Bilateral congenital absence of the patella in an adult: case report

Bilaterally absent patella is a rare clinical entity. Most documented cases occur in association with Nail- Patella Syndrome. This patient presented at 60 years of age with severe bilateral knee arthritis and was found to have bilaterally absent patella which had previously been undiagnosed. The patient was managed with bilateral knee replacements. This presentation highlights the need for vigilance of the condition in patients presenting with knee arthritis.