I have radial head removed and ulnar shortening at wrist also had shoulder reconstruction due to weak rhomboid back muscles and shoulder gerdle just wolves around , have average twisting either way at forearm just bear right angle can’t touch shoulder and can’t straighten making so so bad when sleeping every night walking and doing daily task basically a challenge to use at all times . I have been looking into 3D printing joints and stem cell 3D printing. My last surgeon said this is end of road because if we put in a new radial head the end of the humerus hasn’t had weight on it for so many years so it will be soft and spongy and won’t be able to handle the weight so I’m looking at anything to help me really .