keyword
https://read.qxmd.com/read/38458001/leaf-spring-exercise-a-safe-quadriceps-strengthening-exercise-after-anterior-cruciate-ligament-reconstruction
#21
JOURNAL ARTICLE
Maki Koyanagi, Takayuki Matsuo, Naruhiko Nakae, Ryo Okimoto, Shota Nobekawa, Hideki Tsukuda, Issei Ogasawara, Konsei Shino
BACKGROUND: Leg extensions should be avoided in the early stages after anterior cruciate ligament reconstruction because the force exerted by the quadriceps muscle leads to anterior tibial displacement. To allow for safe quadriceps training in the knee extension range during this period, we devised the leaf spring exercise, which involves placing subjects in the prone position with their knee slightly flexed and instructing them to perform maximum isometric quadriceps contractions while supporting the proximal region of the lower leg's anterior surface and immobilizing the femur's posterior surface to prevent lifting...
February 21, 2024: Clinical Biomechanics
https://read.qxmd.com/read/38457105/what-we-do-not-know-about-stretching-in-healthy-athletes-a-scoping-review-with-evidence-gap-map-from-300-trials
#22
José Afonso, Renato Andrade, Sílvia Rocha-Rodrigues, Fábio Yuzo Nakamura, Hugo Sarmento, Sandro R Freitas, Ana Filipa Silva, Lorenzo Laporta, Maryam Abarghoueinejad, Zeki Akyildiz, Rongzhi Chen, Andreia Pizarro, Rodrigo Ramirez-Campillo, Filipe Manuel Clemente
BACKGROUND: Stretching has garnered significant attention in sports sciences, resulting in numerous studies. However, there is no comprehensive overview on investigation of stretching in healthy athletes. OBJECTIVES: To perform a systematic scoping review with an evidence gap map of stretching studies in healthy athletes, identify current gaps in the literature, and provide stakeholders with priorities for future research. METHODS: Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 and PRISMA-ScR guidelines were followed...
March 8, 2024: Sports Medicine
https://read.qxmd.com/read/38456966/biochemical-and-biomechanical-characterization-of-an-autologous-protein-based-fibrin-sealant-for-regenerative-medicine
#23
JOURNAL ARTICLE
Eduardo Anitua, Ander Pino, Roberto Prado, Francisco Muruzabal, Mohammad Hamdan Alkhraisat
Accidental events or surgical procedures usually lead to tissue injury. Fibrin sealants have proven to optimize the healing process but have some drawbacks due to their allogeneic nature. Autologous fibrin sealants present several advantages. The aim of this study is to evaluate the performance of a new autologous fibrin sealant based on Endoret®PRGF® technology (E-sealant). One of the most widely used commercial fibrin sealants (Tisseel®) was included as comparative Control. E-sealant´s hematological and biological properties were characterized...
March 8, 2024: Journal of Materials Science. Materials in Medicine
https://read.qxmd.com/read/38455456/repair-of-chronic-and-large-rotator-cuff-tears-using-extra-synovial-autografts-an-experimental-study-in-rabbits
#24
JOURNAL ARTICLE
Iosafat Pinto, Lazaros Kostretzis, Konstantinos Katakalos, George Kazakos, Angeliki Cheva, Athanasios Chatzisotiriou, Pericles Papadopoulos, Konstantinos Ditsios
PURPOSE: To investigate whether and how extra-synovial autografts can enhance the reconstruction of chronic and large rotator cuff tears in a rabbit subscapularis model. METHODS: Twenty rabbits were used to create a large subscapularis tear bilaterally. Six weeks later, the right shoulder of each rabbit was operated to repair the tear with an extra-synovial autograft, whereas the left shoulder did not undergo any surgery. At 6 and 12 weeks after the second procedure, the specimens underwent biomechanical and histological evaluation...
January 2024: Journal of Experimental Orthopaedics
https://read.qxmd.com/read/38454966/3d-printing-sequentially-strengthening-high-strength-natural-polymer-hydrogel-bilayer-scaffold-for-cornea-regeneration
#25
JOURNAL ARTICLE
Xiongfeng Nie, Yong Tang, Tengling Wu, Xinrui Zhao, Ziyang Xu, Rong Yang, Yage Sun, Bin Wu, Quanhong Han, Jingwen Hui, Wenguang Liu
3D printing of high-strength natural polymer biodegradable hydrogel scaffolds simultaneously resembling the biomechanics of corneal tissue and facilitating tissue regeneration remains a huge challenge due to the inherent brittleness of natural polymer hydrogels and the demanding requirements of printing. Herein, concentrated aqueous solutions of gelatin and carbohydrazide-modified alginate (Gel/Alg-CDH) are blended to form a natural polymer hydrogel ink, where the hydrazides in Alg-CDH are found to form strong hydrogen bonds with the gelatin...
