Agree - excellent book. ISBN 0-684-84443-5. Arnie Baker's is an M.D. and a serious cyclist. He seems to be one of the few who understand that the marketing mantra of "more float = healthier knees" can be bad advice. Some knee problems are actually caused and/or made worse by excessive pedal float.I haev "bicycling medicine" by Baker; it's a good, easy-to-read guide that includes knee problems along with many others.