During initial swing, the knee reaches approximately what amount of flexion by the end of the phase?

During initial swing, the knee reaches approximately what amount of flexion by the end of the phase?

• A. 60°
• B. 15°
• C. 5°
• D. 30°

Answer: (A)

During the initial swing, the knee flexes rapidly from near extension at toe-off to a peak around mid-swing. By the end of the initial swing, the knee typically reaches about 60 degrees of flexion. This amount of bend helps lift the foot and clear the ground as the leg swings forward. Smaller angles, like 15° or 5°, are more characteristic of stance phases or very early swing, and 30° is not the usual end-of-initial-swing value.

During the initial swing, the knee flexes rapidly from near extension at toe-off to a peak around mid-swing. By the end of the initial swing, the knee typically reaches about 60 degrees of flexion. This amount of bend helps lift the foot and clear the ground as the leg swings forward. Smaller angles, like 15° or 5°, are more characteristic of stance phases or very early swing, and 30° is not the usual end-of-initial-swing value.