MR Imaging of the Articular Cartilage of the Knee and Ankle

Forney, Michael C.; Subhas, Naveen; Donley, Brian G.; Winalski, Carl S.

doi:10.1016/j.mric.2011.02.005

Cited by 25 publications

(33 citation statements)

References 58 publications

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“…Subchondral trabecular micro-fractures (bone bruises), osteochondral fractures and fractures limited to articular cartilage are, according to current doctrine, different manifestations of impact injuries to the joint surface [9,25]. Critical to the description of the cartilage lesion are localization and size, its depth and limitation, accompanying bone marrow edema, which are often associated with pain, as well as any subchondral cysts.…”

Section: Focal Cartilage Damage Of the Anklementioning

confidence: 99%

“…It is also important to note whether the cartilaginous lesion is located in the anterior two-thirds of the joint, since anterior access is necessary for arthroscopically guided therapy. If, however, the lesion is located in the posterior third of the joint, posterior access is required for arthroscopic treatment [25]. Abrupt signal changes of the articular cartilage can indicate a defect that is below the current MR morphological detection limit.…”

Section: Focal Cartilage Damage Of the Anklementioning

confidence: 99%

“…4). Even slight bone marrow edema in MR imaging is sometimes the only indication of subtle cartilage damage in the ankle joint [25].…”

Section: Focal Cartilage Damage Of the Anklementioning

confidence: 99%

“…The osteochondral lesions occur predominantly in the talus with a ratio of occurrences in the tibial plateau to the talar dome of 1 to 20. Most osteochondral lesions are caused by trauma (94 % of lateral lesions and 62 % of medial OCL) [25,28,29]. The symptoms of OCL are unspecific ankle pain and swelling [25,29], often associated with a limitation of dorsal extension.…”

Section: Classification Of Osteochondral Lesionsmentioning

confidence: 99%

“…Most osteochondral lesions are caused by trauma (94 % of lateral lesions and 62 % of medial OCL) [25,28,29]. The symptoms of OCL are unspecific ankle pain and swelling [25,29], often associated with a limitation of dorsal extension. After acute ankle distortion, the incidence of OCL is estimated to be just under 7 % [25,30].…”

Section: Classification Of Osteochondral Lesionsmentioning

confidence: 99%

See 4 more Smart Citations

Modern Cartilage Imaging of the Ankle

Weber

Wünnemann

Jungmann

et al. 2017

Fortschr Röntgenstr

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ABSTR AC TBackground Talar osteochondral lesions are an important risk factor for the development of talar osteoarthritis. Furthermore, osteochondral lesions might explain persistent ankle pain. Early diagnosis of accompanying chondral defects is important to establish the optimal therapy strategy and thereby delaying or preventing the onset of osteoarthritis. The purpose of this review is to explain modern cartilage imaging with emphasis of MR imaging as well as the discussion of more sophisticated imaging studies like CT-arthrography or functional MR imaging.Methods Pubmed literature search concerning: osteochondral lesions, cartilage damage, ankle joint, talus, 2 D MR imaging, 3 D MR imaging, cartilage MR imaging, CT-arthrography, cartilage repair, microfracture, OATS, MACT.Results and Conclusion Dedicated MR imaging protocols to delineate talar cartilage and the appearance of acute and chronic osteochondral lesions were discussed. Recent developments of MR imaging, such as isotropic 3 D imaging that has a higher signal-to noise ratio when compared to 2 D imaging, and specialized imaging methods such as CT-arthrography as well as functional MR imaging were introduced. Several classifications schemes and imaging findings of osteochondral lesions that influence the conservative or surgical therapy strategy were discussed. MRI enables after surgery the noninvasive assessment of the repair tissue and the success of implantation. Key points▪ Modern MRI allows for highly resolved visualization of the articular cartilage of the ankle joint and of subchondral pathologies. ▪ Recent advances in MRI include 3 D isotropic ankle joint imaging, which deliver higher signal-to-noise ratios of the cartilage and less partial volume artifacts when compared with standard 2 D sequences. ▪ In case of osteochondral lesions MRI is beneficial for assessing the stability of the osteochondral fragment and for this discontinuity of the cartilage layer is an important factor. ▪ CT-arthrography can be used in case of contraindications of MRI and in unclear MRI findings as further diagnostic approach. Citation Format

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Section: Focal Cartilage Damage Of the Anklementioning

confidence: 99%

Section: Focal Cartilage Damage Of the Anklementioning

confidence: 99%

“…4). Even slight bone marrow edema in MR imaging is sometimes the only indication of subtle cartilage damage in the ankle joint [25].…”

Section: Focal Cartilage Damage Of the Anklementioning

confidence: 99%