Patellar Alignment and Knee Osteoarthritis
Author Information
Author(s): Kalichman Leonid, Zhang Yuqing, Niu Jingbo, Goggins Joyce, Gale Daniel, Zhu Yanyan, Felson David T, Hunter David J
Primary Institution: Boston University School of Medicine
Hypothesis
Increasing patellar malalignment on MRI would be positively associated with PF radiographic changes (the presence of joint space narrowing and osteophytes).
Conclusion
The study found significant associations between patellar alignment and features of patello-femoral osteoarthritis, such as osteophytosis and joint space narrowing.
Supporting Evidence
- PLR showed a statistically significant association with joint space narrowing and osteophytosis in the lateral compartment.
- SA showed significant association with medial joint space narrowing and with lateral and medial patellar osteophytosis.
- LPTA and BO showed significant association with both radiographic indices of the lateral compartment.
Takeaway
This study looked at how the position of the kneecap affects knee arthritis. It found that if the kneecap is not aligned properly, it can lead to more damage in the knee.
Methodology
The study used a cross-sectional observational design, evaluating patellar alignment through MRI and its association with radiographic features of knee osteoarthritis.
Potential Biases
The study's cross-sectional design limits causal inferences.
Limitations
The MRI was performed in a supine position rather than weight-bearing, which may have affected the measurements.
Participant Demographics
The sample consisted of 126 males (average age 68.0 years, BMI 31.2) and 87 females (average age 64.7 years, BMI 31.6).
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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