الفهرس 
Anatomy of the Knee JointOnly 14 pages are availabe for public view
 |  | from | 110 |  |  |
| | | from | 110 | | |
Abstract
o
ur Study was carried out upon 20 patients with knee OA (12 females and 8 males), with a mean age of 52.85 ± 11.2 years (ranged between 35 – 75 years). These patients were selected from those who were referred to radiology department from rheumatology or orthopedics outpatient clinics.
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.
The sensitivity, specificity, accuracy, PPV, NPV and the P value for each parameter were calculated.
In our study, ultrasound showed excellent sensitivity in the detection of medial cartilage thinning (90%), medial osteophytes (90%), medial and lateral meniscal degeneration (9404% and 93.3%), joint effusion (90%) and Baker’s cyst (100%).
It showed good sensitivity in the detection of lateral osteophytes (87.5%), while its sensitivity was fair in the detection of lateral cartilage thinning (75%).
The overall sensitivity of the ultrasound in the assessment of knee OA was good (89.3%), the overall accuracy was excellent (90%) and the overall specificity was 93.1%.
The P values were highly significant for medial and lateral meniscal degeneration, lateral osteophytes and Baker’s cyst (<0.01), while only the P value for lateral femoral cartilage thinning was non-significant (P value = 0.06).
In conclusion, ultrasound assessment of the knee joint is an accurate imaging method for detection of knee osteoarthritis parameters including 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 degeneration not detected by conventional radiographs.