gonion


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Related to gonion: pogonion, gnathion

gonion

 [go´ne-on] (pl. go´nia) (Gr.)
the most inferior, posterior, and lateral point on the angle of the mandible. adj., adj go´nial.

go·ni·on

, pl.

go·ni·a

(gō'nē-on, gō'nē-ă), [TA]
The lowest posterior and most outward point of the angle of the mandible. In cephalometrics, it is measured by bisecting the angle formed by the tangents to the lower and the posterior borders of the mandible; when the angles of both sides of the mandible appear on the lateral radiograph, a point midway between the right and left side is used.
[G. gōnia, an angle]

gonion

(gō′nē-ŏn′)
n.
The outer point on either side of the lower jaw at which the jawbone angles upward.

go·ni·on

, pl. gonia (gō'nē-on, -ă) [TA]
The lowest posterior and most outward point of the angle of the mandible. In cephalometrics, it is measured by bisecting the angle formed by the tangents to the lower and the posterior borders of the mandible; when the angles of both sides of the mandible appear on the lateral radiograph, a point midway between the right and left side is used.
[G. gōnia, an angle]

go·ni·on

, pl. gonia (gō'nē-on, -ă) [TA]
Lowest posterior and most outward point of angle of mandible. In cephalometrics, it is measured by bisecting angle formed by tangents to lower and posterior borders of mandible; when angles of both sides of mandible appear on the lateral radiograph, a point midway between right and left sides is used.
[G. gōnia, an angle]
References in periodicals archive ?
Mean and Frequency of Condyion Gonion Displacement Index (CGDI) Parameter (N) Mean [+ or -] SD No.
Abbreviations: 3-D = three dimensional, 6-DOF = six degrees of freedom, CAD = computer-aided design, CAS = computer-assisted surgical, CT = computed tomography, CW = coronoid width, GW = gonion width, LCW = lateral condyle width, MAL = mandibular angle left, MAR = mandibular angle right, MLL = mandibular length left, MLR = mandibular length right, OEF = Operation Enduring Freedom, OIF = Operation Iraqi Freedom, SD = standard deviation.
In another study, Sandler reported that joint and gonion are the points with the most reproducibility by manual tracing.
Next, position the central ray perpendicular to the IR, entering midway between the mentum and gonion on the contralateral side.
The facial points pogonion (Pg), labial commissure (Co), gonion (Go), outer eye corner (C), and tragus (T) were marked with indelible ink; measurements of swelling were performed with a millimetric ruler from the facial planes (T-Co, T-Po, C-Go, and Go-Co).
In accordance with the anatomical and morphological characteristics of the mandible, two anatomical reference points are defined on the X-ray image in GIMP software: menton (ME) and gonion (GO) [8].
(b) Lateral cephalometric radiographs skeletal reference points: Nasion (N), sella (S), orbitale (Or), porion (Po), condylon(Co), anterior nasal spine (ANS), posterior nasal spine (PNS), point (A), point (B), gnathion (Gn), menton (Me), and gonion (Go).
Na cabeca, as bossas frontais, as arcadas supraciliares, os ossos proprios do nariz, os malares ou zigomatico, o maxilar inferior, o gonion e o mento.
Caption: FIGURE 1: Points and plains used in cephalometric analysis: Gl; (soft-tissue glabella), Prn (pronasale), Cm (columella), Sn (subnasale), Ls (labrale superius), Li (labrale inferius), Pg; (soft-tissue pogonion), Pg (osseous pogonion), Gn (gnathion), Me (menton), Go (gonion), Ba (basion), Co (condylion), Po (porion), Pt (pterygoid point), S (sella), PNS (posterior nasal spine), ANS (anterior nasal spine), N (nasion), Or (orbitale), Ap + 1 (apicale superius), Ap - 1 (apicale inferius), In + 1 (incisale superius), In - 1 (incisale inferius), NSL (nasion-sella line), FA (facial axis), NL (nasal line), MP (mandibular plane), FH (Frankfort horizontal), E (Ricketts' Esthetic line), and S (Steiner's line).
In the study done by Naeem et al, (5) it was thought that by using a protractor to accurately determine the direction of the line perpendicular to the line joining the 'menton' and 'gonion', more consistent results could be obtained.
For the video data from the camera recording perpendicularly to the net, the locations of 21 body landmarks (vertex, gonion, suprasternale, right and left shoulders, elbows, wrists, third knuckles, hips, knees, ankles, heels, and toes) were manually digitized, and their horizontal (X) and vertical (Y) locations were expressed in standard units with respect to a planar origin at the midpoint of the centerline and on the ground.