Riedel's line
(Redirected from Riedel line)
 Lateral skull (Commons). Riedel's line is a profile tangent used to talk about chin projection, not a diagnosis.
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| Field | Anatomy |
|---|---|
| Also known as | Riedel line, Riedel's plane
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| Related | Chin; Pogonion; Mandible; Sliding genioplasty |
Riedel's line is a profile tangent that glances the most projecting point of the lips (or, in some statements, the nose) and asks whether the chin reaches it.[1] Looksmaxxing cephalometric talk uses it as a quick “does the chin show up in side view” check. A chin behind the line is called weak; surgery talk then jumps to sliding genioplasty or an implant.
It is a line on a photograph, not a diagnosis. Lighting, lip posture, and body fat move it. See pogonion and chin.
What moves the line
Lighting, lip posture, and body fat move a photographic tangent. Bone moves with a sliding genioplasty or an implant. Menton is the bottom of the chin; pogonion is the front. Forum “Riedel fail” is slang for a chin that does not reach the line.
See also
References
- ↑ Henry Gray. Gray's Anatomy. 20th American ed. Lea & Febiger. 1918. Retrieved 11 September 2026.