Pseudodefect of the talar dome: an anatomic pitfall of ankle MR imaging.

Miller, Theodore T.; Bucchieri, John S.; Joshi, Anagha; Staron, Ronald B.; Feldman, Frieda

doi:10.1148/radiology.203.3.9169716

Cited by 16 publications

(6 citation statements)

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“…This difference is primarily attributed to the spatial resolution limitation of the micro‐CT system and limitations in contrast (grayscale) resolution to discern objects of similar densities that are adjacent to each other (Wise and Winkelmann 2009a,b). Moreover, MRI is basically only useful for soft tissue, and pitfalls of using MRI to interpret changes in hard tissues have been repeatedly documented (Miller et al . 1997; Abe et al .…”

Section: Discussionmentioning

confidence: 99%

“…This difference is primarily attributed to the spatial resolution limitation of the micro-CT system and limitations in contrast (grayscale) resolution to discern objects of similar densities that are adjacent to each other (Wise and Winkelmann 2009a,b). Moreover, MRI is basically only useful for soft tissue, and pitfalls of using MRI to interpret changes in hard tissues have been repeatedly documented (Miller et al 1997;Abe et al 2004;Wang et al 2009). Thus, to accurately evaluate the size and shape of small ossifying bones, the bone staining method has an advantage over these other methods, and is suitable to precisely observe developing bones, describe variations, and establish the standard.…”

Section: Comparison Between Bone Staining and Ct And Mrimentioning

confidence: 99%

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Morphological and morphometric study on sphenoid and basioccipital ossification in normal human fetuses

Zhang

Wang

Udagawa

et al. 2011

Congenital Anomalies

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Congenital anomalies of the brain frequently correspond to cranial base anomalies, and a detailed description of morphology and individual variations in the developing cranial base is of clinical importance for diagnosing anomalies. Development of the human cranial base has been studied using dissection, computed tomography, and magnetic resonance imaging, each of which has advantages and disadvantages. We here examined development of the normal human fetal cranial base using bone staining, which allows for direct observation of the ossification centers and precise three-dimensional measurements. We observed alizarin red S-stained sphenoids and basiocciputs of 22 normal formalin-fixed human fetuses with crown-rump lengths (CRL) of 115-175 mm. We defined landmarks and measured sphenoids and basiocciputs using a fine caliper. Growth patterns of these ossifying bones were obtained, and we found similarities and differences among the growth patterns. We also observed individual variations in the ossification patterns, in particular, single- or double-ossification center patterns for the basisphenoid. The orbitosphenoid and basisphenoid widths and ratios of the widths to the total cranial base width were significantly different between the two pattern groups, whereas the other measurements and their ratios to the total cranial base did not differ between the groups. We measured the cerebrum and pons in different sets of 22 human fetuses with CRLs of 105-186 mm and found close relationships with the development of corresponding parts of the cranial base. The results contribute to the quantitative and qualitative information about the growth patterns and variations during human fetal cranial base development.

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Section: Discussionmentioning

confidence: 99%

Section: Comparison Between Bone Staining and Ct And Mrimentioning

confidence: 99%

Morphological and morphometric study on sphenoid and basioccipital ossification in normal human fetuses

Zhang

Wang

Udagawa

et al. 2011

Congenital Anomalies

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“…Pseudodefects-which should not be confused with osteochondral lesions that might be amenable to surgical intervention-have been described in several joints, including the hip (pseudodefect of the acetabular cartilage [2]) and the elbow (pseudodefect of the capitellum [3] and pseudodefect of the trochlear groove [4]). In the ankle, pseudodefects of the talar dome also have been described [5,6].…”

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confidence: 99%

The Notch of Harty (Pseudodefect of the Tibial Plafond): Frequency and Characteristic Findings at MRI of the Ankle

Boutin

Chang

Bateni

et al. 2015

American Journal of Roentgenology

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“…143 Two normal variants of the talus are reported that may be potentially mistaken for an osteochondral lesion on MR. On sagittal images, the normal groove of the posterior talofibular ligament at the posterior aspect of the talus can be misinterpreted as an osteochondral defect. 144 The central pseudodefect of the talus produced by insertion of the tibiotalar fibers of the deltoid ligament into the talus may also mimic an osteochondral defect on the most medial sagittal images. 145 SUMMARY AND CONCLUSION Articular cartilage is a critical component for the function of synovial joints.…”

Section: Diagnosis and Staging Of Osteochondral Lesionsmentioning

confidence: 99%

Imaging of Articular Cartilage Injuries of the Lower Extremity

Winalski

Alparslan

2008

Semin Musculoskelet Radiol

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Imaging has become an important clinical tool in the evaluation of articular cartilage, both in the clinical and research setting. This article reviews the mechanisms of articular cartilage injury in the lower extremities and their implications. Specific examples of acute and chronic repetitive injuries in the hip, knee, and ankle are used to demonstrate the characteristics of articular cartilage lesions on magnetic resonance imaging and multidetector computed tomographic arthrography. Loss of meniscal function in the knee and femoroacetabular impingement in the hip represent sources of repetitive cartilage injury that predispose the joint to osteoarthritis. Acute cartilage injury is exemplified by osteochondral lesions of the talus, which may result in post-traumatic osteoarthritis. Recognition of early cartilage damage and associated lesions may help determine the proper treatment for the patient to delay or prevent progression to osteoarthritis.

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Pseudodefect of the talar dome: an anatomic pitfall of ankle MR imaging.

Abstract: The pseudodefect of the talar dome is a normal groove for the posterior talofibular ligament and should not be misinterpreted as an articular erosion or osteochondral defect.

Cited by 16 publications

References 0 publications

Morphological and morphometric study on sphenoid and basioccipital ossification in normal human fetuses

Morphological and morphometric study on sphenoid and basioccipital ossification in normal human fetuses

The Notch of Harty (Pseudodefect of the Tibial Plafond): Frequency and Characteristic Findings at MRI of the Ankle

Imaging of Articular Cartilage Injuries of the Lower Extremity

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