Acute calcium pyrophosphate crystal arthritis is associated with an increased rate of hip and knee joint surgery
Main finding · Hip and knee joint arthroplasty rateResult — go to the resultStandardized surgical rate ratio 2.54 95% CI 1.39–4.27Authors' conclusion
Our study identified a considerable increase in the rate of hip and knee joint arthroplasties in patients with episodes of acute CPP crystal arthritis.
Study context
- Population
- Patients with acute CPP crystal arthritis, Waikato District Health Board, New Zealand (63 male; median age 77 years)63 male
- Participants
- 99 patients
- Exposure
- Acute CPP crystal arthritis cohort vs age-ethnicity-matched New Zealand population
- Acute CPP crystal arthritisn = 99
- Outcome
- Rate of hip and knee joint arthroplasties (estimate of structural joint damage accrual), New Zealand Orthopaedic Association's Joint Registry
Methodological detailscomparison with age-ethnicity-matched New Zealand population
- Comparison with age-ethnicity-matched New Zealand population
Main finding
Hip and knee joint arthroplasty rate
Standardized surgical rate ratio
2.54
95% CI 1.39–4.27
Acute CPP crystal arthritisvs New Zealand population
standardized surgical rate ratio 2.54 (95% CI 1.39–4.27)
As reported in the abstract
Observational data: associations, not effects.
Further findings
Obesity (BMI) in the cohort vs NZ population
- Obesity rate
- 36%
- Median BMI 28.4 kg/m² (IQR 25.8-32.2), comparable to the NZ population
Original publication
Acute calcium pyrophosphate crystal arthritis is associated with an increased rate of hip and knee joint surgery. Rheumatology (Oxford). Published 20 June 2023. doi:10.
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