Film writing is different. Cause they actually have a separate profession, Martial Art Director/ Chronographer position.
So, the screen write just have to write -fight going on-, then the chronographer would arrange accordingly to what is provided by the screen writer. If the wound at the shoulder is significant, screen writer would just mention the important point of the fight scene.

Let me add one bit. Objective is quite important. What is the fight scene for? The cause of it? and the outcome of it? It can be one or many others. And in the event there are a lot of objectives, tier it according to importance, so you won't lose focus.
Have to figure out what you want to gain from that fight. eg. get the main character hurt? Show off character's secret skill?
Basically, justify how important that fight scene is, and adjust the length of the fight accordingly.
As, writing a fight scene and fight scene in film is very different. Fight scenes would ALWAYS look awesome on film, but not so in words.

Writer forum had been quite quiet lately, so excuse my long winded self absorbing blabber.