Hi

PUF = Pick Up Frame
NWB = Non Weight Bearing
FWB = Full Weight Bearing

My apologies

As for a normal gait pattern - it is simple - walking is heel strike, hip extension through to toe off then swing phase back to heel strike.

I am not sure where to find a textbook on that. Google might have something. It is basic undergrad level stuff so an undergrad textbook or a sports med textbook might have it. It applies to orthopaedics, neuro, musculoskeletal, paediatrics so i am sure you will find it somewhere...

Thanks