Mobility impairment deficits can include flexibility deficits in which structures?

Mobility impairment deficits can include flexibility deficits in which structures?

• A. Hamstrings
• B. Quadriceps
• C. Gastrocnemius
• D. All of the above

Answer: (D)

Mobility impairment deficits reflect limitations in movement caused by tightness or altered length of muscles crossing the joints involved. The hamstrings cross the hip and knee, so when they’re tight they limit knee extension and hip flexion range, reducing overall lower-limb mobility. The quadriceps cross both the hip and knee as well, and tightness here tends to limit knee flexion and the ease of bending the knee, affecting how the leg moves through space. The gastrocnemius crosses the knee and ankle, so tightness can restrict ankle dorsiflexion and, because ankle motion interacts with knee mechanics, further limits overall leg mobility. Since any of these structures can contribute to limited motion, deficits in flexibility can be present in all of them, making all of the above correct.

Mobility impairment deficits reflect limitations in movement caused by tightness or altered length of muscles crossing the joints involved. The hamstrings cross the hip and knee, so when they’re tight they limit knee extension and hip flexion range, reducing overall lower-limb mobility. The quadriceps cross both the hip and knee as well, and tightness here tends to limit knee flexion and the ease of bending the knee, affecting how the leg moves through space. The gastrocnemius crosses the knee and ankle, so tightness can restrict ankle dorsiflexion and, because ankle motion interacts with knee mechanics, further limits overall leg mobility. Since any of these structures can contribute to limited motion, deficits in flexibility can be present in all of them, making all of the above correct.