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Monoarticular pseudogout of the hip: a case report
Kathleen E Brennan1, Brian J McGrory
1Tufts University School of Medicine, Boston, MA, USA.
Abstract:
Monoarticular pseudogout is a rare cause of acute hip pain, and may mimic hip joint infection. We present a case of monoarticular pseudogout in an 85-year-old woman. Diagnosis was confirmed with hip joint aspiration and crystal analysis. The patient was treated with intra-articular corticosteroids, and her symptoms resolved.
Insights
Monoarticular pseudogout, a rare cause of acute hip pain, can mimic infection. This case highlights successful treatment with intra-articular corticosteroids, confirming diagnosis via joint aspiration and crystal analysis.
Area of Science:
- Rheumatology
- Orthopedics
- Crystal Arthropathies
Background:
- Monoarticular pseudogout is an uncommon condition presenting as acute joint pain.
- It can be mistaken for septic arthritis, necessitating accurate diagnosis.
- The hip joint is a rare site for pseudogout, making diagnosis challenging.
Observation:
- An 85-year-old woman presented with acute hip pain.
- Clinical presentation mimicked hip joint infection.
- Diagnosis was confirmed through hip joint aspiration and subsequent crystal analysis.
Findings:
- Analysis of synovial fluid revealed calcium pyrophosphate dihydrate (CPPD) crystals.
- The patient received intra-articular corticosteroid injections.
- Symptoms of acute hip pain resolved following treatment.
Implications:
- This case underscores the importance of considering pseudogout in the differential diagnosis of acute hip pain, even in rare presentations.
- Intra-articular corticosteroid injection is an effective treatment for alleviating symptoms of monoarticular pseudogout.
- Early and accurate diagnosis, aided by joint aspiration and crystal identification, is crucial for appropriate management and preventing unnecessary interventions for suspected infection.