I had this experience 25 years ago - against a huge amount of odds my DC came home after 18 months in foster care.
We still don't know for sure what caused my DCs "fractures" because they were metaphyseal - irregularities in the growth plates at the end of the long bones. Depending on the "expert" consulted, there were either 21, 15 or 12. Only two ever showed a symptom, which I obviously took for professional appraisal. They don't show as healed fractures on childhood X-rays and rarely are discovered unless a child is X-rayed for another reason (or, as in my case, there was a swelling).
My DC was 5 weeks early, and I had pre-eclampsia. He was in hospital for a week after his birth, and at home for five weeks before he was removed from our care. As I knew that nobody had been violently swinging him by his limbs, nor pulling, twisting and shaking at the site of each fracture with enough force to damage bone but leave no external marks, I found out very early on that only a confession would appease the authorities.
My DC had been exclusively BF up until he went into FC. He packed on weight as soon as he was given formula. At that time birth parents were not allowed to express nor breast feed in my area - and the FC placement was an hour away from me. Initially I had "generous" contact of 2 hours per day at the FC home, plus a day at the Family Centre, where I had to prove that I could complete basic tasks. Which I did. Over and over. Whether he had a deficiency was never really addressed - nor was the quality of my milk examined. He was however put on vitamins straight away that the fractures were discovered. he was also treated for anaemia although it wasn't iron defiency anaemia, it was related to copper deficiency, but by the time the blood expert saw his test results, months had passed and he was now normal. On the balance of probabilities this expert had to concur that the other experts in the case were right and it was more likely to be child abuse than anything else.
I was analysed three times by different psychologists and psychiatrists, one of whom thought I might have Borderline personality disorder because I was very upset that the likely outcome of our case was adoption for my DC. Oh, and I had to humble myself and not question experts.
I spent hours on the phone - this was before general internet, discovering that metaphyseal fractures are a bit of a dogma in the CP world, and haven't been properly re- evaluated for over 50 years in terms of cause in neonates - the Websters fell foul of this, and journalist James le Fanu has written a fair bit about it too.
It's a catch 22 situation. Doctors "diagnose" child abuse and the SWs try to figure out why you've done it and they both just pass things back and forth like a hot potato.
I was lied to by doctors - a paediatrician said that it couldn't be brittle bones because his calcium blood levels were normal. Which overlooks that classic brittle bones, or Osteogenesis Imperfecta is a collagen disorder. I have selective hypermobility. Irrelevant apparently.
Oh, and 5 weeks early "isn't really premature"; conversely, he was at higher risk of abuse ..... because he had been born prematurely.
Happy to answer any questions, it sounds unbelievable but I lived it and I still have very clear memories of the whole thing. No, it wasn't the father either. Or any family member.
Children MUST be protected from abuse, no doubt. But there are just a few holes in the system that need addressing - children should not be forcibly adopted if there is doubt over medical issues - and yes, I know FII (MSBP as it was called) is a real risk, but if a case doesn't add up, hammering at the parents until they doubt their own sanity is neither moral, ethical nor in the best interests of the child.