Skeletal Radiology最新文献

{"title":"Quantitative DCE-MRI assessment of femoral head epiphysis perfusion after closed reduction in developmental dysplasia of the hip.","authors":"Hong Wang, Shu Wang, Shan Lin, Hui Li","doi":"10.1007/s00256-026-05170-x","DOIUrl":"10.1007/s00256-026-05170-x","url":null,"abstract":"<p><strong>Objective: </strong>To investigate femoral head epiphysis perfusion via dynamic contrast-enhanced MRI (DCE-MRI) in children with developmental dysplasia of the hip (DDH) after closed reduction, assessing correlations between perfusion parameters and enhancement grades, and their utility in identifying post-reduction ischemia.</p><p><strong>Materials and methods: </strong>Children with DDH undergoing closed reduction and plaster fixation were evaluated with MRI (conventional sequences, T1 mapping, and DCE-MRI) within 3 days post-procedure. Femoral head perfusion was evaluated using DCE-MRI subtraction, graded as 0 (normal), 1 (asymmetric decrease), 2 (focal decrease), or 3 (complete decrease). Perfusion parameters (K^trans, K_ep, V_e) were quantified in the epiphyseal ROI. The correlation with perfusion grades and diagnostic value for ischemia was analyzed.</p><p><strong>Results: </strong>The study included 58 DDH patients (116 hips; 68 dislocated, 48 normal). Among the dislocated side of DDH, although a marginal age difference was observed among the groups (P = 0.053), no significant differences were found in sex distribution or Tönnis grade (P > 0.05). Significant perfusion parameter differences were observed across enhancement grades (all P < 0.05), with K^trans showing greatest discrimination (H = 89.769). K^trans and K_ep correlated negatively with enhancement grade (r = -0.883 and -0.608, respectively; both P < 0.001). For ischemia detection (grade ≥ 2), K^trans demonstrated superior diagnostic accuracy (AUC = 0.959, cutoff = 0.028 min^-1) versus K_ep (AUC = 0.811) and V_e (AUC = 0.628). Performance further improved for grade 3 ischemia (K^trans AUC = 0.992, cutoff = 0.010 min^-1).</p><p><strong>Conclusion: </strong>K^trans < 0.010 min^-1 on DCE-MRI signals post-reduction ischemia in dislocated femoral heads, inversely correlating with enhancement grade. This threshold may help identify high-risk patients requiring close monitoring or intervention.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1337-1346"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146202366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Publication metrics by rank: assessing musculoskeletal radiology faculty.","authors":"Mahla Radmard, Brady K Huang, Edward Smitaman, David M Yousem, Donald L Resnick, Christine B Chung","doi":"10.1007/s00256-026-05129-y","DOIUrl":"10.1007/s00256-026-05129-y","url":null,"abstract":"<p><strong>Objective: </strong>Academic promotion in radiology frequently depends on measurable indicators of scholarly productivity such as publications, citations, and h-index. While several radiologic subspecialties have reported benchmarks for academic output, standardized metrics specific to musculoskeletal (MSK) radiology remain unavailable. This study aims to establish national reference values for publication productivity among U.S. MSK radiologists across academic ranks.</p><p><strong>Materials and methods: </strong>A cross-sectional bibliometric analysis of academic MSK radiology faculty in the United States was performed using Scopus data collected in October 2025. Variables extracted included the number of publications, total citations, and h-index. Descriptive statistics and percentile distributions were calculated across ranks (assistant, associate, and full professor). Comparative analyses by sex and rank were performed using nonparametric tests (Mann-Whitney U and Kruskal-Wallis).</p><p><strong>Results: </strong>A total of 679 MSK radiologists from 93 academic institutions were included. Scholarly output increased progressively with academic rank (p < 0.001). Median publication counts were 5 for assistant, 15.5 for associate, and 77 for full professors; median citations rose from 38 to 222 to 1915, respectively, while median h-index values increased from 2 to 7 to 23. No significant sex differences were observed at the assistant or associate professor ranks. However, male full professors had higher citations and h-indices compared to female full professors (p = 0.04).</p><p><strong>Conclusion: </strong>This national analysis provides standardized, rank-specific results for publication productivity in MSK radiology. The percentile-based data offer reference points for self-assessment, departmental evaluation, and promotion considerations, and demonstrate the degree to which scholarly output increases with increasing academic rank.