This document summarizes some common birth defects of the musculoskeletal system, including the spine, upper limbs, and lower limbs. It describes spinal conditions like scoliosis (curvature of the spine), Scheuermann's disease, and Klippel-Feil syndrome. Common upper limb defects mentioned are missing limbs, clubfoot, brachial plexus injuries, forearm defects, and hand/finger abnormalities. Lower limb defects are also briefly touched on. Treatment methods for some conditions like the Ponseti Method for clubfoot are mentioned.