Association of Traumatic Knee Injury With Radiographic Evidence of Knee Osteoarthritis in Military Officers
Main finding · Prevalence of radiographic OA (K/L grade ≥ 2), injured vs noninjured kneesResult — go to the resultPrevalence difference +16% 95% CI 10%–22%Authors' conclusion
At the midpoint of a projected 20-year military career, officers with a history of traumatic knee injury have a markedly increased prevalence of knee radiographic OA compared to officers without injury.
Study context
- Population
- Military officers recruited in 2015–2017 from an existing program that enrolled 6,452 military officers during 2004–2009 (mean age 28 years, mean BMI 25 kg/m², ≈40% female)
- Participants
- 117 vs 143
- Exposure
- Officers with a history of knee ligament or meniscal injuries vs officers with no history of knee injury
- Injuredn = 117
- Noninjuredn = 143reference
- Outcome
- Radiographic OA (K/L grade ≥ 2) on bilateral posteroanterior knee radiographs
Methodological detailslinear-risk regression models with generalized estimating equations, standardized fixed-flexion positioning frame
- Linear-risk regression models with generalized estimating equations
- Standardized fixed-flexion positioning frame
Main finding
As reported in the abstract
Prevalence of radiographic OA (K/L grade ≥ 2), injured vs noninjured knees
Prevalence difference
+16%
95% CI 10%–22%
Observational data: associations, not effects.
Further findings
| Outcome | Prevalence difference (95% CI) |
|---|---|
| Prevalence of OST (grade ≥ 1), injured vs noninjured knees | +29% (20%–38%) |
| Prevalence of JSN (grade ≥ 1), injured vs noninjured knees | + 17% (10%–24%) |
- Mean time from first knee injury to imaging (injured participants)
- 9.2 · mean · years
Progression to radiographic osteoarthritis (OA) by age 30 years among officers with prior knee injury
- ≈1 in 6 officers with prior knee injury progressed to radiographic OA by age 30 years
Original publication
Association of Traumatic Knee Injury With Radiographic Evidence of Knee Osteoarthritis in Military Officers. Arthritis Care Res (Hoboken). Published 5 February 2023. doi:10.
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