Terminal swing quadriceps activity prepares for which gait event?

Terminal swing quadriceps activity prepares for which gait event?

• A. Toe off
• B. Push-off
• C. Heel contact
• D. Midstance

Answer: (C)

In terminal swing, the leg is being readied for the first contact of the stance phase. The quadriceps fire to extend the knee so that at the moment the foot touches the ground, the knee is near full extension. This sets up a stable knee for weight acceptance and proper alignment as the body moves onto that limb. If the knee isn’t extended adequately at contact, the limb would land with a more flexed knee, making weight bearing less stable and demanding more muscular work to control the knee right after contact. That’s why this quadriceps activity specifically prepares for heel contact. Toe off and midstance occur later in the gait cycle and involve other muscles and functions (pushing off with plantarflexors, and the body passing over the foot, respectively), so they aren’t the events this terminal-swing activity is preparing for. Heel contact is the correct match.

In terminal swing, the leg is being readied for the first contact of the stance phase. The quadriceps fire to extend the knee so that at the moment the foot touches the ground, the knee is near full extension. This sets up a stable knee for weight acceptance and proper alignment as the body moves onto that limb. If the knee isn’t extended adequately at contact, the limb would land with a more flexed knee, making weight bearing less stable and demanding more muscular work to control the knee right after contact. That’s why this quadriceps activity specifically prepares for heel contact.

Toe off and midstance occur later in the gait cycle and involve other muscles and functions (pushing off with plantarflexors, and the body passing over the foot, respectively), so they aren’t the events this terminal-swing activity is preparing for. Heel contact is the correct match.