Is hypertrophic osteoarthropathy really so rare in regional enteritis?

We describe a patient with hypertrophic osteoarthropathy secondary to regional enteritis, and review the literature on their association. The apparent different distribution of hypertrophic osteoarthropathy secondary to other causes may be artifactual and related to inadequate radiological investigation. Hypertrophic osteoarthropathy does not appear to be related to regional enteritis activity.