Evaluation Of The Acetabular Labrum By MR Arthrography

Abstract

Since January 1993 we have carried out MR arthrography on 23 patients with clinical symptoms and signs of abnormality of the acetabular labrum. Most of the patients were young adults. Such symptoms are known precursors of osteoarthritis, and therefore early and accurate evaluation is required. We assessed the value of MR arthrography of the hip as a minimally-invasive diagnostic technique, in a prospective study and compared the findings with those at subsequent operations. All the patients complained of groin pain; 22 had a positive acetabular impingement test and 15 had radiological evidence of hip dysplasia. In 21 of the patients, MR arthrography suggested either degeneration or a tear of the labrum or both. These findings were confirmed at operation in 18 patients, but there was no abnormality of the labrum in the other three. In two of the patients, MR arthrography erroneously suggested an intact labrum. Both MR arthrography and intraoperative inspection located lesions of the superior labrum most often, and these appeared slightly larger on arthrography than at operation. We consider that MR arthrography is a promising diagnostic technique for the evaluation of abnormalities of the acetabular labrum.

Diagnostic accuracy of magnetic resonance imaging and magnetic resonance arthrography of the hip is dependent on specialist training of the radiologist

“…MR arthrogram (MRA) is particularly sensitive and specific for labral pathology [4][5][6][7][8]. It is reported to have sensitivity for labral tear diagnosis of up to 100% [9].…”

Open Therapy of Femoroacetabular Impingement

“…Die Diagnose eines FAI wird aufgrund der Klinik, radiologischer Parameter und einer speziellen Magnetresonanztomographie (MRT) der Hüfte mit intraartikulärem Kontrastmittel und radiären Sequenzen gestellt [7,11]. Im Wesentlichen werden zwei Arten von Impingement unterschieden: Cam (englisch "Nockenwelle") und Pincer (englisch "Zange"; Abbildung 1).…”

Subkapitale Korrekturosteotomie bei der Epiphyseolysis capitis femoris mittels chirurgischer Hüftluxation

“…If, after examination with radial arthro-MRI [15], the cartilage in the acetabulum does not appear too badly damaged, femoral neck osteotomy can be regarded as a possibility on the basis of the same biomechanical considerations that apply to realignment through the epiphyseal plate ( Figure 15a). The femoral neck osteotomy is placed more toward the middle of the femoral neck, that is, so far distally that the retinacular insertions at the head-neck junction are not put at risk.…”