ulnar artery

The dominance of the radial or ulnar artery at the forearm level and their contributions to the circulation of the hand remain a matter of contention...

..Use of the radial artery as a conduit for coronary artery surgery has increased dramatically. It has been assumed that blood flow to the forearm will not be compromised by its removal...

..The brachial arteries divided into the ulnar and radial arteries. The ulnar artery gave off the median and posterior interosseous arteries at the same point, although the anterior interosseous ..

..2. The deep (definitive) brachial artery continues in the forearm as the ulnar artery under the superficial flexor muscles of the forearm. 3...

..It is obvious that accurate information concerning unusual patterns of the arteries in the upper limbs is relevant clinically, especially in order to avoid accidental injury or intra-arterial injection...

..This may be because of variations in vascular anatomy, leading to confusion during dissection of the flap...

..radial forearm flap donor defects, a total of 10 bilobed flaps based on the fasciocutaneous perforator of the ulnar artery were designed at the Chang Gung Memorial Hospital in Kaohsiung in the period from January of 2002 to January of ..

Digital artery embolization and ulnar artery thrombosis are consequences of repetitive trauma and can lead to digit loss and debility from ischemia and cold intolerance...

A case of pseudoaneurysm of the ulnar artery occurring after distal radius and ulna fracture is presented. This case illustrates an uncommon complication following a fairly common injury.

..The anatomical and embryological significance of the findings are discussed...

The superficial ulnar artery (SUA) is an anatomical variation of the upper limb vasculature with a prevalence of 0.7-9.4% in the population...

..Among these, a pedicled adipofascial flap based on the most proximal two to four perforators of the ulnar artery (located 1 to 5 cm from the origin of the artery) can be anastomosed to form a sort of axially patterned blood ..

..We found that ulnar artery involvement is frequent in systemic sclerosis, although the precise mechanism is not known...

..We investigated if large artery involvement, that is, ulnar artery occlusion, has a role in the development of refractory digital ulcerations, and if both screening for this ..

..flow to the forearm territory was decreased by 20% after RA harvest despite the compensatory dilatation of ulnar artery. The presence of low perfusion in the affected hand has been pointed out in some studies...

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..In type S-I (40%), the SPA is formed by anastomosis of the superficial volar branch of the radial artery to the ulnar artery. Type S-II (35%) is formed entirely of the ulnar artery...

..It may be anatomically possible to raise two different island flaps from the dorsum of the wrist...

..Only scant information is available on the chronic consequences of radial artery removal for coronary artery bypass surgery on forearm circulation...

..The preoperative Allen test to diagnose occlusion of radial or ulnar artery was satisfactory...

..Comparison of vessel diameters revealed the radial artery to be significantly larger than the ulnar artery but the ulnar artery to be larger than the superficial branch of the radial artery...

An anomalous superficial ulnar artery was found in the left arm of a 60-year-old man during anatomical dissection. It originated from the brachial artery approximately 6 cm distally to profound brachial artery...

..The aim of this study was to evaluate angiographic changes in the ulnar and interosseous arteries, and the collateral circulation of forehand after harvesting radial artery...

..Work habits of patients should be considered in radial harvest decisions, especially if preoperative Doppler echography indicates lower flow reserves for the ulnar artery.

..4% vs. 24.4%). The anatomical variants found included ulnar artery hypoplasia in 3.9% of patients and high brachial artery bifurcation in 2.4% of patients...

..We concluded that preoperative Modified Allen's test is not necessary for side-to-end radio-cephalic arterio-venous fistulae of the forearm...

..The purpose of this study was to assess the accuracy of the Allen's test (AT) in predicting hand ischemia in patients undergoing transradial coronary angiography...

..To investigate the chronic consequences of radial artery removal for coronary artery bypass surgery on the forearm circulation...

..The clinical value of adipofascial flaps based on distal ulnar or radial-artery perforators is demonstrated in a series of 14 patients with severe hand injuries and significant soft tissue defects requiring coverage...

