Exostosis

An exostosis, also known as bone spur, is the formation of new bone on the surface of a bone. Exostoses can cause chronic pain ranging from mild to debilitatingly severe, depending on the shape, size, and location of the lesion. [Source: Wikipedia ]

Subtypes
Bizarre parosteal osteochondromatous proliferation
Dysplasia epiphysealis hemimelica
Florid reactive periostitis
Subungual exostosis
Traction exostosis
Turret exostosis
May Cause
Dental periapical opacity
External auditory canal tumor
Metaphyseal bone lesion
Pelvic exostosis
Premature osteoarthritis
Short rib lesion
Solitary opacity in jaw
May Be Caused by
Acrodysostosis
Adenosine deaminase deficiency
Alagille syndrome
Calcaneal spur
Calvarial doughnut lesions-osteoporosis-dentinogenesis imperfecta
Campomelic dysplasia
Carpotarsal osteochondromatosis
Copper deficiency
Desbuquois dysplasia
Diastematomyelia
Ellis-van Creveld syndrome
Familial calvarial hyperostosis
Fetal alcohol syndrome
Fibrodysplasia ossificans progressiva
Heel spur syndrome
Hemophilia
Hereditary multiple exostoses
Hyperparathyroidism
Hypophosphatasia
Iso-Kikuchi syndrome
May-Thurner syndrome
Menkes disease
Mesomelic dysplasia with spur-limbs
Metachondromatosis
Nail-patella syndrome
Normal variant
Occipital horn syndrome
Osteochondroma
Pachydermoperiostosis
Pelvic digit
Pelvic digit or rib
Potocki-Shaffer syndrome
Proteus syndrome
Pseudohypoparathyroidism
Pseudopseudohypoparathyroidism
Radiation injury
Radiation-induced osteochondroma
Rotator cuff tear
Scurvy
Severe combined immune deficiency
Short rib-polydactyly syndrome type 2
Short rib-polydactyly syndrome type 3
Spinal lipoma
Spondyloepimetaphyseal dysplasia with joint laxity
Supracondylar humeral process
Supracondylar spur of humerus
Tethered cord syndrome
Trichorhinophalangeal dysplasia type 2
Tuberous sclerosis
Turner syndrome