Article
Medicine, General & Internal
Daniele Conti, Fabio Baruffaldi, Paolo Erani, Anna Festa, Stefano Durante, Miriam Santoro
Summary: Metal components of hip prostheses cause severe artifacts in CT images, influencing diagnostic accuracy. Metal artifact reduction (MAR) software and virtual monoenergetic reconstructions on dual-energy CT (DECT) systems are possible solutions that should be considered. The severity of artifacts was quantified using a customized adjustable phantom, and the impact of different tools on artifact severity was evaluated for different prosthetic configurations.
Article
Biology
Noriko Ishii-Kitano, Hirayuki Enomoto, Takashi Nishimura, Nobuhiro Aizawa, Yoko Shibata, Akiko Higashiura, Tomoyuki Takashima, Naoto Ikeda, Yukihisa Yuri, Aoi Fujiwara, Kohei Yoshihara, Ryota Yoshioka, Shoki Kawata, Shogo Ota, Ryota Nakano, Hideyuki Shiomi, Seiichi Hirota, Tsutomu Kumabe, Osamu Nakashima, Hiroko Iijima
Summary: We report a case of multiple inflammatory pseudotumors (IPTs) of the liver that spontaneously regressed. Physicians should avoid a hasty diagnosis of multiple tumors based solely on clinical findings and conduct a careful assessment with various imaging modalities.
Article
Biology
Valerie Dahm, Ursula Schwarz-Nemec, Alice B. Auinger, Michael A. Arnoldner, Alexandra Kaider, Dominik Riss, Christian Czerny, Christoph Arnoldner
Summary: This study aimed to compare cone beam computed tomography and computed tomography in visualizing stapes prostheses, revealing important radiologic features and clinical implications of stapes prostheses.
Article
Radiology, Nuclear Medicine & Medical Imaging
Reina Hosoi, Koichiro Yasaka, Masumi Mizuki, Haruomi Yamaguchi, Rintaro Miyo, Akiyoshi Hamada, Osamu Abe
Summary: The purpose of this study was to evaluate the impact of deep learning reconstruction (DLR) with single-energy metal artifact reduction (SEMAR) (DLR-S) technique in pelvic helical computed tomography (CT) images for patients with metal hip prostheses, and compare it with DLR and hybrid iterative reconstruction (IR) with SEMAR (IR-S). The study concluded that DLR-S provided better image quality and reduced metal artifacts compared to DLR and IR-S.
JAPANESE JOURNAL OF RADIOLOGY
(2023)
Article
Medicine, General & Internal
Chang-Jin Yon, Kyung-Jae Lee, Byung-Chan Choi, Ho-Sung Suh, Byung-Woo Min
Summary: This study aimed to validate the measurements of host bone coverage based on intra-operative measurements, as well as two-dimensional and three-dimensional assessments. It also aimed to determine the minimum host bone coverage required for stable cup fixation after total hip arthroplasty in patients with hip dysplasia. The results showed a strong positive correlation between intra-operative host bone coverage and three-dimensional measurements based on CT reconstruction.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Oncology
Fang-Ling Zhang, Ruo-Cheng Li, Xiao-Ling Zhang, Zhao-Hui Zhang, Ling Ma, Lei Ding
Summary: The study found that using the SEMAR algorithm can reduce metal artifacts in knee tumor prostheses, and increase diagnostic confidence for prosthetic complications and tumor recurrence.
Article
Orthopedics
Paul Kolbitsch, Iris-Melanie Noebauer-Huhmann, Alexander Giurea, Bernd Kubista, Reinhard Windhager, Richard Lass
Summary: This study compared metal ion levels, pseudotumors, clinical, and radiological results in small-head MOM hips over a follow-up period of more than 20 years. The study found good long-term clinical and functional outcomes in patients, with no significant increase in serum metal levels in patients with pseudotumors.
