Question

During the bottom of a squat or hack squat are the quads in a mechanical disadvantage? I understand the patella can create the greater internal moment arm for the quads but is it possible thag if the knees go into too much flexion could that start to decrease the internal moment arm disadvantaging the quads like in a very bottom of a hack squat?

Answer 1

Quadriceps can be at a mechanical disadvantage during a deep squat due to decreased internal moment arm from excessive knee flexion. Proper muscle balance and strengthening of the quadriceps are crucial to maintaining patella tracking and preventing injury.

Step-by-step explanation:

During the bottom of a squat or hack squat, the quads can indeed be put into a mechanical disadvantage if the knees go into too much flexion. Excessive knee flexion during a deep squat can decrease the internal moment arm that the quadriceps muscle group leverages to extend the knee, thus reducing their efficiency in producing force. Moreover, proper balance between the medial and lateral sides of the quadriceps femoris muscle is essential to prevent abnormal tracking of the patella, which could lead to pain and potential joint damage. Treatment typically involves rest and a gradual return to activity, with a focus on strengthening the quadriceps to prevent future issues. It's also worth noting that the Q-angle, which is greater in females, can affect the lateral pull on the patella, influencing knee dynamics and potential susceptibility to patellofemoral syndrome.