Abnormal processes

Traumatic and mechanical disorders (eg, fractures, sprains, strains, dislocations, repetitive motion injuries)

Neoplastic disorders (eg, osteosarcoma, metastatic disease)

Metabolic, regulatory,

and structural disorders (eg, dwarfism, osteogenesis imperfecta, osteomalacia, osteoporosis, osteodystrophy, gout)

Vascular disorders (eg, polyarteritis nodosa, bone infarcts)

Systemic disorders affecting the musculoskeletal system (eg, diabetes mellitus)

Idiopathic disorders (eg, Dupuytren contracture, scoliosis, Paget disease)

Degenerative disorders (eg, disc disease, osteoarthritis)

Infectious, inflammatory, and immunologic

disorders

• Infectious disorders (eg, septic arthritis, Lyme disease, osteomyelitis)
• Inflammatory disorders (eg, fibrositis, synovitis, tenosynovitis)
• Immunologic disorders (eg, rheumatoid arthritis, ankylosing spondylitis, polymyositis, systemic lupus erythematosus, dermatomyositis, polymyalgia rheumatica)

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