2024: Regenerative Biomaterials
https://read.qxmd.com/read/38454432/analysis-of-three-different-reverse-shoulder-arthroplasty-designs-for-cuff-tear-arthropathy-the-combination-of-lateralization-and-distalization-provides-best-mobility
#26
JOURNAL ARTICLE
Florian Freislederer, Philipp Moroder, Laurent Audigé, Tim Schneller, Yacine Ameziane, Raphael Trefzer, Jan-Philipp Imiolczyk, Markus Scheibel
BACKGROUND: The two major reverse shoulder arthroplasty (RSA) designs are the Grammont design and the lateralized design. Even if the lateralized design is biomechanically favored, the classic Grammont prosthesis continues to be used. Functional and subjective patient scores as well as implant survival described in the literature so far are comparable to the lateralized design. A pure comparison of how the RSA design influences outcome in patients has not yet been determined. The aim of this study was a comparison focused on patients with cuff tear arthropathy (CTA)...
March 7, 2024: BMC Musculoskeletal Disorders
https://read.qxmd.com/read/38452389/how-can-research-on-modern-and-fossil-bones-help-us-build-more-resistant-columns
#27
JOURNAL ARTICLE
Alexandra Houssaye, Cyril Etienne, Yvon Gallic, Flavien Rocchia, Julien Chaves-Jacob
Bone is an economical material. Indeed, as moving a heavy skeleton is energetically costly, the vertebrate skeleton is adapted to maximise resistance to the stresses imposed with a minimum amount of material, so that bone tissue is deposited where it is needed. Using bone as a source of inspiration should therefore reduce the manufacturing cost (both financial and ecological) and increase the strength (and lifespan) of bioinspired structures. This study proposes to investigate which adaptive features of the outer shape and inner structure of bone, related to compressive strength, could be used to build bioinspired support structures...
March 7, 2024: Bioinspiration & Biomimetics
https://read.qxmd.com/read/38450945/an-epidemiological-qualitative-quantitative-swot-ahp-analysis-in-order-to-highlight-the-positive-or-critical-aspects-of-dental-implants-a-pilot-study
#28
JOURNAL ARTICLE
Silvana Mirella Aliberti, Richard H W Funk, Marco De Stefano, Thomas Hoffmann, Mario Capunzo
OBJECTIVES: In recent years, dental implants are increasing in popularity due to their high success rate, demonstrated functionality, and aesthetic treatment results. Scientific research is very active in proposing improvements in the quality and survival of implants, taking into consideration various aspects. The objective of this study was to provide a holistic epidemiologic view of the state of dental implants, using a systematic approach based on a multimethod SWOT (Strengths, Weaknesses, Opportunities, and Threats) analysis and AHP (analytical hierarchical process) qualitative-quantitative analysis to identify the characteristics that can determine their success or failure...
April 2024: Clinical and Experimental Dental Research
https://read.qxmd.com/read/38445482/computational-mutagenesis-of-antibody-fragments-disentangling-side-chains-from-%C3%AE-%C3%AE-g-predictions
#29
JOURNAL ARTICLE
Rika Tandiana, German P Barletta, Miguel Angel Soler, Sara Fortuna, Walter Rocchia
The development of highly potent antibodies and antibody fragments as binding agents holds significant implications in fields such as biosensing and biotherapeutics. Their binding strength is intricately linked to the arrangement and composition of residues at the binding interface. Computational techniques offer a robust means to predict the three-dimensional structure of these complexes and to assess the affinity changes resulting from mutations. Given the interdependence of structure and affinity prediction, our objective here is to disentangle their roles...
March 6, 2024: Journal of Chemical Theory and Computation
https://read.qxmd.com/read/38440023/revitalizing-recovery-unveiling-the-transformative-impact-of-physiotherapy-in-rehabilitating-a-neglected-case-of-shoulder-hemiarthroplasty
#30
Om C Wadhokar, Minal Dahiwadkar, Sakshi Rawal, Reetkaur Arora, Aakanksha Choudhari, Aishwarya Mali, Chaitanya A Kulkarni, Tushar J Palekar, Mayur Wanjari
The shoulder joint has a complex anatomy and biomechanics. It is a ball and socket joint made by the articulation surface of the humeral head (ball) and glenoidal fossa (socket) of the scapula. Shoulder arthroplasty is done when parts of the shoulder joint are severely affected and damaged beyond repair. The damaged parts are replaced with artificial parts. Prosthetic implants are typically made of metal or plastic material. Implants come in various sizes and shapes. There are three types of surgical arthroplasty: total shoulder arthroplasty, partial shoulder arthroplasty, and reverse arthroplasty...
