If zero femoral elevation can be achieved for radiography, the lateral distal femoral angle measurements do not vary much with mild femoral rotation (±5°)
The iliac horizontal diameter is the recommended variable and maximum obturator foramen width is an acceptable variable in order to evaluate slight pelvic rotation
The position of a stable stem can appear different on subsequent re-evaluations, but this may be due to variability associated with inconsistency of positioning of the patient and limb
The frequency of complications, primarily related to the increase in body condition score after surgery, was less than 20% and not different across age groups