Diagnostische Wertigkeit der MR-tomographischen Knorpelläsionsdarstellung im Vergleich mit der intraoperativen Arthroskopie bei Calcaneusfrakturen

Abstract

The MR detection of cartilaginous defects in calcaneal fractures has a sufficient diagnostic accuracy for planning the surgical intervention and assessing the long-term postsurgical prognosis.

Delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) and morphologic MRI of cartilage in the long-term follow-up after Legg-Calvé-Perthes disease (LCPD)

“…12,30,31 A high correspondence of intraoperative arthroscopic and MRI-based Outerbridge classification in the subtalar joint has been demonstrated. 15 In the patellofemoral joint cartilage, a significant correlation of the arthroscopic Outerbridge classification and dGEMRIC values has been shown. 31 In the present study,24 of 31 hips with a history of LCPD morphological damage of the superior joint cartilage could be detected.…”

“…The Outerbridge classification is widely accepted for the assessment of cartilage defects 12,30,31 . A high correspondence of intraoperative arthroscopic and MRI‐based Outerbridge classification in the subtalar joint has been demonstrated 15 . In the patellofemoral joint cartilage, a significant correlation of the arthroscopic Outerbridge classification and dGEMRIC values has been shown 31 .…”

“…[12][13][14] High validity of the Outerbridge classification based on morphologic MRI cartilage sequences was noted by direct comparison with arthroscopic examinations in the knee joint and subtalar joint. 15,16 At the molecular level, the glycosaminoglycan (GAG) content of cartilage may decrease without visible morphological changes. 17 GAGs are long unbranched negatively charged polysaccharides with surface linkage to cartilage proteins, forming proteoglycans.…”

“…The modified classification according to Outerbridge has gained acceptance in the grading of morphological cartilage damage 12–14 . High validity of the Outerbridge classification based on morphologic MRI cartilage sequences was noted by direct comparison with arthroscopic examinations in the knee joint and subtalar joint 15,16 …”