February 2024: Curēus
https://read.qxmd.com/read/38438142/design-and-biomechanical-finite-element-analysis-of-spatial-weaving-infracalcaneal-fixator-system
#31
JOURNAL ARTICLE
Yong Zhang, Qiuyan Weng, Jianming Chen, Yunfeng Yang
OBJECTIVE: Traditional internal fixation of calcaneus fractures, involving lateral L-shaped incisions and plate fixation, has disadvantages such as increased operative exposure, eccentric plate fixation, and complications. The aim of this study was to design a Spatial Weaving Intra-calcaneal Fixator System (SWIFS) for the treatment of complex calcaneal fractures and to compare its biomechanical properties with those of traditional calcaneal plates. METHODS: The computed tomography (CT) data of the normal adult calcaneus was used for modeling, and the largest trapezoidal column structure was cut and separated from the model and related parameters were measured...
March 4, 2024: Orthopaedic Surgery
https://read.qxmd.com/read/38436799/comparative-effects-of-including-inorganic-organic-and-hydroxy-zinc-sources-on-growth-development-egg-quality-mineral-excretion-and-bone-health-of-laying-quails
#32
JOURNAL ARTICLE
Osman Olgun, Esra Tuğçe Gül, Gözde Kılınç, Fatih Gökmen, Alpönder Yıldız, Veli Uygur, Ainhoa Sarmiento-García
The purpose of this study was to determine the effects of the dietary addition of zinc (Zn) in the form of sulphate (Zn-S), glycine (Zn-G), and hydroxychloride (Zn-H) on quail performance, eggshell quality, antioxidant status, mineral excretion, biomechanical properties and mineralization of bone. A total of 75 female quails (10-weeks-old) were randomly distributed into 3 groups with 5 replications, each with 5 female quails. Treatment groups were set up by adding Zn-S and Zn-H as the inorganic form and Zn-G as the organic form of zinc to the corn-soybean basal diet (34...
March 4, 2024: Biological Trace Element Research
https://read.qxmd.com/read/38436033/effect-of-lag-screw-on-stability-of-first-metatarsophalangeal-joint-arthrodesis-with-medial-plate
#33
JOURNAL ARTICLE
Karol Daszkiewicz, Magdalena Rucka, Krzysztof Czuraj, Angela Andrzejewska, Piotr Łuczkiewicz
BACKGROUND: First metatarsophalangeal joint (MTP-1) arthrodesis is a commonly performed procedure in the treatment of disorders of the great toe. Since the incidence of revision after MTP-1 joint arthrodesis is not insignificant, a medial approach with a medially positioned locking plate has been proposed as a new technique. The aim of the study was to investigate the effect of the application of a lag screw on the stability and strength of first metatarsophalangeal joint arthrodesis with medial plate...
2024: PeerJ
https://read.qxmd.com/read/38435259/anterior-cruciate-ligament-allograft-reconstruction-augmented-with-a-reinforced-bioinductive-collagen-scaffold-in-the-setting-of-multiligamentous-knee-injury
#34
JOURNAL ARTICLE
Andrew S Bi, Andrew J Hughes, Ian Savage-Elliott, Dylan Lowe, Robert J Meislin
The gold standard for surgical treatment of anterior cruciate ligament (ACL) injuries is reconstruction. There are a variety of graft options, from autograft to allograft, using bone-patellar tendon-bone (BTB), hamstrings, quadriceps, or Achilles, and, in the case of a multiligamentous knee injury (MLKI), allograft may be preferred to decrease operative time and graft harvest morbidity. The BioBrace (ConMed, New Haven, CT) is a bioinductive collagen scaffold designed to provide an environment for soft tissue remodeling with time zero biomechanical support and can be used to augment graft reconstructions in the case of concerns for allograft strength, healing, or width...
February 2024: Arthroscopy Techniques
https://read.qxmd.com/read/38433405/strength-and-functional-outcomes-following-achilles-tendon-reconstruction-with-hamstring-tendon-autograft-augmentation
#35
JOURNAL ARTICLE
Stephanie K Eble, Oliver B Hansen, Saanchi K Kukadia, David J Cho, Prashanth Kumar, Andrea K Papson, Mark C Drakos
BACKGROUND: The proposed advantages of hamstring autograft reconstruction when compared to alternative procedures, such as flexor hallucis longus (FHL) transfer, V-Y lengthening, and allograft reconstruction, are improved healing and reproduction of normal tendon biomechanics and reduced morbidity within the foot and ankle. In this study, we examined the effect of Achilles tendon reconstruction using hamstring autografts on strength and functional outcomes. METHODS: Patients who underwent Achilles repair with a hamstring autograft for insertional or midsubstance tendinopathy, delayed diagnosis of rupture, or infection after primary repair were evaluated for inclusion...
