Articles tagged with Toes
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Researchers discovered that geckos have trouble sticking to smooth, wet surfaces when their feet get wet. The animals' toes produce a water-repellent layer, which interferes with their adhesive mechanism. However, once the lizards' feet dry, they can regain their grip and walk on wet surfaces.
Researchers at the University of Akron are studying geckos' foot pads to develop a synthetic adhesive that sticks when wet. The team hopes to create materials for surgical procedures and other applications where adhesion is crucial in wet environments.
Researchers found that geckos gained and lost sticky toepads independently in various groups, with the loss occurring in species living on sandy dunes. The study's findings shed light on how geckos' unique adaptation evolved over time, providing insights for developing new adhesive technologies.
A recent study found that gecko toepads evolved multiple times in response to habitat changes. The researchers constructed the most complete gecko family tree ever made and discovered that sticky pads appeared independently in over 11 different gecko groups, while also being lost in at least nine others.
Researchers found that geckos' toe pads have microscopic hairs that clean themselves by hyperextending their toes. This discovery could lead to reusable adhesives like duct tape.
The June issue of the Journal of the American Academy of Orthopaedic Surgeons highlights the negative impact of smoking on bone and joint health. Smokers face increased risks of postoperative complications and bone density loss, but preoperative counseling programs can mitigate these effects. The journal also discusses treatment option...
The Journal of the American Academy of Orthopaedic Surgeons May issue highlights new review articles on treating pediatric toe walking, managing pain after rotator cuff surgery, and other orthopaedic topics. The articles provide insights into diagnosis, treatment options, and patient outcomes.
Researchers have found a partial foot skeleton that belongs to an early human ancestor, distinct from Lucy's species and Ardipithecus ramidus. The Burtele foot shows unique characteristics, including an opposable great toe, suggesting the presence of multiple hominin species during the late Pliocene era.
The discovery of a 3.4 million-year-old foot fossil in Ethiopia confirms the coexistence of two human ancestor species with different locomotion methods. The analysis suggests that more than one species existed between 3 and 4 million years ago, challenging previous assumptions about human evolution.
Lesser toe deformities, such as hammer toes and claw toes, can cause significant pain and limit activities. Improper footwear is a common cause, while genetic and neuromuscular conditions also play a role. Nonsurgical treatments like pads and gel sleeves can be effective, but surgery may be necessary for severe cases.
A woman with diabetic neuropathy lost her leg after her Jack Russell terrier chewed off part of her infected big toe while she slept. The case study emphasizes the need for patients to protect their feet from pets and infections.
The arch dam's performance is affected by the relaxation of its foundation following excavation. The study found that relaxation increases principal tensile stresses at the upstream face and compressive stress at the downstream face, which is undesirable for safety.
A new computational model of the human foot reveals the importance of toe strength in determining body balance. The model's findings support previous studies on real people and could lead to improved robotic body parts and prosthetics.
A study found that bunion deformity progressively reduces health-related quality of life (HRQOL), affecting general and foot-specific well-being. Hallux valgus severity is linked to increased impairment and lower scores in pain and function subscales.
Researchers recreated ancient Egyptian artificial toes and tested them on volunteers, finding they could help with walking. The toes date from before 600BC, predating the Roman Capula Leg as the earliest known practical prosthesis.
Researchers at Cambridge University have finally resolved the debate on how fleas jump, discovering that they push off with their toes. The team used high-speed cameras and mathematical modeling to analyze flea jumps, finding that both the tarsus and trochanter were involved in the jumping process.
A new study found that African Americans are three times more likely to have corns or flat feet than whites, with twice the likelihood of having bunions and hammer toes. The study, led by Yvonne M. Golightly, suggests a real racial difference in foot disorders beyond obesity.
A Stanford mechanical engineer created a robot that can climb smooth surfaces like glass using the sticky property of a gecko's foot. The robot uses a material with tiny hairs to create directional adhesion, allowing it to stick and unstick from surfaces easily.
