The equation for the torque is the same as for the pulley. E.g., the puylling force of the quadriceps muscle acts as a pulley around the rotula, so can I calculate as a torque movement, knowing that the T = Nm

(f x r).
Thank you

Torque is force multiplied by the "lever arm" distance of the point of application from an axis of rotation.

Torque is not 'movement', as you have written. Perhaps you meant 'moment'.

Yes, you can calculate the torque (T) in a pulley system, including the one involving the quadriceps muscle and the patella (kneecap). The formula for torque is T = (force) x (distance), where force is measured in newtons (N) and distance is measured in meters (m).

In this case, the force is the pulling force exerted by the quadriceps muscle, and the distance is the distance between the point of rotation (the axis of rotation of the knee joint) and the point where the force is applied.

To calculate the torque in this scenario, you would multiply the magnitude of the force exerted by the quadriceps muscle by the distance between the axis of rotation and the point where the force is applied. The resulting torque would be measured in newton-meters (Nm).

It is important to note that the torque calculation assumes that the force and distance are perpendicular to each other. Also, remember to keep in mind the positive and negative directions of torque, which depend on the direction of rotation.

So, to calculate the torque (T) movement, use the formula:
T = force x distance (T = Nm)

Make sure to convert any forces and distances to the appropriate units (e.g., force from pounds to newtons, distance from inches to meters) before performing the calculation.