What physical risk factor refers to repeated or continuous contact with hard or sharp objects that may create pressure over an area of the body that can inhibit blood flow and nerve function?

What physical risk factor refers to repeated or continuous contact with hard or sharp objects that may create pressure over an area of the body that can inhibit blood flow and nerve function?

• A. Vibration
• B. Frequency
• C. Contact Stresses
• D. Posture

Answer: (C)

The idea being tested is how localized, external pressure from contact with hard or sharp surfaces can impair tissue viability. When a body part, like a hand or forearm, presses repeatedly or continuously against a hard edge or tool, the small blood vessels in that area get squeezed. That reduces blood flow (ischemia) and also compresses nerves, which can lead to numbness, tingling, weakness, or even longer-term nerve or tissue damage with repeated exposure. Examples help ground this concept: resting the palm on the sharp edge of a workbench while using a tool, gripping a tool handle with an abrasive or pointed edge pressing into the skin, or leaning an elbow or knee against a hard surface for long periods. These are classic contact stress scenarios because the risk arises from the direct, localized pressure on soft tissue, not from vibration, how often something occurs, or overall body posture. So this option best fits the description because it directly describes repetitive or sustained pressure from contact with hard or sharp objects that can compromise blood flow and nerve function.

The idea being tested is how localized, external pressure from contact with hard or sharp surfaces can impair tissue viability. When a body part, like a hand or forearm, presses repeatedly or continuously against a hard edge or tool, the small blood vessels in that area get squeezed. That reduces blood flow (ischemia) and also compresses nerves, which can lead to numbness, tingling, weakness, or even longer-term nerve or tissue damage with repeated exposure.

Examples help ground this concept: resting the palm on the sharp edge of a workbench while using a tool, gripping a tool handle with an abrasive or pointed edge pressing into the skin, or leaning an elbow or knee against a hard surface for long periods. These are classic contact stress scenarios because the risk arises from the direct, localized pressure on soft tissue, not from vibration, how often something occurs, or overall body posture.

So this option best fits the description because it directly describes repetitive or sustained pressure from contact with hard or sharp objects that can compromise blood flow and nerve function.