Joey Warren’s Posture

Joey has a hard time lowering to a seated position.

When a napping or lounging Joey needs to change position, he pivots with his rear end rather than getting up on all fours. His hind legs are barely used.

The pivoting reminds me of animals dragging their paralysed rear end.

Could it be Polymyalgia rheumatica (PMR); chronic abdominal inflammation or maybe Arthritis (despite the injections)?