Table 2 Jump distance of Quattro cup, Groupe Lépine
From: Modular dual mobility articulation in primary and revision hip arthroplasty: lights and shadows
|  | Quattro 54–48 |
|---|---|
Data | |
Alfa | 45.00° |
Beta | 15.00° |
Offset | 1.45 |
R | 24Â mm |
Intermediate | |
tan(α) | 1 |
cos(β) | 0.97 |
tan(Ψ) = tan(α) * cos(β) | 0.97 |
Ψ = arctan(Ψ) | 44.01° |
ϴ = arcsin (offset/R) | 1.73° |
Results | |
JD = 2R sin((π/2 − Ψ − ϴ)/2) | 17.4 mm |