Conversation so far:
What was Lionel Barrymore's main medical issue?
Several sources argue that arthritis alone confined Lionel Barrymore to a wheelchair.
How did Lionel Barrymore's arthritis affect him?
Lionel Barrymore was addicted to morphine due to arthritis by 1929.
Was Lionel Barrymore's arthritis always severe?
When Lionel Barrymore won his Best Actor Oscar award in 1930, the arthritis was still so minor that it only made him limp a little.

Question: Was he cripped by the pain or limited movement?
Self-contained rewrite: Was Lionel Barrymore cripped by the pain or limited movement caused by his arthritis?