There are many contradictions in the literature as to the origin of the omo-cervicalis (aka, atlanto-cervicalis, levator claviculae) muscle in non-human primates. Miller 1932 reports it's on the spinous process but all images (including his) appear to depict its origin on the lateral aspect of the pars interarticularis. Any informed knowledge on this from dissection or otherwise? Not from the usual literature citing Miller (ie., Aiello, Wood).
interesting!
So much to be learnt in terms of cervical pain...
Kind regards, Maria
Dear Colleague,
Thank you for this interesting question. It shows us that there is still a lot to discover and to describe in anatomy, and that comparative anatomy e.g., primatology, can be of great value in this. In the recent past, e.g., with respect to functional anatomy of primates and their predecessors (like the marsupials that we studied), the Journal of Anatomy papers by the late Professor F.G. Parsons (1863-1943) did help us a lot ! I therefore attach this 1898 paper by Prof. Parsons, with his description of the levator claviculae muscle from p. 449 on, plus some sketches. Remarkably, he calls this muscle also "omo-trachelian".
I think that his explanations make sense, be they quite short. Unfortunately, I could not figure out right now, where his second lecture on head & neck anatomy was published.
Anyway, I still hope that this paper will give you some of the wanted information.
Wishing you success, with kind regards,
Koos Jaap van Zwieten
Thanks K.J. very much for the article. According to Parsons this muscle's origin is the transverse process of the atlas, which seems to contradict many recent texts - but 'feels' much better in terms of shoulder kinematics.
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