Wavy ribs

Twisted ribs

Common: Cervical rib; Congenital rib hypoplasia; Hypotonia; Idiopathic; Intrauterine growth retardation; Myotonic dystrophy; Myotubular myopathy; Neurofibromatosis type 1; Regenerated rib after resection; Severe osteoporosis; Werdnig-Hoffmann disease
Uncommon: 3-M syndrome; Achondrogenesis type 1; Aminopterin fetopathy; Angiomatosis; Antley-Bixler syndrome; Atelosteogenesis type 2; Campomelic dysplasia; Chondrodysplasia punctata; Cloverleaf skull-MCA-dysplasia; Cockayne syndrome; Contractural arachnodactyly; Dappled diaphyseal dysplasia; Diaphanospondylodysostosis; Floppy infant; Fluconazole embryopathy; Goldberg-Shprintzen syndrome; Gorlin syndrome; Gracile bone dysplasia group; Hallermann-Streiff syndrome; Hyperparathyroidism; Larsen syndrome; Meier-Gorlin syndrome; Melnick-Needles osteodysplasty; Metaphyseal chondrodysplasia; Metaphyseal chondrodysplasia Jansen type; Morquio syndrome; Osteocraniostenosis; Osteogenesis imperfecta type 1; Osteogenesis imperfecta type 3; Osteogenesis imperfecta type 4; Osteoporosis; Otopalatodigital syndrome type 2; Paraplegia; Poliomyelitis; Progeria; Rheumatoid arthritis; Scleroderma; Spondylocostal dysostosis; Spondylothoracic dysplasia; Trisomy 13; Trisomy 18; Trisomy 21; Trisomy 8; Turner syndrome; Van den Ende-Gupta syndrome