,8

B) C5 and C6

Which of the following statements about the arthrokinematics of the distal radioulnar joint is correct? A) During supination the ulna rolls and glides posteriorly (laterally) B) During pronation the radius rolls an glides anteriorly (medially) C) During pronation the ulna rolls anteriorly (medially) and glides posteriorly (laterally) D) During supination the radius rolls posteriorly (laterally) and glides anteriorly (medially)

B) During pronation the radius rolls and glides anteriorly (medially)

Which Of the Following statements about the elbow in incorrect? A) the axis at the elbow joint runs in an oblique direction, therefor when performing flexion the forearm moves medially B) Elbow flexion occurs in the frontal plane C) The normal carrying angle at the elbow is in valgus D) The radial head articulates with the capitulum

B) Elbow Flexion occurs in the frontal plane.

Which of the following statements about the proximal and distal radioulnar joints is FALSE? A) the proximal radioulnar joint is classified as a pivot joint B) Motion at both of these joints occur around a horizontal axis C) In supination the ulna and radius lie parallel to one another D) During pronation, the radius moves around a stationary ulna.

B) Motion at both of these joints occurs around a horizontal axis.

In an open kinetic chain, what direction does the ulna glide during extension? A) Anterior B) Posterior C) Medial D) Lateral

B) Posterior

Which of the following statements about the elbow joint is FALSE? A) Flexion ROM is normally 0-150 B) The normal end feel for extension is firm C) The radius is shorter than the ulna D) The biceps barite is innervated by the musculocutaneous nerve.

B) The normal end feel for extension is firm.

During what motion does the lateral collateral ligament become taught? A) Valgus B) Varus C) Pronation D) Supination

B) Varus

A patient presents with the inability to fully extend her elbow due to prolonged immobilization secondary to a radial head fracture. All of the following could contribute to this loss of motion EXCEPT: A) shortened anterior capsule B) Triceps contrature C) Shortened brachioradialis D) Shortened Brachialis

B) triceps contracture

Individuals who present with an inflamed and painful elbow joint will often position the elbow (ulnerohumeral) joint in its loosed packed position to help reduce intra-capsular pressure. Which of the following represents that position? A) Full extension B) 20-50 degrees of flexion C) 70 degrees of flexion with 10 degrees of supination D) 120 degrees of flexion, 10 degrees of supination

C) 70 degrees of flexion with 10 degrees of supination

Which of the following combination of joint positions cause passive insufficiency to the long head of the biceps? A) Elbow extension concurrent with supination of the forearm B) Elbow flexion concurrent with pronation of the forearm C) Elbow extension concurrent with shoulder extension D) Elbow extension concurrent with shoulder flexion

C) Elbow extension concurrent with shoulder extension.

Which of the following statements about pronation/supination is FALSE? A) the arthrokinematics at the proximal radioulnar joint can be described as spin. B) pronation and supination both exhibit 0-90 degrees of AROM C) at the distal radioulnar joint, the ulna is the convex surface. D) both pronators are innervated by the ulna nerve

D) both pronators are innervated by the ulnar nerve