![]() Ultrasound can depict joint effusions and synovitis by increased synovial vascularization and can detect osteophytes. ![]() ![]() Recommended scoring systems are the Kellgren and Lawrence score and the OARSI atlas 10. ![]() The radiological classification systems that are used for the assessment of osteoarthritis of the hip, the Kellgren and Lawrence score 14, the Croft score 15 and the Tönnis classification are all susceptible to subjectivity, but the first is apparently the most reliable 10,16.Īnother semi-quantitative method, which does not give a definition of osteoarthritis by grade, but grades different features of osteoarthritis as femoral and acetabular osteophyte formation as well as superior and medial joint space narrowing is the OARSI atlas 10,17. The minimal joint space width is measured between the femoral head and the nearest part of the acetabular sourcil (representing the weight-bearing surface) 29. ESR <20 mm/h) can be used as an indicator of osteoarthritis 13. Hip joint space width ≤2 mm or <2.5 mm 10-12 or the combination of joint space narrowing with the presence of osteophytes, in particular, in the absence of any elevated inflammatory markers (e.g. Plain radiographs of the hip are a cheap, widely available and easily obtained modality and their interpretation in the evaluation of osteoarthritis is not as difficult as other imaging modalities 8-10.įor the indication of osteoarthritis of the hip, an anteroposterior radiograph of the hip and a cross-table lateral or frog-leg lateral view are obtained. Subchondral cyst formation and remodeling of the articular surfaces or deformity are seen in more advanced stages. General features are osteophyte formation, joint space narrowing and sclerosis of the subchondral bone plate. Osteoarthritis of the hip can be classified into primary and secondary, depending on whether it is due to a known predisposing factor or not.
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