Conversation so far:
Is there any interesting information about Raymond Berry?
Raymond Berry overcame several physical ailments during his football career
What were some of Raymond Berry's ailments?
Bruised nerves near the sacroiliac joint occasionally caused misalignment in Raymond Berry's back, which in turn affected his legs.

Question: How did it affect his legs?
Self-contained rewrite: How did the misalignment in Raymond Berry's back affect his legs?