2022
DOI: 10.1016/j.arth.2022.02.009
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The 2021 Association Research Circulation Osseous Classification for Early-Stage Osteonecrosis of the Femoral Head to Computed Tomography–Based Study

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Cited by 21 publications
(22 citation statements)
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“…“Crescent sign” was replaced with “subchondral fracture.” Stage 3 was subdivided into early (3A) and late (3B) stage according to depth (less than/equal to or greater than 2 mm) of head depression, and “fracture in necrotic portion” was added to the description of stage 3 10,11 . Subclassification of location and size of the necrotic area was not incorporated into the 2019 revised version 10,11,26 . The revised version mainly focused on analysis of CT image findings, because of the sensitivity to various fracture types, which is important for distinguishing ARCO stages 2 and 3 26 .…”
Section: Discussionmentioning
confidence: 99%
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“…“Crescent sign” was replaced with “subchondral fracture.” Stage 3 was subdivided into early (3A) and late (3B) stage according to depth (less than/equal to or greater than 2 mm) of head depression, and “fracture in necrotic portion” was added to the description of stage 3 10,11 . Subclassification of location and size of the necrotic area was not incorporated into the 2019 revised version 10,11,26 . The revised version mainly focused on analysis of CT image findings, because of the sensitivity to various fracture types, which is important for distinguishing ARCO stages 2 and 3 26 .…”
Section: Discussionmentioning
confidence: 99%
“…10,11 Subclassification of location and size of the necrotic area was not incorporated into the 2019 revised version. 10,11,26 The revised version mainly focused on analysis of CT image findings, because of the sensitivity to various fracture types, which is important for distinguishing ARCO stages 2 and 3. 26 The revised version mentions that fractures in osteonecrosis range from subchondral fracture to fracture in necrotic portion.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The pathogenesis of ONFH is complex, varied, and remains unclear, but commonly accepted causes involve hormone use, alcohol abuse, and trauma [17][18][19] . In this study, the incidence of alcoholic ONFH among female patients was very low.…”
Section: Discussionmentioning
confidence: 99%
“…Osteoarthritic manifestations of the hip, such as narrowing of the joint space, acetabular changes, and destruction, are visible on imaging in ARCO stage IV [ 2 ]. Koo et al [ 3 ] suggested the predictability of femoral head collapse in patients with osteonecrosis, which adds to the spectrum of possibilities for treating patients with intermediate to advanced stage diseases. ONFH is clinically managed by total hip arthroplasty (THA), as conservative treatment and hip preservation therapy are insufficient to satisfy the patients’ needs for daily living.…”
Section: Introductionmentioning
confidence: 99%