Fig. 5

a Midsagittal plane of the condyle. (Ei: inferior point of the articular eminence; Fs: superior point of the glenoid fossa; Fp: intersection of the posterior slope of the glenoid fossa and a line parallel to the FH plane and passing through the Ei. When the posterior slope was shorter than the anterior slope, the inferior point was used. ∠1 Aei: articular eminence inclination, the angle between the best fit line of the posterior slope of the articular eminence and the horizontal plane. 1: Glenoid fossa depth; 2: Glenoid fossa width. A: Anterior joint space: shortest distance from the most prominent anterior point of the condyle to the corresponding glenoid fossa bone. S: Superior joint space: shortest distance from the most superior point of the condyle to the Fs. P: Posterior joint space: shortest distance from the most prominent posterior point of the condyle to the corresponding glenoid fossa bone.) b Midcoronal plane of the condyle (Mes: the medial joint space, the shortest distance from the midpoint between the most medial and superior points of the condyle to the corresponding glenoid fossa bone. Las: lateral joint space, the shortest distance from the midpoint of the most lateral and superior points of the condyle to the corresponding glenoid fossa bone