1. Inability to walk more than one block or stand longer than 20 to 30 minutes as a result of pain are indications for total hip and knee replacement.
2. Periprosthetic osteolysis attributable to a biologic response to particulate debris is the most common cause of implant loosening.
3. Arthroscopic debridement is most beneficial in patients with osteoarthritis (OA) with mechanical symptoms such as locking.
4. Lumbar spine surgery is most successful in patients with radicular symptoms confirmed by clinical examination, electromyography (EMG), and magnetic resonance imaging (MRI) findings who have failed conservative therapy.