A sprained thumb is an injury to a ligament, which is a soft tissue that connects bones to each other at the joints to keep it stable, as opposed to a thumb fracture (break) which is an injury to the bone. The ulnar collateral ligament is the most injured ligament in the thumb. This particular ligament connects the thumb to the hand on the side closest to your index finger.
Elbow pain can happen for various reasons, including when lifting objects. For example, repeatedly lifting heavy objects can cause repetitive strain injury.
The Arthritis Foundation estimates that about half of all women and a quarter of men will experience hand pain because of osteoarthritis — when the protective cartilage between bones wears down — by age 85. But there are ways to ease the ache.