Simplify the following text for a Grade 7 native English-speaking person.
Original: A 2003 study found that regular use of chopsticks by the elderly may slightly increase the risk of osteoarthritis in the hand , a condition in which cartilage is worn out , leading to pain and swelling in the hand joints .
Simplified: It found that people who use chopsticks regularly have a slightly higher risk of getting arthritis in the hand . With this , cartilage gets worn off , which causes pain in the joints of the hand .