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Subcutaneous emphysema can result from puncture of parts of the respiratory or gastrointestinal systems. Particularly in the chest and neck, air may become trapped as a result of penetrating trauma (e.g., gunshot wounds or stab wounds) or blunt trauma. Infection (e.g., gas gangrene) can cause gas to be trapped in the subcutaneous tissues.
Pneumocephalus. Pneumocephalus is the presence of air or gas within the cranial cavity. It is usually associated with disruption of the skull: after head and facial trauma, tumors of the skull base, after neurosurgery or otorhinolaryngology, and rarely, spontaneously. Pneumocephalus can occur in scuba diving, but is very rare in this context.
Air sac. Air sacs are spaces within an organism where there is the constant presence of air. Among modern animals, birds possess the most air sacs (9–11), with their extinct dinosaurian relatives showing a great increase [clarification needed] in the pneumatization (presence of air) in their bones. [1] Birds use air sacs for respiration as ...
Joint cracking is the manipulation of joints to produce a sound and related "popping" sensation. It is sometimes performed by physical therapists, chiropractors, osteopaths [1] pursuing a variety of outcomes. The cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems.
20 per 100,000 per year [ 3 ][ 5 ] A pneumothorax is an abnormal collection of air in the pleural space between the lung and the chest wall. [ 3 ] Symptoms typically include sudden onset of sharp, one-sided chest pain and shortness of breath. [ 2 ] In a minority of cases, a one-way valve is formed by an area of damaged tissue, and the amount of ...
Orbital emphysema (/ˈɔː(r)bɪt(ə)l ˌemfɪˈsiːmə/, also known as pneumo-orbit [8]) is a medical condition that refers to the trapping of air within the loose subcutaneous around the orbit that is generally characterized by sudden onset swelling and bruising at the impacted eye, with or without deterioration of vision, which the severity depends on the density of air trapped under the ...
Decompression sickness (DCS; also called divers' disease, the bends, aerobullosis, and caisson disease) is a medical condition caused by dissolved gases emerging from solution as bubbles inside the body tissues during decompression. DCS most commonly occurs during or soon after a decompression ascent from underwater diving, but can also result ...
Traumatic pneumorrhachis is a medical condition in which air has entered the spinal canal. Traumatic pneumorrhachis is very rare phenomenon. Only eight cases with pneumorrhachis extending to more than one spinal region had been reported in the literature. [1][2] Gordon had initially described the phenomenon of intraspinal air. [3]