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[Computed tomography of the menisci]
C Wagner-Manslau1, N Rupp, O Paar
1Institut für Röntgendiagnostik, Klinikum rechts der Isar, München.
Summary
Computed tomography (CT) of the knee meniscus offers superior visualization for detecting lesions and degenerative changes compared to arthrography and arthroscopy. CT is recommended before arthroscopy for accurate meniscus evaluation.
Area of Science:
- Orthopedics
- Radiology
- Medical Imaging
Background:
- Meniscal tears are common knee injuries.
- Accurate diagnosis of meniscal pathology is crucial for effective treatment.
- Current diagnostic methods like arthrography and arthroscopy have limitations.
Purpose of the Study:
- To evaluate the diagnostic efficacy of computed tomography (CT) for meniscal abnormalities.
- To compare CT findings with arthroscopy and arthrography.
- To determine if CT can replace conventional diagnostic procedures for menisci.
Main Methods:
- Thirty patients with suspected meniscal pathology underwent CT examination of the knee.
- All CT findings were correlated with arthroscopic surgical confirmation.
- Comparison was made between CT, arthrography, and arthroscopy findings.
Main Results:
- CT accurately demonstrated degenerative changes in seven patients.
- CT identified one meniscus ganglion.
- CT revealed seven meniscus lesions not detected by arthrography or arthroscopy.
- One false positive diagnosis of a torn meniscus was attributed to partial volume effect.
Conclusions:
- CT of the menisci provides clear demonstration of lesions and degenerative changes.
- CT is a valuable tool for diagnosing meniscal pathology.
- CT examination of the menisci can replace knee arthrography and should precede arthroscopy.