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Ancient Greece Plato reasoned that the positioning of cups, bowls, and utensils was of secondary concern.
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The main limitations are set by the speed of the cup-belt and the number and positioning of the cups.
Positioning of the cup differed significantly when a posterolateral approach was applied: 17.7° anteversion and 50.7° abduction (both P < 0.001).
However, some patients manage longer periods with moderate symptoms with a loose cup, until the position of the cup finally changes.
The horizontal (x-) and vertical (y-) distance from this intersection point and the most inferior point of the rim of the cup gives the position of the cup in relation to the teardrop.
Several factors that affect polyethylene wear have been reported, such as the size of the femoral head; the thickness of the polyethylene liner [ 13]; patient age [ 14], BMI [ 15], and postoperative activities of daily living [ 13, 14]; position of the cup [ 16]; and cup inclination and offset [ 17].
Position of the cup in relation to the anatomic hip rotation centre, cup inclination (opening) angle, and size of the stem in relation to the diameter of the femur were studied too.
You may also want a cup changer that will allow you to change the position of your cup.
Since achieving an anatomic center of hip rotation is desirable in order to obtain good results in acetabular revision surgery, we assessed the clinical and radiological results of two different types of oblong cup with regard to the preoperative bone loss and postoperative radiological position of the cup after surgery.
Although the position of the cup is important for the prognosis and function of the hip, most surgeons place the cup without any specific guidance devices.
This may be one of the reasons that some of the variables assessed, such as intraoperative bone defect and some of the data regarding the postoperative position of the cup, did not influence the results.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com