Researchers found that fossil footprints made 3.6 million years ago show a human-like striding gait, indicating bipedalism among early hominins. The study suggests that humans' ancestors were more energetically efficient with their walking posture than previously thought.
A University of Utah study shows that heel-first walking is more economical for humans than ball-of-foot or toe walking. The research suggests that early human hunter-gatherers may have retained this foot posture due to its stability and agility advantages, despite being less efficient for running.
Researchers found that humans' heel-first gait is more efficient for walking due to reduced energy loss and improved muscle efficiency. However, there was no significant difference in efficiency between heel-first and toe-first postures while running.
Researchers found that sprinters have significantly shorter lever arms in their ankles compared to non-sprinters. This allows muscles to produce greater force without sacrificing speed. The study suggests that a unique foot structure is essential for sprinting success, with longer toes providing an additional advantage.
Research by Stephen Piazza and Sabrina Lee found that elite sprinters' Achilles tendons translate 25% less than non-sprinters. Despite this mechanical disadvantage, sprinters still possess a powerful push-off due to slow-contracting muscles producing greater forces.
The Ileret footprints, found in Kenya, display human-like arch and short toes associated with an upright bipedal stance. The prints are attributed to Homo ergaster or early Homo erectus, a hominid with body proportions similar to modern humans.
Researchers found that tiny structures in the joint lining mimic antibody-producing lymph nodes and support specific antibody production, potentially leading to joint destruction. The processes can occur independently of the body's lymph nodes, suggesting a new treatment modality for rheumatoid arthritis targeting lymphoid structures.
A study of gibbon foot movements suggests that early humans may have used elastic energy storage mechanisms to walk efficiently. The gibbon's flexible foot allows for more efficient energy storage and release, similar to the human foot.
The new adhesive sheds dirt particles with each use, unlike traditional sticky tapes that attract dust. After 30 simulated steps, the adhesive recovered one-third of its original adhesion strength, showing promise for future robot development.
Researchers at UC Berkeley discovered that geckos rely on their active tails to prevent falling off vertical surfaces and navigate through mid-air. The study has implications for designing better climbing robots and may aid in space exploration.
A University of Calgary biologist has made a groundbreaking discovery about geckos' ability to stick to surfaces using their unique toe pads. By studying the microscopic level of setae structures on gecko feet, researchers found that friction plays a crucial role in geckos' adhesion system.
Research reveals tree frogs maintain grip by keeping toe pad angle low, detaching at 90°. Larger species adapt to grasp objects, allowing them to climb like humans.
Research at Vanderbilt University Medical Center found that cholesterol attachment to the developmental protein Sonic hedgehog controls finger and toe development in mice. Without cholesterol, mice developed extra digits and malformed toes.
A study by Children's Hospital of Philadelphia found that smoking during pregnancy increases the risk of congenital digital anomalies, such as polydactyly and syndactyly, by up to 78%. The risk is higher for women who smoke more than a pack of cigarettes per day.
Researchers found a significant link between smoking during pregnancy and an increased risk of digital anomalies, including polydactyly, syndactyly, and adactyly. The study discovered that pregnant women who smoked one to 10 cigarettes per day increased the risk by 29 percent.
Studies reveal that the ventral frontal lobe and orbitofrontal cortex respond to somatosensory stimulation, while other areas show less consistent activation. The findings suggest a more modality-specific sensory process in humans compared to monkeys.
Researchers discovered three-dimensional record of locomotor behavior in Triassic-period dinosaurs preserved in fossil footprints. The tracks showed that both theropod dinosaurs and birds moved their feet in a similar way, with the toes collapsing together below the surface as the entire foot emerged.
The article discusses how manufacturers can use human factors theory and research to create computer programs that specify the number of different-sized versions of a product needed for each target market. This approach allows for a better fit and comfort for consumers, while also reducing costs and improving safety. The program helps ...