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Isolated pseudogout diagnosed on hip arthroscopy
L C Hamilton1, L C Biant, L N Temple
1South West London Elective Orthopaedic Centre, UK.
Abstract:
Idiopathic calcium pyrophosphate deposition disease (pseudogout) has a variable presentation. Many joints are usually affected; single joint disease is uncommon. We present a case report of primary monoarticular pseudogout affecting the hip. The diagnosis was made on the appearance and analysis of specimens obtained at arthroscopy. Monoarticular pseudogout is rare, but should be considered in the differential diagnosis of any presentation of joint pain.
Insights
Idiopathic calcium pyrophosphate deposition disease, also known as pseudogout, typically affects multiple joints. This case report highlights a rare instance of single-joint (monoarticular) pseudogout in the hip.
Area of Science:
- Rheumatology
- Orthopedics
- Crystal-induced Arthropathies
Background:
- Idiopathic calcium pyrophosphate deposition disease (CPPD), or pseudogout, is characterized by crystal deposition in joints.
- While often polyarticular, CPPD can present atypically.
Observation:
- A case of primary monoarticular pseudogout affecting the hip is presented.
- Diagnosis was confirmed through arthroscopic examination and specimen analysis.
Findings:
- Monoarticular pseudogout is an uncommon manifestation of CPPD.
- The hip joint can be a rare site for isolated pseudogout.
Implications:
- This case underscores the importance of considering monoarticular pseudogout in the differential diagnosis of joint pain, even when polyarticular involvement is more typical.
- Diagnostic considerations for hip pain should include CPPD, particularly when other causes are excluded.