March 3, 2024: Foot & Ankle International
https://read.qxmd.com/read/38432352/effect-of-carbamide-peroxide-on-biomechanical-properties-of-vacuum-formed-retainers-a-split-mouth-randomized-controlled-trial
#36
JOURNAL ARTICLE
Carrol Jin, Andrew R Gray, Paul A Brunton, Mauro Farella, Li Mei
OBJECTIVE: To investigate the effect of tooth whitening on biomechanical properties of vacuum-formed retainers (VFRs). METHODS: Using a split-mouth, randomised controlled trial design, thirty participants were randomly allocated to receive whitening on either the upper or the lower arch, using 10% carbamide peroxide for two weeks. Biomechanical properties such as hardness, tensile strength, and surface roughness were assessed two weeks after whitening was completed...
March 1, 2024: Journal of Dentistry
https://read.qxmd.com/read/38432183/micromechanical-modelling-of-transverse-fracture-behaviour-of-lamellar-bone-using-a-phase-field-damage-model-the-role-of-non-collagenous-proteins-and-mineralised-collagen-fibrils
#37
JOURNAL ARTICLE
Hamid Alijani, Ted J Vaughan
At the tissue-scale and above, there are now well-established structure-property relationships that provide good approximations of the biomechanical performance of bone through, for example, power-law relationships that relate tissue mineral density to elastic properties. However, below the tissue-level, the individual role of the constituents becomes prominent and these simple relationships tend to break down, with more detailed theoretical and computational models are required to describe the mechanical response...
February 24, 2024: Journal of the Mechanical Behavior of Biomedical Materials
https://read.qxmd.com/read/38427791/can-the-sterilization-protocol-be-improved-to-enhance-the-healing-of-allograft-tendons-an-in-vivo-study-in-rabbit-tendons
#38
JOURNAL ARTICLE
Haoran Zhang, Mingyou Xu, Yiwei Zhao, Zhiyi Li, Bingtai Han, Shengru Wang, Jingyu Zhang, Jianguo Zhang, Yongcheng Hu
BACKGROUND: Peracetic acid and irradiation are common sterilization methods for allograft tendons; however, under some conditions, both methods adversely affect the fiber arrangement and ultimate load of the tendon. An in vitro study showed that low-dose peracetic acid combined with irradiation may be less detrimental to allograft tendon structure and properties, possibly because the breakdown of peracetic acid can lead to an enlargement of the interstitial spaces and an increase in porosity...
March 1, 2024: Clinical Orthopaedics and related Research
https://read.qxmd.com/read/38427372/experimental-study-of-autologous-platelet-rich-plasma-combined-with-sodium-hyaluronate-on-tendon-bone-healing-after-rotator-cuff-injury-repair-in-rabbits
#39
JOURNAL ARTICLE
Jie Ou, Haobo Wang, Ao Yan, Kunpeng Wang
OBJECTIVE: To investigate the therapeutic effects of autologous platelet-rich plasma (PRP) combined with sodium hyaluronate on tendon healing following rotator cuff injury repair in rabbits. METHODS: New Zealand white rabbits were randomly assigned to five groups: sham operation group, control group, PRP group, sodium hyaluronate group, and combined group, each comprising 12 rabbits. A rotator cuff injury model was established in all groups except the sham operation group...
March 1, 2024: Journal of Musculoskeletal & Neuronal Interactions
https://read.qxmd.com/read/38427365/mechanical-stress-via-muscle-contractile-exercise-suppresses-atrophic-alterations-of-bone-microstructure-in-immobilized-rat-femurs
#40
JOURNAL ARTICLE
Yasuhiro Kajiwara, Yuichiro Honda, Ayumi Takahashi, Natsumi Tanaka, Hironobu Koseki, Junya Sakamoto, Minoru Okita
OBJECTIVES: This study aimed to determine whether mechanical stress via muscle contractile exercise with belt electrode-skeletal muscle electrical stimulation (B-SES) device effectively prevents immobilization-induced bone atrophy. METHODS: Wistar rats were randomly divided into the control (CON) group, immobilization (IM) group (immobilized treatment only), HES and LES groups (immobilized treatment and high or low-intensity electrical muscular stimulation through B-SES device)...
March 1, 2024: Journal of Musculoskeletal & Neuronal Interactions
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