JOURNAL OF ARTHROPLASTY
(2021)
Article
Engineering, Manufacturing
Xin Zhou, Ning Dai, Xiaosheng Cheng, Adam Thompson, Richard Leach
Summary: A method for particle morphology characterization using X-ray computed tomography (XCT) was explored in this study. Results showed that 3D XCT measurements closely matched SEM results and cluster analysis provided a comprehensive evaluation method for metal powders. The study demonstrated that 3D morphology measurement provides a better understanding of powder particles compared to 2D methods.
ADDITIVE MANUFACTURING
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Sevtap Tugce Ulas, Katharina Ziegeler, Sophia-Theresa Richter, Sarah Ohrndorf, Robert Biesen, Fabian Proft, Denis Poddubnyy, Torsten Diekhoff
Summary: This study compared the performance of dual-energy CT and CT subtraction in detecting arthritis, with CT-S having the highest diagnostic accuracy. Both iMap and MRI showed good correlation and interreader reliability. Musculoskeletal ultrasound remains the most available modality for arthritis imaging and served as the gold standard in this study.
EUROPEAN RADIOLOGY
(2022)
Article
Orthopedics
Olof Sandberg, Sofia Carlsson, Ellen Harbom, Vendela Cappelen, Simon Tholen, Henrik Olivecrona, Per Wretenberg
Summary: This study demonstrates the accuracy and feasibility of using inducible displacement CT in diagnosing aseptic loosening in total hip arthroplasty. The sensitivity and specificity of displacement CT were found to be higher than plain radiography, making it a valuable tool for clinical routine.
Article
Economics
Ying Liang Low, Eric Finkelstein
Summary: The study demonstrates that DECT supplementing SECT is a cost-effective imaging strategy for diagnosing occult hip fractures among older adults in Singapore. Compared to MRI, DECT supplementing SECT provides more QALYs and appears to be a cost-effective option at a willingness-to-pay threshold.
Article
Orthopedics
Chieh-An Chuang, Huan Sheu, Cheng-Pang Yang, Hao-Che Tang, Chen-Te Wu, Chen-Ju Fu, Yi-Sheng Chan
Summary: Based on the comparison with hip arthroscopic surgery findings, the study found that the combination of 3D-CT and multidirectional CTA showed high diagnostic accuracy for femoroacetabular impingement (FAI) and related hip lesions. The sensitivity, specificity, and accuracy of 3D-CT for FAI were 91.58%, 57.14%, and 89.47% respectively. The sensitivity, specificity, and accuracy of CTA for labral tears were 94.64%, 100.00%, and 94.73% respectively. For acetabular cartilage defects, the sensitivity, specificity, and accuracy of CTA were 60.71%, 91.37%, and 76.31% respectively. For femoral cartilage defects, the sensitivity, specificity, and accuracy of CTA were 82.22%, 76.81%, and 78.94% respectively.
ORTHOPAEDIC JOURNAL OF SPORTS MEDICINE
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Lieve Morbee, Min Chen, Thomas Van den Berghe, Eva Schiettecatte, Robert Gosselin, Nele Herregods, Lennart B. O. Jans
Summary: This study aimed to test the equivalency of MRI-based synthetic CT to conventional CT in quantitatively assessing bony morphology of the hip. The results showed a high degree of concordance between synthetic CT and CT in evaluating bone morphology, indicating that synthetic CT can replace pelvic CT examination to avoid radiation exposure.
EUROPEAN RADIOLOGY
(2022)
Review
Environmental Sciences
Hessamaddin Sohrabi, Siamak Javanbakht, Fatemeh Oroojalian, Farzaneh Rouhani, Ahmad Shaabani, Mir Reza Majidi, Mahmoud Hashemzaei, Younes Hanifehpour, Ahad Mokhtarzadeh, Ali Morsali
Summary: Porous Metal-Organic Frameworks (MOFs) have been widely utilized in various fields of chemistry, particularly in bioimaging platforms. The key to their optimal performance lies in the core structure, synthesis method, and modification processes. Advanced MOFs have shown promise for future applications in modifying and synthesizing MOFs.
