So I have a humanoidish race of creatures that don't have clavicles and gives them more mobility of their arms/ hyper mobility. While ik about the Cleidocranial dysostosis, the birth defect or mutation that means the person is born with partially formed or no collar bones as well as other bone development issues like with the cranium and also with teeth.
However, that occurs in creatures that are designed on average to have collar bones, what about a race that just naturally didn't have them?
What would that affect? Would it make any sort of sense in a body that fairly resembles the human skeletal structure? If not what would without having to change their bipedal stance?