The definition of birth trauma can be highly subjective. My child was born at 35 weeks, induced due to pre-eclampsia severe enough for the duty doctor to tell me that we both had a 50 / 50 chance of survival. During delivery, which took 4 hours, I was instructed to stop pushing because the cord was round his neck. Having had an epidural that was only partially effective, that felt pretty traumatic.
When, 6 weeks later, I was accused of deliberately causing multiple metaphyseal fractures, only visible on x-ray and only 2 out of a suspected 21 showing any kind if "symptom", for which I took appropriate advice, his birth was completely discounted as in anyway traumatic in favour of deliberate harm.
Plus, although these fractures are notoriously difficult to put an age on by x-ray, they could confidently assert that none of them occurred during our ten day hospital stay. Three experts later, one of whom only looked at x-rays, fracture numbers varied from 21, to 15 to 12, and a compressed veterbrae showing no symptoms had been thrown in, allegedly due to slamming baby on a hard surface (leaving no bruises) or violent bending (force of a car crash) with no other indicators.
So forgive me if I'm cynical about how experts and doctors report events in kegal proceedings.