A Blow to the Shoulder Often Breaks the Clavicle,but Very

question 69

Multiple Choice

A blow to the shoulder often breaks the clavicle,but very seldom breaks the scapula.Suggest why.

• A)The scapula is larger than the clavicle.
• B)The clavicle provides the only bony attachment of the pectoral girdle to the body.
• C)The scapula is more protected by muscle.
• D)When the body is moving forward,the clavicle is more likely to be struck than the scapula.
• E)All of these are valid explanations.

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Definitions:

Piriformis

A muscle in the gluteal region of the lower limb, involved in the rotation of the thigh and known for its relation to the sciatic nerve.

Inversion

A movement that tilts the sole of the foot towards the midline of the body, opposite to eversion.

Tibialis Anterior

A muscle in the anterior compartment of the leg responsible for dorsiflexion and inversion of the foot.

Fibularis Longus

A muscle of the lower leg that helps in the flexion and supination of the foot.