Article
Cardiac & Cardiovascular Systems
Miho Fukui, Vinayak N. Bapat, Santiago Garcia, Marshall W. Dworak, Go Hashimoto, Hirotomo Sato, Mario Gossl, Maurice Enriquez-Sarano, John R. Lesser, Joao L. Cavalcante, Paul Sorajja
Summary: This study found that frame deformation, asymmetric leaflet, and smaller neosinus volume are associated with the occurrence of HALT in patients undergoing TAVR. The presence of HALT is associated with an increased risk of mortality within 1 year.
Article
Health Care Sciences & Services
Shiraz A. Sabah, Abtin Alvand, David J. Beard, Andrew J. Price
Summary: This study estimated the clinically meaningful changes and differences for the Oxford Hip and Knee Scores (OHS/OKS) using distribution and anchor-based methods. The estimates can be used for sample size calculations and interpreting changes in joint function and differences between groups.
JOURNAL OF CLINICAL EPIDEMIOLOGY
(2022)
Article
Orthopedics
Harry Hothi, Johann Henckel, Sean Bergiers, Anna Di Laura, Klaus Schlueter-Brust, Alister Hart
Summary: This study aims to investigate the presence of voids in commercially available custom acetabular cups. The research found that some cups indeed have structural voids, which may increase the risk of crack initiation in the cups.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Article
Orthopedics
Martina Tognini, Harry Hothi, Sean Bergiers, Edel Broomfield, Stewart Tucker, Johann Henckel, Alister Hart
Summary: Retrospective analysis of explanted magnetically controlled growing rods (MCGRs) aimed to understand their fracture mechanisms and related risk factors. Findings showed that all fractured rods were single-rod constructs and greater rod contouring angles and distances between anchoring points were significant factors contributing to the fractures. Therefore, implanting double rod constructs in patients with mature spines is preferable to avoid this complication.
JOURNAL OF PEDIATRIC ORTHOPAEDICS
(2023)
Article
Biotechnology & Applied Microbiology
Sean Bergiers, Johann Henckel, Harry Hothi, Anna Di Laura, Chris Goddard, David Raymont, Furqan Ullah, Ross Cotton, Rebecca Bryan, Alister Hart
Summary: This study aimed to identify the most common locations of wear in vivo by using CT imaging, retrieval analysis, and statistical shape modelling (SSM). The results showed that wear volume, positioning, time, gender, and size had an impact on the location of wear. Understanding the function of hip implants can inform future design and improve the safe zone for implant positioning.
BIOENGINEERING-BASEL
(2023)
Article
Orthopedics
Martin A. Belzunce, Johann Henckel, Anna Di Laura, Laura M. Horga, Alister James Hart
Summary: Physical activity and a healthy lifestyle are important for delaying sarcopenia. This study aimed to quantify the benefits of cycling on muscle health in middle-aged men. The results showed that cyclists had lower levels of intramuscular fat infiltration and larger muscle mass compared to physically inactive individuals.
BMC MUSCULOSKELETAL DISORDERS
(2023)
Article
Orthopedics
Sara De Angelis, Johann Henckel, Sean Bergiers, Harry Hothi, Anna Di Laura, Alister Hart
Summary: The assessment of three-dimensional bony defects is important for surgical planning of hip reconstruction. Previous methods using mirroring of the contralateral side may not be useful when diseased or replaced. Statistical Shape Models (SSMs) can aid reconstruction by deriving landmarks for patients with large acetabular defects. Our study found that SSMs can effectively reconstruct bony landmarks in patients with significant lysis, regardless of defect severity. This can assist in surgical planning and implant design for hip reconstruction.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Article
Engineering, Biomedical
Maria Moralidou, Anna Di Laura, Johann Henckel, Alister J. Hart
Summary: Three-Dimensional Computed Tomography planning can predict prosthetic femoral size in un-cemented primary Total Hip Arthroplasty. However, the relationship between Prosthetic Femoral Version and Native Femoral Version is not well understood. This study aimed to assess this relationship using 3D-CT analysis.
