He quickly went from He-man to Ram-Man after all those procedures ( 13 surgeries in total.)
His spine is now one solid bone stick with absolutely zero mobility. All segments are entirely fused and held together by 14 screws, 2 cages and 2 rods.
All that hardware is pinching on his nerves and causing all the back pain + numbness in his legs.
He was supposed to have them removed at some point, which may or may not alleviate some of his suffering.
Maybe one day.