What is the normal range for foot inversion?

What is the normal range for foot inversion?

• A. 0-60°
• B. 0-15°
• C. 0-50°
• D. 0-30°

Answer: (D)

Inversion is the inward turning of the sole, mainly at the subtalar joint. From a neutral ankle position, the normal range reaches roughly up to 30 degrees inward. This amount of motion allows the foot to adapt to uneven surfaces and supports stable gait without stressing the ligaments. Among typical options, 0–30 degrees best matches this standard range. Values much smaller (0–15) would limit normal function, while values much larger (0–50 or 0–60) exceed typical physiological limits and could indicate laxity or measurement differences.

Inversion is the inward turning of the sole, mainly at the subtalar joint. From a neutral ankle position, the normal range reaches roughly up to 30 degrees inward. This amount of motion allows the foot to adapt to uneven surfaces and supports stable gait without stressing the ligaments.

Among typical options, 0–30 degrees best matches this standard range. Values much smaller (0–15) would limit normal function, while values much larger (0–50 or 0–60) exceed typical physiological limits and could indicate laxity or measurement differences.