Second step - reflex reaction to acceleration feedback. First step, velocity crosses a stimulus threshold. Think of it as fireworks. Stimulus goes up and an umbrella of activity comes down. It has become a muscle transfer strategy to get certain key muscles to velocities below recruitment level, that is rates that do not reflexly activate other muscles at a distance.
Minimal scar has functional advantages.
It is also much easier to revisit, if need be, at a later time. It will not cross link fast and slow muscles. Muscle tension and range are evaluated as the surgical process is underway. The operated muscle is not at rest, not still. Final tension and range are not a surprise but rather the criteria of when to stop.