I always wondered this and I guess it just like the Hulk pants question. Wolverine’s bones are coated with adamantium, but what about his cartillage? Are Wolverine’s ears hard like metal or flexible like everyone else’s? For practical purposes, he needs his cartillage to be normal because if it were adamantium then he wouldn’t be able to bend his joints.
But if his joints ARE normal cartillage then he can be dislocated and separated at the joints. He wouldn’t be able to heal from that(his arms and legs being not actually connected to his body). Too much time on my hands.