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Ulnar Tunnel Syndrome
Ulnar tunnel syndrome, also known as Guyon's canal syndrome or Handlebar palsy, is ulnar neuropathy at the wrist where it passes through the ulnar tunnel (Guyon's canal). The most common presentation is a palsy of the deep motor branch of the ulnar nerve causing weakness of the interosseous muscles. Ulnar tunnel syndrome is usually caused by a ganglion cyst pressing on the ulnar nerve, other causes include traumas to the wrist and repetitive movements, but often the cause is unknown (idiopathic). Long distance bicycle rides are associated with transient alterations in ulnar nerve function. Sensory loss in the ring and small fingers is usually due to ulnar nerve entrapment at the cubital tunnel near the elbow, which is known as cubital tunnel syndrome, although it can uncommonly be due to compression at the wrist. Causes Ulnar neuropathy at the wrist is often associated with a mass such as a ganglion cyst or thrombosis or an aneurysm of the ulnar artery. The role of activities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulnar Neuropathy
Ulnar neuropathy is a disorder involving the ulnar nerve. Ulnar neuropathy may be caused by entrapment of the ulnar nerve with resultant numbness and tingling. It may also cause weakness or paralysis of the muscles supplied by the nerve. Ulnar neuropathy may affect the elbow as cubital tunnel syndrome. At the wrist a similar neuropathy is ulnar tunnel syndrome. Signs and symptoms In terms of the signs/symptoms of ulnar neuropathy trauma and pressure to the arm and wrist, especially the elbow, the medial side of the wrist, and other sites close to the course of the ulnar nerve are of interest in this condition. Many people complain of sensory changes in the fourth and fifth digits. Rarely, an individual actually notices that the unusual sensations are mainly in the medial side of the ring finger (fourth digit). Sometimes the third digit is also involved, especially on the ulnar (medial) side. The sensory changes can be a feeling of numbness or a tingling, pain rarely occurs in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aneurysm
An aneurysm is an outward :wikt:bulge, bulging, likened to a bubble or balloon, caused by a localized, abnormal, weak spot on a blood vessel wall. Aneurysms may be a result of a hereditary condition or an acquired disease. Aneurysms can also be a wikt:Special:Search/nidus, nidus (starting point) for clot formation (thrombosis) and Embolism, embolization. As an aneurysm increases in size, the risk of rupture increases, which could lead to uncontrolled bleeding. Although they may occur in any blood vessel, particularly lethal examples include aneurysms of the circle of Willis in the brain, aortic aneurysms affecting the thoracic aorta, and abdominal aortic aneurysms. Aneurysms can arise in the heart itself following a Myocardial infarction, heart attack, including both Ventricular aneurysm, ventricular and atrial septal aneurysms. There are congenital atrial septal defect, atrial septal aneurysms, a rare heart defect. Etymology The word is from Greek language, Greek: ἀνεύρ� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulnar Claw
An ulnar claw, also known as claw hand or Spinster’s Claw, is a deformity or an abnormal attitude of the hand that develops due to ulnar nerve damage causing paralysis of the lumbricals. A claw hand presents with a hyperextension at the metacarpophalangeal joints and flexion at the proximal and distal interphalangeal joints of the 4th and 5th fingers. The patients with this condition can make a full fist but when they extend their fingers, the hand posture is referred to as claw hand. The ring- and little finger can usually not fully extend at the proximal interphalangeal joint (PIP). This can be commonly confused with the hand of benediction or pope's blessing, which is caused by proximal (at elbow level) median nerve damage. Presentation Patients exhibiting an ulnar claw are also very frequently unable to spread (abduct) or pull together (adduct) their fingers against resistance. This occurs because the ulnar nerve also innervates the palmar and dorsal interossei of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Casimir Félix Guyon
Jean Casimir Félix Guyon (21 July 1831 – 2 August 1920) was a French surgeon and urologist born in Saint-Denis, Ile-Bourbon (Réunion). He studied medicine in Paris, receiving his doctorate in 1858. He was appointed ''médecin des hôpitaux'' in 1864, and was later a professor of surgical pathology (from 1877) and genitourinary surgery (from 1890) at the University of Paris. In 1878 he became a member of the ''Académie de Médecine''. At Hôpital Necker he held clinics that were attended by students worldwide In 1907, he along with urologists from Europe, the United States and South America established the ''Association Internationale d'Urologie''. In 1979 he was commemorated on a postage stamp, issued by France on the occasion of the 18th Congress of the ''Association Internationale d'Urologie'', held in Paris. The Hôpital Félix Guyon, located in Saint-Denis, Réunion, is named in his honour. Although he was primarily known for work with genitourinary anatomy, Guyon is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulnar Nerve Entrapment
