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Radiographic knee dimensions in discoid lateral meniscus: comparison with normal control
1Department of Orthopaedic Surgery, Yonsei University Medical College, Seoul, Korea.
Summary
Radiographs can help screen for discoid lateral meniscus, a knee condition. High fibular head and widened lateral tibiofemoral joint space are key indicators on knee X-rays.
Area of Science:
- Orthopedics
- Radiology
- Anatomy
Background:
- Discoid lateral meniscus is a congenital anomaly.
- Accurate diagnosis is crucial for effective treatment.
Purpose of the Study:
- To identify radiographic features indicative of discoid lateral meniscus.
- To evaluate the utility of plain radiography in screening for this condition.
Main Methods:
- Retrospective review of knee radiographs from 68 patients with arthroscopically confirmed discoid lateral meniscus (42 complete, 26 incomplete) and 70 controls.
- Exclusion of patients under 16 or over 60, and those with significant trauma history.
- Comparison of specific knee dimensions between groups, including femoral condyle shape, joint space width, tibial plateau morphology, fibular head height, and intercondylar spine hypoplasia.
Main Results:
- Statistically significant differences were observed in high fibular head and widened lateral tibiofemoral joint space between the discoid lateral meniscus group and controls.
- Other measured dimensions did not show significant differences.
Conclusions:
- High fibular head and widened lateral tibiofemoral joint space are valuable radiographic indicators for screening discoid lateral meniscus.
- Plain radiography can serve as a useful tool for initial detection of discoid lateral meniscus.