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1365-1373"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146257998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of calcium suppression imaging on hand and wrist fracture detection in spectral CT: a comparison with X-ray and CT.","authors":"Thomas Marth, Franziska Adomat, Fides R Schwartz, Tim S Fischer, Reto Sutter, Anna L Falkowski","doi":"10.1007/s00256-026-05156-9","DOIUrl":"10.1007/s00256-026-05156-9","url":null,"abstract":"<p><strong>Objectives: </strong>To evaluate the impact of calcium suppression (CaSupp) imaging of spectral computed tomography (SpCT) on fracture detection in clinical routine in the acute trauma setting of the hand and wrist.</p><p><strong>Materials and methods: </strong>Retrospective inclusion of 125 patients who underwent both X-ray and SpCT examinations of the hand and wrist in an acute trauma setting. Two independent readers evaluated fracture presence on X-ray, conventional CT, and conventional CT plus CaSupp images (time interval 4 weeks, each). Bone bruise (BBr) presence was evaluated on CaSupp images. Sensitivity and specificity were calculated according to the consensus reading as the reference standard.</p><p><strong>Results: </strong>Of the 125 patients (mean age, 55 years ± 19.5 [SD]; 67 female), 120 presented with at least one fracture, for a total of 212 fractured bones. Sensitivity was increased significantly for both readers in CT + CaSupp (94.3 and 97.2%) compared to conventional CT (88.2 and 90.1%, p < .01) and X-ray (72.6 and 75.9%, p < .01). Specificity was 99.9 and 100% for CT + CaSupp, 99.8 and 99.9% for conventional CT, and 99.4 and 99.9% for X-ray. Reader 1 detected 13 additional fractures in CT + CaSupp compared to conventional CT alone, while Reader 2 detected 15 additional fractures. BBr was seen in 58% of all fractures, in 76% of multifragmentary fractures, and in 13% of avulsion fractures. Inter-reader κ was almost perfect for X-ray (κ = .85), CT and CT + CaSupp (κ = .95), and substantial for BBr (κ = .61).</p><p><strong>Conclusion: </strong>CaSupp images in combination with conventional CT images significantly improved sensitivity for acute trauma fracture detection in the hand and wrist compared to conventional CT images alone and X-ray.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1297-1307"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146132855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acetabular cup anteversion measurement in total hip arthroplasty: reliability of metal artifact reduction MRI compared with CT.","authors":"Frederik Abel, Patrick O Zingg, Reto Sutter, Florian Schmaranzer","doi":"10.1007/s00256-026-05161-y","DOIUrl":"10.1007/s00256-026-05161-y","url":null,"abstract":"<p><strong>Objective: </strong>The acetabular cup version in patients with total hip arthroplasty (THA) is a key parameter influencing hip stability and functional outcomes. Although CT remains the reference standard for assessing cup orientation, MRI with metal artifact reduction techniques is increasingly used for evaluating postoperative pain. This study compared MRI- and CT-based measurements of acetabular cup version regarding agreement, reproducibility, and reliability.</p><p><strong>Material and methods: </strong>Patients who underwent THA between 2015 and 2025 with postoperative CT and MRI were retrospectively analyzed. MRI was performed using optimized metal artifact reduction sequences. Acetabular cup version was measured on axial high-bandwidth T1-weighted turbo spin-echo sequences and on corresponding CT scans by two musculoskeletal radiologists. Inter- and intra-reader, as well as inter-modality agreement, were assessed using intraclass correlation coefficients (ICC). Bland-Altman plots evaluated systematic bias.</p><p><strong>Results: </strong>Thirty patients were included (mean age, 64.1 years; 14 women). Mean acetabular version was 31.2° (standard deviation (SD), 9.4-10.3) for CT and 30.1-30.2° (SD, 8.9-9.3) for MRI for both readers. Inter-reader agreement was almost perfect for CT (ICC, 0.96) and substantial for MRI (ICC, 0.76). Intra-reader agreement was almost perfect for both modalities (ICC, CT, 0.99; MRI, 0.94). Bland-Altman analysis showed no statistically significant differences between CT and MRI measurements with a slight positive bias for MRI (mean pooled difference, 1.1°; p = 0.058; limits of agreement, -4.7 to 6.8°) and almost perfect agreement for both readers (ICC, 0.86-0.90).</p><p><strong>Conclusion: </strong>MRI measures acetabular cup version with excellent reliability and close agreement with CT, reinforcing MRI's role in postoperative THA evaluation.