How about "Due to injuries sustained in a motor vehicle accident I was absent from 24th November to 27th March and will be an NQT until February half term. However, I am now fully recovered and excited to be returning to work to continue in my passion for teaching. "

Does that sound ok? Obviously it would continue on with all the look at what I can do stuff.

I am not dwelling on my injury but more don't want to be accused of holding back information I am supposed to disclose and am unsure of where that line is. Thanks for the ideas! I'd rather not put it in there at all to be honest.