Not all serious injuries show up on X-rays, and a follow-up with a specialist, including testing such as an MRI might indeed show a serious injury.
Personal Injury Attorneys call this type of scenario "delayed injuries." It happens all the time. Right after the shock of an accident, and the police come to the scene and you tell them you're fine, but then you go home and realize that everything is hurting. Of course, it is always better for an injury lawsuit if you notice your injuries right away, but it's not too late to seek medical treatment for "delayed injuries" at any time after the accident when you realize you were hurt.
Yes, inmates are entitled to rights while in prison which can be asserted as claims for compensation. A New York inmate abuse and neglect attorney can be hired to represent you. If you have been a victim of abuse by prison staff or other prisoners, it's worth investigating whether you have a claim. If you have been denied proper medical care, disability accommodation, mental health treatment, you may have a compensatable claim. You assert these rights, you will need the help of a New York inmate abuse and neglect attorney.
If you suspect that your sports injury may have been caused by negligence or recklessness, a free consultation with a sports injuries lawyer will help you sort this out. At Sports Injuries Lawyer, Wittenstein & Wittenstein, we've been helping injured people for more than 60 years. Please don't hesitate to call if you think you might have a claim.