As per report published in Daily Mail Robert's mother said: ‘Robert has only been out four times in three years - I can't push him out because he is too big and heavy.
Robert has 21 more bones in his hand than he should - and, as a result, suffers a great deal of pain.
‘His knees and elbows are also very large and his skin is so thin that only a tap will make it rip,' his mother explained.