Idiopathic ulnar neuropathy at the elbow is a condition where pressure on the ulnar nerve as it passes through the cubital tunnel causes ulnar neuropathy. The symptoms of neuropathy are paresthesia (tingling) and numbness (loss of sensation) primarily affecting the little finger and ring finger of the hand. Ulnar neuropathy can progress to weakness and atrophy of the muscles in the hand (interossei and small and ring finger lumbricals). Symptoms can be alleviated by the use of a splint to prevent the elbow from flexing while sleeping. Signs and symptoms In general, ulnar neuropathy will result in symptoms in a specific anatomic distribution, affecting the little finger, the ulnar half of the ring finger, and the intrinsic muscles of the hand. The specific symptoms experienced in the characteristic distribution depend on the specific location of ulnar nerve compression. The hallmark symptoms of ulnar neuropathy at the elbow (cubital tunnel syndrome) is paresthesia (tingling). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guyon Canal Syndrome Zones
Guyon is a French surname. Geographical distribution As of 2014, 85.7% of all known bearers of the surname ''Guyon'' were residents of France (frequency 1:4,367), 4.8% of the United States (1:427,011), 2.4% of Canada (1:87,614), 1.7% of the Philippines (1:327,626) and 1.1% of Gabon (1:9,351). In France, the frequency of the surname was higher than national average (1:4,367) in the following regions: * 1. Bourgogne-Franche-Comté (1:1,012) * 2. Pays de la Loire (1:1,802) * 3. Centre-Val de Loire (1:2,925) * 4. Brittany (1:3,370) * 5. Auvergne-Rhône-Alpes (1:3,951) * 6. Corsica (1:4,330) People *Adrien Guyon (1866–?), French Olympic fencer *Alexandre Guyon (1829–1905), French actor * Isabelle Guyon (born 1961), French-born researcher in machine learning * James Guyon Jr. (1778–1846), politician and cavalry officer from Staten Island, New York *Jean Guyon du Buisson (1592–1663), master mason and early settler of Quebec, Canada *Jean Casimir Félix Guyon (1831–1920), French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulnar Artery
The ulnar artery is the main blood vessel, with oxygenated blood, of the Human Anatomical Terms#Anatomical directions, medial aspects of the forearm. It arises from the brachial artery and terminates in the superficial palmar arch, which joins with the superficial branch of the radial artery. It is palpable on the anterior and medial aspect of the wrist. Along its course, it is accompanied by a similarly named vein or veins, the ulnar vein or ulnar veins. The ulnar artery, the larger of the two terminal branches of the brachial, begins a little below the bend of the Elbow-joint, elbow in the cubital fossa, and, passing obliquely downward, reaches the ulnar side of the forearm at a point about midway between the elbow and the wrist. It then runs along the ulnar border to the wrist, crosses the transverse carpal ligament on the radial side of the pisiform bone, and immediately beyond this bone divides into two branches, which enter into the formation of the Superficial palmar a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrombosis
Thrombosis () is the formation of a Thrombus, blood clot inside a blood vessel, obstructing the flow of blood through the circulatory system. When a blood vessel (a vein or an artery) is injured, the body uses platelets (thrombocytes) and fibrin to form a blood clot to prevent blood loss. Even when a blood vessel is not injured, blood clots may form in the body under certain conditions. A clot, or a piece of the clot, that breaks free and begins to travel around the body is known as an embolus. Thrombosis can cause serious conditions such as stroke and heart attack. Thrombosis may occur in veins (venous thrombosis) or in arteries (arterial thrombosis). Venous thrombosis (sometimes called DVT, deep vein thrombosis) leads to a blood clot in the affected part of the body, while arterial thrombosis (and, rarely, severe venous thrombosis) affects the blood supply and leads to damage of the tissue supplied by that artery (ischemia and necrosis). A piece of either an arterial or a v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wrist
In human anatomy, the wrist is variously defined as (1) the carpus or carpal bones, the complex of eight bones forming the proximal skeletal segment of the hand; "The wrist contains eight bones, roughly aligned in two rows, known as the carpal bones." (2) the wrist joint or radiocarpal joint, the joint between the radius and the carpus and; (3) the anatomical region surrounding the carpus including the distal parts of the bones of the forearm and the proximal parts of the metacarpus or five metacarpal bones and the series of joints between these bones, thus referred to as ''wrist joints''. "With the large number of bones composing the wrist (ulna, radius, eight carpas, and five metacarpals), it makes sense that there are many, many joints that make up the structure known as the wrist." This region also includes the carpal tunnel, the anatomical snuff box, bracelet lines, the flexor retinaculum, and the extensor retinaculum. As a consequence of these various definitions, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cubital Tunnel
The cubital tunnel is a space of the dorsal medial elbow which allows passage of the ulnar nerve around the elbow. Persistent compression of the ulnar nerve in the cubital tunnel is known as cubital tunnel syndrome. Structure The cubital tunnel is bordered medially by the medial epicondyle of the humerus, laterally by the olecranon process of the ulna and the tendinous arch joining the humeral and ulnar heads of the flexor carpi ulnaris. The roof of the cubital tunnel is elastic and formed by a myofascial trilaminar retinaculum (also known as the epicondyloolecranon ligament or Osborne band). In 14% of individuals, the roof of this tunnel is covered by the epitrochleoanconeus muscle, an accessory muscle. Clinical significance Chronic compression of the ulnar nerve in the cubital tunnel is known as cubital tunnel syndrome. There are several sites of possible compression, traction or friction of the ulnar nerve as it courses behind the elbow. It may also be caused by repetiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
