In this book, which is the second in my series of orthopedic informational guides, I would like to explain frequency, causes, and treatments of knee pain and instability that many of you have experienced or will experience in your lifetimes.In active society there are many sports injuries, activities, and other conditions that affect all of our bodies and especially our joints. As an orthopedic surgeon I have seen thousands of patients of all ages. Most people have no understanding ...