UPPER EXTREMITY JOINT BIOMECHANICS

Regarding the clavicle, all are correct EXCEPT:

• It is an example of the short bones.

• It is the first bone to ossify in the fetal life.

• ossify in the fetal life.

• It is the commonly fractured bone.

The most common site of fracture of the clavicle is:

• Medial end.

• Lateral end.

• Midpoint of the clavicle.

• Junction of the medial two-thirds and the lateral third.

The inferior surface of the clavicle gives attachment to all of the following

EXCEPT:

• Conoid ligament

• Trapezoid ligament.

• Costoclavicular ligament.

• Pectoralis major muscle.

These muscles are attached to the medial two thirds of the clavicle EXCEPT:

• Sternomastoid

• Deltoid.

• Pectoralis major.

• Subclavius.

Regarding the articulations of the clavicle, one is correct:

• The medial end articulates with the manubrium by fibrous articulation.

• The medial end articulates with the manubrium by cartilaginous articulation.

• The lateral end articulates with the acromion by fibrous articulation.

• The lateral end articulates with the acromion by plane synovial articulation.

One of he following is not attached to the medial border of the scapula:

• Levator scapulae.

• Teres minor.

• Serratus anterior.

• Rhombideus minor.

All of the following parts of the scapula can be felt EXCEPT:

• Acromion process.

• Crest of the spine.

• Upper border.

• Inferior angle

The glenoid cavity articulates with the head of the humerus by a:

• Fibrous articulation.

• Cartilaginous articulation

• Ball and socket synovial articulation.

• Hinge synovial articulation

The back of the medial epicondyle is related to the:

• Radial nerve.

• Axillary nerve.

• Ulnar nerve.

• Median nerve.

Muscle/s taking origin from the clavicle is/are:

• Subclavius.

• Trapezius.

• Pectoralis major.

• Deltoid