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1329-1336"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146166597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pulvinar signal abnormalities on MRI are associated with atraumatic hip pain.","authors":"Adrian A Marth, Brian Tangsombatvisit, Zehra Akkaya, Gabby B Joseph, Alan L Zhang, Richard B Souza, Thomas M Link","doi":"10.1007/s00256-026-05169-4","DOIUrl":"10.1007/s00256-026-05169-4","url":null,"abstract":"<p><strong>Objective: </strong>To investigate MRI abnormalities of the pulvinar and ligamentum teres (LT) in patients with atraumatic hip pain, as well as to describe a grading system for pulvinar signal abnormalities and test its reproducibility.</p><p><strong>Materials and methods: </strong>This retrospective study included 128 patients with atraumatic hip pain and no reported structural abnormalities other than those of the pulvinar and LT on hip MRI, along with 64 asymptomatic controls. MR images were evaluated by two readers and included grading of pulvinar signal abnormalities (normal, grade 1: < 50% fat replacement, grade 2: > 50% fat replacement), LT signal abnormality, LT thickening, and LT tear. Ordinal variables were dichotomized for further analysis. Group differences were analyzed using logistic regression models. Inter-reader agreement was assessed using kappa statistics.</p><p><strong>Results: </strong>Pulvinar signal abnormalities were significantly associated with a higher odds ratio (OR) of hip pain (OR, 4.28; 95% CI, 1.81-11.49; p = 0.002). No significant group differences were found for LT signal increase, LT thickening, or LT tear (p-value range = 0.43-0.71). Inter-reader and intra-reader agreement for pulvinar signal abnormalities grading were almost perfect (κ = 0.85 [95% CI, 0.76-0.93] and κ = 0.92 [95% CI, 0.64-1.00]).</p><p><strong>Conclusion: </strong>Patients with atraumatic hip pain undergoing MRI demonstrated a significantly higher prevalence of pulvinar signal abnormalities in the absence of other relevant structural pathology. These results underscore the importance of systematically evaluating the pulvinar during hip MRI interpretation. Furthermore, a grading system for pulvinar signal abnormalities was introduced.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1375-1383"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139251/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146228698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vertebral-level discrimination of incidental vertebral fractures using volumetric BMD, texture features, and finite element-derived fracture load: an exploratory study.","authors":"Daniel Strack, Michael Dieckmeyer, Nico Sollmann, Thomas Baum, Jan S Kirschke, Karupppasamy Subburaj","doi":"10.1007/s00256-026-05147-w","DOIUrl":"10.1007/s00256-026-05147-w","url":null,"abstract":"<p><strong>Objective: </strong>To assess the discriminatory ability of vertebra-specific volumetric bone mineral density (vBMD), finite element analysis-derived fracture load (FEA-derived FL), and texture analysis (TA) features for incidental vertebral fractures, and to compare performance between thoracic and lumbar levels.</p><p><strong>Materials and methods: </strong>We retrospectively reviewed baseline and follow-up thoracolumbar CT scans from 420 patients and identified 11 patients with incidental vertebral fractures contributing to 20 fractured vertebrae (7 females; mean age 65.5years). For each fractured vertebra, three level-matched control vertebrae from patients without fractures were selected, yielding 58 controls across 29 control patients (total 78 vertebrae). Parameters evaluated include vBMD, FEA-derived FL, and TA features (24 total). Discriminatory ability was assessed using area under the curve (AUC) values.</p><p><strong>Results: </strong>vBMD, FEA-derived FL, and 4 of 24 TA features showed group-wise differences between fractured and control vertebrae groups. AUCs were 0.76 [95% CI 0.55-0.90] (vBMD) and 0.73 [95% CI 0.52-0.90] (FEA-derived FL); selected texture features ranged 0.70-0.72. Region-stratified AUC point estimates were higher in the lumbar than in the thoracic vertebrae, but the 95% CIs were wide/overlapping; comparisons are descriptive.</p><p><strong>Conclusion: </strong>vBMD had the numerically largest AUC point estimate for discriminating fractured from control vertebrae; FEA-derived FL was similar, and selected texture features showed modest discrimination with comparable point estimates across lumbar and thoracic levels, generating the hypothesis of less region dependence. Regional comparisons are descriptive. Findings are exploratory and intended to prioritize candidate measures for validation and future multivariable modeling before any clinical application.