Oh indeed the anterior has much less dislocation factor! Since way back when, (before hip replacements - yes I am old enough to have experience of then! LOL) hemi-arthroplasties carried out for #NOF were most often done via a posterior incision and dislocation rate always seemed to be a common occurence.

Your apocryphal tale of surgeons testing the hip before the patient is transfered off the table is quite true. It's generally a routine part of the procedure as is checking the leg length by approximating the medial malleoli. Not the most accurate, granted, but they do it anyway.