Have you any references please? That's not information that I've come across before.
Thanks again for taking the time to pass on such a large volume of information.
Sure, here's a recent paper about the topic of the Neanderthal limited range of motion due to shoulder anatomy:
http://www.physorg.com/news151326825.html
This idea has been around for a while and it's not settled science, although at this point most accept it.
It has been sometimes said that it means Neanderthals couldn't throw at all. That's not true: they could throw sidearm. And because they were more robust than us, that would still be a devastating strike -- but not nearly as accurate as an overhead throw.
The Neanderthal method of hunting continues to be hotly debated.
The large number of broken bones found in Neanderthal remains suggest to many that they confronted game in close quarters with thrusting spears. This is a popular view, but not by any means universally accepted.
On thing the shoulder anatomy does suggest: the Neanderthal was unlikely to be able to use the atlatl as effectively as sapiens (or at all). That would have made all the difference in the world. The atlatl conferred an incredible competitive advantage to whomever used it -- it was the nuclear weapon of the time...
We don't know reliably when the atlatl arrived, but some believe it showed up about 10,000 years before Neanderthal vanished. The oldest example yet found is 33,000 years old.
All that said, it's been an incredibly exciting time in our Neanderthal understanding -- they were
significantly more sophisticated than once believed. Just last week in Spain a dig uncovered signs they were cooking both meat and plant material 50,000 years ago AND they build a semicircular stone wall inside the cave that long ago too.
You gotta love Neanderthals....