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1351-1363"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139215/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146202483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fracture of a temporary PROSTALAC knee spacer leading to mechanical symptoms after prolonged use.","authors":"Young Ju Song","doi":"10.1007/s00256-026-05173-8","DOIUrl":"10.1007/s00256-026-05173-8","url":null,"abstract":"<p><p>A 81-year-old woman with chronic periprosthetic knee infection underwent implantation of a temporary articulating PROSTALAC spacer following prosthesis removal. Over the ensuing 3 months, she developed worsening mechanical symptoms including instability, clicking, and difficulty bearing weight. Radiographs and MRI demonstrated a transverse fracture through the femoral component of the spacer with cement fragmentation and malalignment. Revision surgery with replacement of the fractured spacer led to resolution of symptoms and improved postoperative function. This case highlights the limited structural durability of polymethylmethacrylate (PMMA)-based articulating spacers during prolonged implantation and emphasizes the importance of imaging evaluation when new mechanical symptoms arise.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1425-1428"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146221372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A 45-year-old man with low back pain.","authors":"Leonor Garbin Savarese, Mateus de Andrade Hernandes, Daniel Olivatto Zanutto, Joel Del Bel Pádua, Marcello Henrique Nogueira-Barbosa","doi":"10.1007/s00256-026-05164-9","DOIUrl":"10.1007/s00256-026-05164-9","url":null,"abstract":"","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1401-1402"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146182238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Femoral neck-parallel reconstruction enhances correlation between CT-based measurements and dual-energy X-ray absorptiometry for osteoporosis assessment.","authors":"Kentaro Funashima, Hiroaki Kurishima, Yasutake Tomata, Naoko Mori, Yu Mori","doi":"10.1007/s00256-026-05157-8","DOIUrl":"10.1007/s00256-026-05157-8","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate whether femoral neck-parallel reconstruction of CT images improves the correlation with dual-energy X-ray absorptiometry for osteoporosis assessment compared with conventional table-parallel reconstruction.</p><p><strong>Materials and methods: </strong>A retrospective analysis was conducted on 174 patients who underwent hip CT and dual-energy X-ray absorptiometry. Two CT image reconstruction methods were compared: femoral neck-parallel and table-parallel methods. CT values were extracted from cancellous bone regions in the femoral neck corresponding to the area measured by DXA. Correlation coefficients between CT values and dual-energy X-ray absorptiometry-derived bone mineral density and T-scores were calculated. A stratified analysis by femoral neck-to-table angle (< 5° vs. ≥ 5°) was performed. Receiver operating characteristic (ROC) curve analysis was performed to compare the ability of each method to discriminate between patients with and without low bone mass (defined as osteoporosis or osteopenia).</p><p><strong>Results: </strong>CT values from the femoral neck-parallel method showed significantly stronger correlations with bone mineral density (r = 0.74) and T-score (r = 0.77) than those from the table-parallel method (bone mineral density: r = 0.66, T-score: r = 0.71) (p = 0.001 for both). In patients with ≥ 5° misalignment, the femoral neck-parallel method showed significantly higher correlation coefficients than the table-parallel method (bone mineral density, p < 0.001; T-score, p = 0.005). ROC curve analysis revealed that the area under the curve for detecting low bone mass was higher in the femoral neck-parallel method (0.87) than in the table-parallel method (0.83) (p = 0.012).</p><p><strong>Conclusions: </strong>Femoral neck-parallel reconstruction significantly improves the correlation between CT values and dual-energy X-ray absorptiometry for low bone mass assessment compared to table-parallel reconstruction.</p>","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1269-1276"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146166579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interpreting the emerging role of quantitative perfusion assessment after closed reduction in developmental dysplasia of the hip.","authors":"Takeshi Fukuda","doi":"10.1007/s00256-026-05190-7","DOIUrl":"10.1007/s00256-026-05190-7","url":null,"abstract":"","PeriodicalId":21783,"journal":{"name":"Skeletal Radiology","volume":" ","pages":"1347-1349"},"PeriodicalIF":2.2,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147435310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}