Results 41 to 50 of about 106,955 (321)

Automated volumetric and statistical shape assessment of cam-type morphology of the femoral head-neck region from 3D magnetic resonance images [PDF]

arXiv, 2021
Femoroacetabular impingement (FAI) cam morphology is routinely assessed using two-dimensional alpha angles which do not provide specific data on cam size characteristics. The purpose of this study is to implement a novel, automated three-dimensional (3D) pipeline, CamMorph, for segmentation and measurement of cam volume, surface area and height from ...
arxiv  

A novel model of traumatic femoral head necrosis in rats developed by microsurgical technique

BMC Musculoskeletal Disorders, 2022
Background Clinical angiography and vascular microperfusion confirmed that the femoral head retains blood supply after a collum femur fracture. However, no animal model accurately mimics this clinical situation.
Yongxiang Lv, Xing Qiu, Gang Liu, Yunqing Wang, Yazhong Zhang, Wenbo Li, Ziqiang Zhu   +6 more
doaj   +1 more source

Expanding the clinical spectrum associated with the PACS1 p.Arg203Trp mutational hot‐spot: Two additional Italian patients

, 2023
American Journal of Medical Genetics Part A, Volume 191, Issue 1, Page 284-288, January 2023.
Lucia Pia Bruno, Gabriella Doddato, Margherita Baldassarri, Caterina Lo Rizzo, Sara Resciniti, Mirella Bruttini, Lista Mirjam, Kristina Zguro, Simone Furini, Maria Antonietta Mencarelli, Alessandra Renieri, Francesca Ariani   +11 more
wiley   +1 more source

Case report: Directional infusion of peripheral blood stem cells into the necrotic zone in femoral heads through the medial circumflex femoral artery: A tracing study

Frontiers in Medicine, 2022
ObjectiveThis study aimed to explore whether peripheral blood stem cells (PBSCs) infused through the medial circumflex femoral artery to treat osteonecrosis of the femoral head (ONFH) could migrate into the necrotic area of femoral head.MethodsWe ...
Qiang Mao, Weijie Shao, Shuaijie Lv, Peijian Tong, Bangjian He   +4 more
doaj   +1 more source

Percolative Mechanism of Aging in Zirconia-Containing Ceramics for Medical Applications [PDF]

Advanced Materials, Volume 15, Issue 6, March, 2003, Pages 507-511, 2018
Recently, several episodes of fracture of zirconia ceramic femoral heads of total hip prostheses have alarmed the medical and scientific community regarding aging problems in zirconia prostheses. Such fractures cause immediate local tissue reactions, which require urgent medical intervention to prevent further complications.
arxiv   +1 more source

From 2D to 3D gamma passing rate tolerance and action limits for patient‐specific quality assurance in volumetric‐modulated arc therapy

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Volumetric modulated arc therapy (VMAT) requires an accurate patient‐specific quality assurance (PSQA) program. In clinical practice, this is usually performed using the γ‐index and the two‐dimensional gamma passing rate (2D %GP). A three‐dimensional (3D) index incorporating the patient anatomy could be more useful for the 3D dose ...
Christos Zarros, George Patatoukas, Nikos Kollaros, Marina Chalkia, Andromachi Kougioumtzopoulou, Vasilios Kouloulias, Kalliopi Platoni   +6 more
wiley   +1 more source

Cost Comparison of Femoral Head Banking versus Bone Substitutes

Journal of Orthopaedic Surgery, 2010
Purpose. To compare the costs of femoral head banking versus bone substitutes. Methods. Records of femoral head banking from 1998 to 2008 were reviewed.
Hon-Bong Leung, Margaret Woon-Man Fok, Lorraine Chi-Yan Chow, Chi-Hung Yen   +3 more
doaj   +1 more source

Apoptosis in the Osteonecrosis of the Femoral Head

Clinics in Orthopedic Surgery, 2010
Osteonecrosis of the femoral head is classified into idiopathic and secondary forms. A number of etiological factors in the development of osteonecrosis have been suggested but the biological mechanisms are still unclear. Recently, some reports suggested that the apoptosis is closely related to osteonecrosis of the femoral head.
Soo Ho Lee, Soo-Youn Lee, Yoon-Seok Youm
openaire   +2 more sources

Geometric and dosimetric evaluation of a commercial AI auto‐contouring tool on multiple anatomical sites in CT scans

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Current radiotherapy practices rely on manual contouring of CT scans, which is time‐consuming, prone to variability, and requires highly trained experts. There is a need for more efficient and consistent contouring methods. This study evaluated the performance of the Varian Ethos AI auto‐contouring tool to assess its potential integration into
Robert N. Finnegan, Alexandra Quinn, Patrick Horsley, Joseph Chan, Maegan Stewart, Regina Bromley, Jeremy Booth   +6 more
wiley   +1 more source

Research progress in the pathogenesis of hormone-induced femoral head necrosis based on microvessels: a systematic review

Journal of Orthopaedic Surgery and Research
Hormonal necrosis of the femoral head is caused by long-term use of glucocorticoids and other causes of abnormal bone metabolism, lipid metabolism imbalance and blood microcirculation disorders in the femoral head, resulting in bone trabecular fracture ...
Tiancheng Ma, Yan Wang, Jianxiong Ma, Hongwei Cui, Xiaotian Feng, Xinlong Ma   +5 more
doaj   +1 more source