In hand dynamometry interpretation, a difference greater than 10-15% between hands suggests what?

In hand dynamometry interpretation, a difference greater than 10-15% between hands suggests what?

• A. Unilateral impairment
• B. Bilateral impairment
• C. Normal variation
• D. Measurement error

Answer: (A)

A notable asymmetry between hands in grip strength points to impairment on the weaker side. When one hand is significantly weaker than the other, it suggests unilateral (one-sided) impairment rather than a system-wide or bilateral issue. In practice, a difference exceeding about 10–15% is considered clinically meaningful because normal variation from dominance, technique, or everyday use usually produces smaller gaps. If both hands were equally weak, that would hint at bilateral impairment rather than a unilateral problem. If the discrepancy were due only to measurement error, you’d expect inconsistent results across trials rather than a consistent, sizable difference. So a difference greater than 10–15% between hands most strongly indicates unilateral impairment in the weaker hand.

A notable asymmetry between hands in grip strength points to impairment on the weaker side. When one hand is significantly weaker than the other, it suggests unilateral (one-sided) impairment rather than a system-wide or bilateral issue. In practice, a difference exceeding about 10–15% is considered clinically meaningful because normal variation from dominance, technique, or everyday use usually produces smaller gaps. If both hands were equally weak, that would hint at bilateral impairment rather than a unilateral problem. If the discrepancy were due only to measurement error, you’d expect inconsistent results across trials rather than a consistent, sizable difference. So a difference greater than 10–15% between hands most strongly indicates unilateral impairment in the weaker hand.