Question

multiple choice question

what causes a sprained ligament or tendon?

overstretching
infection
tearing
fibrosis

Explanation:

Define the structures and their functions

Using the Tendon Function and Ligament Function knowledge points, we recognize that ligaments connect bone to bone, while tendons connect muscle to bone. Both are dense regular connective tissues designed to resist tensile forces.

Analyze the mechanism of a sprain

A sprain is a stretch and/or tear of a ligament or tendon. This occurs when a joint is forced beyond its normal range of motion, causing the collagen fibers within these structures to tear.

Evaluate the given options

• Overstretching: While overstretching can precede a tear, the physical damage that defines a sprain or strain injury is the actual tearing of the fibers.
• Infection: This is a biological invasion by pathogens, not a mechanical cause of a sprain.
• Tearing: This is the direct mechanical cause and defining characteristic of a sprained ligament or tendon.
• Fibrosis: This is the formation of excess fibrous connective tissue during healing, not the cause of the injury.

Answer:

• Overstretching
• Infection
• Tearing (Correct answer)
• Fibrosis