Foot Ulcers
Foot Ulcers - Related Videos
01:31
Diabetic Foot Ulcer
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2026
Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory neuropathy reduces pain perception,...
07:40
Foot Exam
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2023
Source: Robert E. Sallis, MD. Kaiser Permanente, Fontana, California, USA The foot is a complex structure composed of numerous bones and articulations. It provides flexibility, is the essential contact point needed for ambulation, and is uniquely suited to absorb shock. Because the foot must support the weight of the entire body, it is prone to injury and pain. When examining the foot, it is important to remove shoes and socks on both sides, so that the entire foot can be inspected and compared.
04:09
Prospective, Randomized, and Controlled Study of a Human Umbilical Cord Mesenchymal Stem Cell Injection for Treating Diabetic Foot Ulcers
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Cited by 11 •
2023
The present protocol describes a prospective, randomized, controlled clinical study that evaluates a human umbilical cord mesenchymal stem cell injection for the treatment of chronic diabetic foot ulcers.
01:27
Peptic Ulcer
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2026
Peptic ulcers are erosive lesions of the gastric or duodenal lining, most commonly caused by Helicobacter pylori infection. This Gram-negative, helical bacterium has adapted to survive the stomach’s acidic environment by producing urease, which converts urea into ammonia and carbon dioxide. The ammonia neutralizes gastric acid in the bacterium’s immediate environment, allowing colonization of the gastric mucosa. H. pylori attaches to mucus-secreting epithelial cells, penetrates the mucus...
01:28
Muscles of the Leg that Move the Foot and Toes
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2024
The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions. Anterior Compartment The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles.
FAQs
Reduced sensation can prevent a person from noticing trauma, pressure, or repeated injury to the foot. As a result, the damaging condition may continue without an appropriate response. This mechanism helps explain why a wound can become chronic even when pain or discomfort does not prompt attention, making monitoring and prevention biologically important.
Vascular disease can limit the delivery of oxygen and nutrients to injured tissue. Because these supplies support tissue repair, restricted circulation can delay healing and prolong tissue loss. The effect is especially important when impaired blood flow occurs alongside repeated injury or reduced sensation, since the wound may continue while repair remains limited.
Inflammation and infection can interfere with the tissue-repair processes needed for wound closure. When these problems occur in tissue already affected by repeated injury, reduced sensation, or limited circulation, healing may be further delayed. Their interaction helps explain why some wounds persist and why controlling complications is important for preventing deeper tissue involvement.
Foot ulcer research connects several biological processes rather than focusing on the surface wound alone. These include cellular aspects of wound healing, vascular function, microbial infection, inflammation, and tissue regeneration. Studying their relationships can clarify why repair fails, identify factors associated with chronic wounds, and guide therapies intended to promote closure.
A biologically informed assessment considers whether repeated injury or pressure is occurring, whether sensation is reduced, and whether circulation can deliver adequate oxygen and nutrients. It also examines the roles of inflammation, infection, and delayed tissue repair. Considering these linked factors supports earlier detection of problems and helps identify opportunities for prevention.
Biological research can support earlier detection by clarifying how impaired sensation, pressure, circulation, inflammation, infection, and delayed repair contribute to wound persistence. It can also inform therapies designed to promote closure. These advances are relevant to prevention because identifying problems sooner may reduce progression to deep infection and other serious complications.
A central goal is reliable wound closure, supported by therapies that improve tissue repair. Research also aims to reduce complications that may arise when healing is delayed, including deep infection and amputation. Earlier detection and prevention are important outcomes as well, because they address problems before a chronic wound progresses to more severe tissue damage.