MEDICAL ENGINEERING & PHYSICS
(2023)
Article
Orthopedics
T. Wilton, J. A. Skinner, F. S. Haddad
Summary: Recent publications have highlighted the possibility of significant performance variations among different brands of joint replacement. The National Joint Registry has conducted a detailed analysis on larger families of knee arthroplasties, with the aim of identifying any hidden differences. Analysis of the Nexgen knee arthroplasty brand revealed particularly high revision rates for aseptic loosening of the tibia in certain posterior-stabilized combinations, leading to a recall of the Nexgen 'option' tibial component. More sophisticated signal detection methods are needed to identify such variations in outcomes between closely related implant types in order to protect patients.
BONE & JOINT JOURNAL
(2023)
Article
Critical Care Medicine
Matthew J. Wood, Talal Al-Jabri, Ahmed Zaghloul, Brent Lanting, Peter V. Giannoudis, Alister James Hart
Summary: Periprosthetic acetabular fractures are rare but potentially serious complications of total hip arthroplasty. There is a lack of literature on these fractures compared to periprosthetic femoral fractures after total hip arthroplasty. This article provides an up-to-date review of the epidemiology, risk factors, diagnostic challenges, classifications, and management strategies for periprosthetic acetabular fractures after total hip arthroplasty.
INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED
(2023)
Review
Orthopedics
C. Morgan, L. Li, P. R. Kasetti, R. Varma, A. D. Liddle
Summary: This review examined common themes and data surrounding pregnancy, parenthood, and fertility within orthopaedics. It found that female orthopaedic surgeons have higher rates of obstetric complications and infertility, and negative perceptions surrounding pregnancy can lead to delayed childbearing.
BONE & JOINT JOURNAL
(2023)
Article
Cell & Tissue Engineering
C. J. Harrison, C. Y. Plessen, G. Liegl, J. N. Rodrigues, S. A. Sabah, D. J. Beard, F. Fischer
Summary: The aim of this study was to map the OKS and HAAS items to a common scale and investigate the psychometric properties of this scale for measuring knee health. The findings showed that using the common scale provided more precise measurement compared to using OKS or HAAS alone.
BONE & JOINT RESEARCH
(2023)
Review
Medicine, General & Internal
Shiraz A. Sabah, Elizabeth A. Hedge, Lennart von Fritsch, Joshua Xu, Raja Bhaskara Rajasekaran, Thomas W. Hamilton, Alexander D. Shearman, Abtin Alvand, David J. Beard, Sally Hopewell, Andrew J. Price
Summary: This systematic review aimed to summarize the evidence for the effectiveness of revision knee arthroplasty (rKA) compared to non-operative treatment for patients with failed knee arthroplasty. The results showed that implant survivorship after rKA was high, ranging from 83.2% at 15 years to 95.5% at 1 year. However, post-operative complications were common.
SYSTEMATIC REVIEWS
(2023)
Article
Orthopedics
Angelika Ramesh, Anna Di Laura, Johann Henckel, Alister Hart
Summary: CT is commonly used for pre-operative planning and assessment of THA, but there is a need for a harmonised low-dose protocol due to the variability in existing protocols. Most protocols are incomplete and only a small percentage are optimised for both field of view and image acquisition parameters. The variability emphasizes the need for a more consistent and optimal protocol for THA planning.
EFORT OPEN REVIEWS
(2023)
Article
Biotechnology & Applied Microbiology
M. Abdulhadi Alagha, Kartik Logishetty, Ciaran O'Hanlon, Alexander D. Liddle, Justin Cobb
Summary: Three-dimensional planning of hip arthroplasty using the 3D Hip Planner software can improve visualization of anatomical landmarks, enhance preoperative implant sizing, and lead to a decrease in surgical time and complications. The study found that the software is valid and reliable, with significant potential in optimizing the quality and accuracy of surgical planning for hip resurfacing arthroplasty.
BIOENGINEERING-BASEL
(2023)
Review
Orthopedics
Jonas P. P. Sina, Shiraz A. A. Sabah, Daniel Schrednitzki, Andrew J. J. Price, Thomas W. W. Hamilton, Abtin Alvand
Summary: This scoping review summarizes the types, indications, and early complication rates of static spacers used to treat prosthetic joint infection after knee replacement surgery.
ARCHIVES OF ORTHOPAEDIC AND TRAUMA SURGERY
(2023)