Chapter I: Conditions of the Spine.

Chapter 1 of the book "Spine: Rehabilitation Medicine Quick Reference" is presented. It discusses the different conditions of the spine. Achondroplasia is the described as the most common form of dwarfism and occurs in one in 10,000 to 30,000 live births. Differential diagnosis for aging lumbosacral spine include fracture, infection and neoplasm, among others. Other conditions discussed include aneurysmal bone cysts, arteriovenous malformation and atlantoaxial instability.