Lag screw operative technique
This is a procedure that you should be able to talk through and perform this skill during the ST3 Ortho interview process. It is possible that this could for a part of the technical skills station. However you are likely to need to do more than just a lag screw during the technical skills assessment. When practicing these skills just think what could be on the marks sheet. You will receive marks for telling the assesses what you are doing and the rationale behind it.
Read everything you need to know, and everything you need to do here