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. 2018 Feb 2;15(1):173-176.
doi: 10.1016/j.jor.2018.01.044. eCollection 2018 Mar.

Computed tomography findings of subchondral insufficiency fractures of the femoral head

Kenyu Iwasaki  1 , Takuaki Yamamoto  2 , Goro Motomura  3 , Kazuyuki Karasuyama  3 , Kazuhiko Sonoda  3 , Yusuke Kubo  3 , Yasuharu Nakashima  3
Affiliations

Computed tomography findings of subchondral insufficiency fractures of the femoral head

Kenyu Iwasaki et al. J Orthop. .

Erratum in

Abstract

Objectives: The objective of this study was to describe the appearance of Subchondral insufficiency fracture (SIF) by computed tomography (CT).

Methods: Images of 52 consecutive patients diagnosed with SIF were retrospectively reviewed. CT was available for five patients (7 cases).

Results: Corresponding to a low-intensity band on MR images, a radiolucent or sclerotic band was observed on CT images.

Conclusion: The present study is the first to report CT findings of SIF. A radiolucent or sclerotic band was observed on CT images. The results of the present study provide useful information for diagnosis of SIF.

Keywords: Computed tomography; Magnetic resonance imaging; Subchondral insufficiency fracture of the femoral head.

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Figures

Fig. 1
Fig. 1
A 47-year-old male (Case 2 in Table 1): (a) T1-weighted MR image on coronal slice shows a low-signal intensity band (arrows). (b) CT (coronal slice) shows a sclerotic band corresponding to the band on the MR image (arrowheads). A 23-year-old male (Case 4 in Table 1): (c) T1-weighted MR image on coronal slice shows a low-signal intensity band (arrows), (d) CT (coronal slice) shows a radiolucent band corresponding to the band on the MR image (arrowheads) and collapse of the femoral head. No sclerotic band is observed.
Fig. 2
Fig. 2
An 81-year-old female (Case 6 in Table 1): (a) T1-weighted MR image (coronal slice) shows a low-signal intensity band (white arrows). (b) CT (coronal slice) shows a radiolucent band corresponding to the band on the MR image (white arrowheads) and collapse of the femoral head. No sclerotic band is observed. (c) A cut section of the resected femoral head shows a whitish linear-shaped area beneath the articular cartilage. (d) Fracture calli (black arrows) and granulation tissue (black arrowheads) are observed (hematoxylin and eosin staining; magnification, ×100).
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