Abstract
Cranio-Osteoarthropathy (COA) is a very rare form of primary hypertrophic osteoarthropathy (HOA). HOA is characterised by digital clubbing, arthropathy, pachyderma and sub-periosteal new bone formation along shafts of long bones. In COA, decreased neurocranium ossification is seen without the pachyderma feature.
Highlights
Cranio-Osteoarthropathy (COA) is a very rare form of primary hypertrophic osteoarthropathy (HOA)
Case report Female child born at term to consanguineous parents from Asian ethnicity needed surgical ligation of a large patent ductus arteriosus (PDA) during the neonatal period
At the age of 7 years, she presented to the rheumatology team with swelling, pain and stiffness in her knees and ankles; her joint symptoms dated back to since was 3 years old
Summary
Cranio-Osteoarthropathy (COA) is a very rare form of primary hypertrophic osteoarthropathy (HOA). HOA is characterised by digital clubbing, arthropathy, pachyderma and sub-periosteal new bone formation along shafts of long bones. In COA, decreased neurocranium ossification is seen without the pachyderma feature
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