Operation Walk is a great organization that helps improve the lives of many that don't have access to medical care or insurance. Operation Walk recently performed surgeries on seven needy people in Los Angeles. Here is more about them from the Operation Walk website:
"Operation Walk is a private, not-for-profit, volunteer medical services organization which provides free surgical treatment for patients in developing countries (and occasionally in the US), that have no access to life-improving care for arthritis or other debilitating bone and joint conditions."
"Operation Walk also educates in-country orthopedic surgeons, nurses, physical therapists and other healthcare professionals on the most advanced treatments and surgical techniques for diseases of the hip and knee joints. This is done in conjunction with surgeries to help create a lasting contribution to patient care in developing countries."