The Role of High Resolution Ultrasound in the Assessment of Knee Osteoarthritis
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- Category: Vol. 87, December 2019
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The Role of High Resolution Ultrasound in the Assessment of Knee Osteoarthritis, SAMAR M.I. SHAABAN, MARWA I. FAHMY and TAREK W. HEMADA
Abstract
Background: Osteoarthritis (OA) is a common muscu-loskeletal disease with high prevalence worldwide. Knee OA is primary diagnosed using conventional radiography, however, changes of articular cartilage or menisci cannot be directly assessed using conventional radiology. Ultrasound (US) can be used to assess soft tissue degeneration directly.
Aim of Study: The aim of this study is to evaluate the efficacy of High Resolution Ultrasound (HRUS) in the assess-ment of structural abnormalities found in knee osteoarthritis.
Patients and Methods: The study was conducted upon 20 patients with knee OA (12F, 8M; mean age 53 years), each subject was evaluated for the presence of medial and lateral femoral cartilage thinning, medial and lateral femoral and tibial osteophytes, medial and lateral meniscal degeneration, joint effusion and Baker's cyst using ultrasound and MRI, considering MRI as a reference standard.
Results: The overall sensitivity of the ultrasound in the detection of knee OA parameters was good (89.3%), the overall accuracy was excellent (90%), the overall specificity was excellent (93.1%). The Positive Predictive Value (PPV) and the Negative Predictive Value (NPV) were 98.3 and 65.9 respectively. The p-value was highly significant (<0.01) when comparing assessment of knee osteoarthritis parameters be-tween ultrasound and MRI.
Conclusion: Ultrasound assessment of the knee joint is an accurate imaging method for detection of knee osteoarthritis parameters including medial and lateral femoral articular cartilage thinning, medial and lateral osteophytes, medial and lateral meniscal degeneration, joint effusion and Baker's cyst. Thus, Knee ultrasound can be used as a complementary imaging technique to radiography, especially when MRI is not available, to assess tissue-specific structural OA degener-ation not detected by conventional radiographs.