Some, noting volcanic outflows antipodal to impact areas, have speculated on the effects of large impacts on the Earth's lithosphere. As the amount of energy released in these impacts has been insufficient to directly cause the flows, speculation has focused on that energy triggering the rupture of existing faults -

In the case of Mars, there is no Moon sized body near-by, thus no gravitational effects to keep the core molten and to provide energy for tectonic movements. Despite this, some antipodal effect still seems to be working in the case of Hellas.

To my knowledge, current models have not taken into account rotational effects. After an impact, a planet must become an imperfectly balanced body rotating at high speed. This has to generate some forces, even in a relatively brittle material such as the cooled lithosphere of Mars.

EP