A hip flexion contracture can decrease walking velocity by what percentage?

• A. 60%
• B. 20%
• C. 35%
• D. 10%

Answer: (A)

A hip flexion contracture dramatically limits hip extension during stance, which shortens step length and reduces forward progression. In people with myelomeningocele, this loss of hip extension and propulsion translates into a substantial drop in walking speed. Gait analyses and clinical observations consistently show that this contracture can decrease walking velocity by about 60%, reflecting a large impact on how quickly a person can move.

The other percentages would underestimate the real effect. A mild decrease like 10% or 20%, or even mid-range 35%, doesn’t match how much step length and momentum are compromised when the hip cannot extend adequately, especially in individuals who rely on hip mechanics for propulsion.