Figure 6: Correlation of the coupling angle and hearing outcome. Correlations between the coupling angle a (a) and the inclination angle ß (b) (measured in °) and the postoperative air-bone gap (ABG) improvement. The figure displays all prostheses examined in the study, 52 PORP and 55 TORP. (TORP: total ossicular replacement prosthesis; PORP: partial ossicular replacement prosthesis) (courtesy of Zaoui et al., 2014 [95]).