What is the normal range for ankle plantarflexion?

• A. 25 degrees
• B. 50 degrees
• C. 75 degrees
• D. 90 degrees

Answer: (B)

The normal range for ankle plantarflexion is indeed around 50 degrees. This movement occurs primarily at the ankle joint, allowing the foot to point downward away from the leg. A plantarflexion range of about 50 degrees is essential for activities such as walking, running, and jumping, as it enables an adequate push-off from the ground.

Understanding the normal range is crucial for assessing ankle mobility and function. If the range of plantarflexion is significantly reduced, it may indicate underlying conditions such as stiffness, injury, or neuromuscular disorders that could impact mobility and balance.

Other ranges provided in the options are not typical for normal ankle plantarflexion. For instance, a range of 25 degrees would be indicative of restriction or limited mobility, while 75 degrees and 90 degrees are well beyond what is achievable in normal physiological movement of the ankle joint.