Limitations of radiographs in evaluating non-displaced osteochondral lesions of the talus

Dheer, Sachin; Khan, Mustafa; Zoga, Adam C.; Morrison, William B.

doi:10.1007/s00256-011-1242-z

Cited by 12 publications

(6 citation statements)

References 14 publications

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“…It has been published that MRI has the ability to stage osteochondral lesions of the talus with accuracies ranging from 81% to 83% by several authors. 4,5 In the present study, the correlation rate was relatively low (65.9%).…”

Section: Discussioncontrasting

confidence: 63%

“…16 But radiographs are limited in their evaluation of the size (particularly the anteroposterior dimension) and characteristics (fragmentation, cystic change, and avascular necrosis) of nondisplaced OLT. 5 The most common appearance of nondisplaced OLT is an "ill-defined" lucency of the talar dome. 5 CT lacks the ability to assess the cartilage.…”

Section: Discussionmentioning

confidence: 99%

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Comparison of Arthroscopic and Magnetic Resonance Imaging Findings in Osteochondral Lesions of the Talus

Bae

Lee

et al. 2012

Foot Ankle Int.

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Section: Discussioncontrasting

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Comparison of Arthroscopic and Magnetic Resonance Imaging Findings in Osteochondral Lesions of the Talus

Bae

Lee

et al. 2012

Foot Ankle Int.

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“…If CT scans were unavailable, the defect size was measured with use of magnetic resonance imaging (MRI) (used in three patients) or conventional radiography. CT is preferred for the assessment of the preoperative size of talar osteochondral defects 20,21 , whereas radiographs are less reliable 22 . The authors have used CT routinely since 1993.…”

Section: Imagingmentioning

confidence: 99%

Arthroscopic Treatment of Osteochondral Defects of the Talus

Bergen

Kox

Maas

et al. 2013

The Journal of Bone and Joint Surgery

160

143

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“…Although this method can improve the cartilage surface visibility of talar dome, the risk is still potential (15). The results of some published studies show that MRI has the ability to display osteochondral lesions of the talus with accuracies ranging from 65.9% to 83.0% (18)(19)(20). In this study, we came to the following conclusions: the total rate of correct classification was relatively high (90.1%) in the small FOV BLADE sequence group and relatively low (75.25%) in the routine FOV sequence group.…”

Section: Discussionmentioning

confidence: 99%

Magnetic Resonance Imaging of Osteochondral Lesions of the Talus: Comparison Between Small FOV Surface Coil with BLADE and Boot-Shape Coil Without BLADE

Sun

Hao

et al. 2019

Iran J Radiol

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Background: It is common for osteochondral lesions of the talus (OLT) to be associated with ankle injury, residual ankle stiffness and pain after osteochondral injuries, and OLTs are most common in the dome of the talus. Before choosing the appropriate therapy based on diagnosis, it is necessary to determine if the OLT is a stabile lesion or not. More accurate diagnosis and classifications could be conducted to guide the clinical treatment. Objectives: To compare the accuracy rate and diagnostic indices of proton-density fat-saturation BLADE (proprietary name for periodically rotated overlapping parallel lines with enhanced reconstruction in magnetic resonance systems from Siemens Healthcare) sequences from a small field of view (FOV) surface coil and proton-density fat-saturation sequences without BLADE in a routine FOV using a boot-shaped coil on the magnetic resonance imaging (MRI) of OLT. Patients and Methods: One hundred and one patients with ankle pain for greater than 6 weeks and normal X-ray participated in this study. They were ready for diagnosis by arthroscopy and treatment following MR examination. All patients were scanned by two different methods: (a) a coronal proton-density fat-saturated sequence with BLADE using a small FOV surface coil and (b) a coronal proton-density fat-saturated sequence without BLADE using a routine FOV boot coil. In this study, the arthroscopic results were regarded as the gold standard for assessing OLTs and were used to directly compare the ability of the two different scanning methods to produce accurate findings with regard to MR imaging of OLTs. Results: Of the 101 patients, 57 patients with cartilaginous injury were confirmed by the results of arthroscopy, and 44 patients were without cartilaginous injury. Forty-eight lesions had the same grade with the small FOV BLADE sequence MRI and arthroscopy, while 37 lesions had the same grade on routine FOV MRI and arthroscopy among 57 patients with cartilaginous injury. Among MR findings of 101 patients, the results of weighted Kappa, accuracy, sensitivity and specificity were 0.803, 90.10%, 84.21%, and 97.73%, respectively between small FOV and arthroscopy; 0.515, 75.25%, 64.91%, and 88.64%, respectively between routine FOV and arthroscopy. The accuracy rate, sensitivity and specificity of small FOV with BLADE were higher than routine FOV. Mc Nemar's test confirmed that the accuracy, sensitivity and specificity of small FOV BLADE were significantly better than routine FOV (P < 0.001). Greater values of small FOV compared to routine FOV appeared in sensitivity of 0.94 vs. 0.81 (MR normal and grade I), 0.89 vs. 0.77 (MR normal and grade I-IIA), 0.90 vs. 0.74 (MR normal and grade I-IIB), 0.91 vs. 0.75 (MR normal and grade I-III) and specificity of 0.98 vs. 0.92 (MR normal and grade I), the same in specificity of 0.91 vs. 0.91 (MR normal and grade I-IIA), 0.80 vs. 0.80 (MR normal and grade I-III), only smaller in specificity of 0.60 vs. 0.80 (MR normal and grade I-IIB). Conclusion: Small FOV surface coil with BLADE sequence grad...

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Limitations of radiographs in evaluating non-displaced osteochondral lesions of the talus

Cited by 12 publications

References 14 publications

Comparison of Arthroscopic and Magnetic Resonance Imaging Findings in Osteochondral Lesions of the Talus

Comparison of Arthroscopic and Magnetic Resonance Imaging Findings in Osteochondral Lesions of the Talus

Arthroscopic Treatment of Osteochondral Defects of the Talus

Magnetic Resonance Imaging of Osteochondral Lesions of the Talus: Comparison Between Small FOV Surface Coil with BLADE and Boot-Shape Coil Without BLADE

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