Table 5.

Comparison of current results to those in the recent literature evaluating acetabular component position and dislocation

Authors	Year	# patients with dislocation	# patients in series	Factors affecting dislocation	Safe zone
Lewinnek et al.	1978	9	300	Surgical approach and acetabular cup orientation	Inclination 40° ± 10° Anteverison 15° ± 10°
McCollum et al.	1990	5	441	Acetabular cup orientation	Inclination 40° ± 10° Anteverison 30° ± 10°
Paterno et al.	1997	17	391	Age, excessive alcohol intake	Did not find a difference in inclination
Jolles et al.	2002	21	2,023	Acetabular cup orientation, surgeon volume, patient motor skills and ASA score	Anteversion between 40° and 60°
Robinson et al.	2012	9	668	THA position (acetabular and femoral offset)	Inclination 40° ± 10°
Esposito et al.	2014	147	7,040	Age and activity score	Did not find a safe zone