Spheno-occipital synchondrosis
 Sphenoid — SOS is the cartilage joint to the occipital
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| Field | Anatomy |
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| Also known as | SOS, spheno-occipital suture (misnomer)
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The spheno-occipital synchondrosis (SOS) is a cartilage growth joint between sphenoid and occipital bone in the skull base. It helps lengthen the cranial base and, secondarily, the midface in childhood.[1] Looksmaxxing folklore treats SOS closure as “maxilla locked, it’s over.” Closure is gradual through adolescence; it is not a femur growth plate, and you cannot palpate it in a mirror.
Not a DIY. Not a reason to take growth hormone. See cranial suture and maxilla.
See also
References
- ↑ Pediatric neurosurgery literature on SOS and midfacial growth; the joint is a real growth cartilage, not a forum invention.
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