TOTBİD Dergisi

TOTBİD Dergisi

2016, Cilt 15, Sayı, 1     (Sayfalar: 049-064)

Computed tomography and dynamic digital evaluation in the diagnosis of femoroacetabular impingement syndrome

N. Reha Tandoğan 1, Asım Kayaalp 1, Ş. Eser Şanverdi 2

1 Çankaya Ortopedi ve Ortoklinik, Ankara
2 Çankaya Ortopedi ve İntegra Görüntüleme Merkezi, Ankara

DOI: 10.14292/totbid.dergisi.2016.07
Görüntüleme: 644
İndirme : 782

Computed tomography (CT) provides valuable information in the diagnosis, pre- and post-operative evaluation of femoroacetabular impingement (FAI) syndrome, although it requires high doses of ionizing radiation. The 3 dimensional morphology of the hip joint can be accurately assessed and the typical cam and pincer lesions can be delineated. Several measurements including femoral anteversion, acetabular version, lateral center-edge angle, alpha and beta angles, femoral head-neck offset and omega area are helpful in the objective quantification of the impingement. The data from CT scans can be digitized with dedicated software to obtain dynamic images. These digital dynamic evaluations accurately describe the area and extent of impingement in the hip joint. This data can then be used to plan the amount of surgical resection and simulate the final post-operative situation. CT arthrography may be helpful for the diagnosis of accompanying chondrolabral lesions. CT can also objectively demonstrate extraarticular causes of hip impingement such as subspine and ischio-femoral impingement. Finally, CT is a useful tool to evaluate patients with residual symptoms following surgery for FAI. All radiographic findings should be closely correlated with clinical symptoms since a significant number of asymptomatic cases may have one or more signs of FAI morphology.

Anahtar Kelimeler : femoroacetabular impingement; computed tomography; hip joint