..We describe a modification of Allen's test based on the anatomy of the radial artery branches that could potentially decrease the number of false negative tests...

..05). Before the surgery a significant increase in temperature over the ulnar artery was observed after the handgrip test. There were no clinical symptoms of acute or subacute hand ischemia...

..Two cases of reconstruction with free true perforator flaps in the hand and forearm region are reported. This is the first report of free true perforator flaps...

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..The purpose of this study was to identify the location of the palmar arches in relation to surface and bony landmarks...

..A subsequent staged revascularization of the upper extremity was successfully accomplished with a brachial to radial artery bypass and ulnar artery transposition.

..quot; The main advantages of these flaps could be summarized as: no microsurgical sutures, no main vascular pedicles sacrifice, same surgical field, shorter hospitalization time...

..Arterialization of the venous system of the hand is a straightforward surgical procedure that provides arterial blood to the distal soft tissues of an ischemic hand...

..Most cases were found at the complete AI group (17 hands). Comparison of the arterial diameters showed the ulnar artery was the dominant vessel of the palm...

..CONCLUSIONS: This consistency explains the anatomical basis for the realization of composite-free tissue transfer in cases of banked fingers. The osteotomies could be performed at well-defined distances from the joints...

..branches of the radial artery; 2) the anterior-medialis vascular plexus from cutaneous branches of the ulnar artery; 3) the dorso-lateral vascular plexus from radial osteal and cutaneous branches; 4) the dorso-medialis vascular ..

..Arteriography showed an occluded ulnar artery, a tortuous superficial palmar arch and absent deep palmar arch, and multiple small vessels that arose from the ..

The superficial ulnar artery (SUA) is an ulnar artery of high origin that lies superficially in the forearm. Its reported frequency ranges from 0.17% to 2%...

..of the palmar type, terminating in the hand as the princeps pollicis and radialis indicis arteries; b) the ulnar artery giving only two common palmar digital arteries; c) the second digital palmar artery without division into two ..

..Hypothenar hammer syndrome with involvement of the ulnar artery is much more frequently encountered than thenar hammer syndrome, which is caused by damage to the radial artery...

..Changes describing digital and forearm circulation after radial artery harvest have been reported infrequently...

..Although cold sensitivity was unchanged, symptoms decreased and upper extremity function and health-related quality of life improved after successful proximal reconstruction in patients with 2-level arterial occlusion...

Most surgeons advocate an Allen test (for occlusion of the radial or ulnar artery) and Doppler ultrasound examination before harvesting a forearm flap...

Historical descriptions of the ulnar artery as the dominant vessel to the hand appear to be inconsistent with clinical experience...

..If a longer pedicle is required, the bone graft can be pedicled on the anterior branch of the anterior interosseous artery with retrograde flow occurring from the palmar carpal arch...

..Assessment of the post-operative results of peripheral sympathectomy in Raynaud's phenomenon...

..Two clinical cases are outlined for illustration...

..Lovie and coworkers published the possibility to elevate this flap with the ulnar artery in 1984...

..Therefore, it seems sensible to preserve the communication between the anterior interosseous and the radial arteries through the palmar carpal arch, raising the radial artery for surgery...

..The arterial supply was based on co-dominant median and ulnar arteries. This description raises issues regarding anatomical vascular aberrations when planning forearm flaps...

..The variable terminology previously used was unified into a homogenous and complete classification, with 12 categories covering all the previously reported variant patterns of the arm and forearm...

..This circle represents the unique vascularization source of the reverse "extreme" lateral arm flap...

..This qualitative test measures the time needed for maximal palmar blush after release of the ulnar artery compression with occlusive pressure of the radial artery...

..Hypoplasia of the ulnar artery is even more rare...

..To investigate the involvement of arteries other than the temporal arteries in active giant cell arteritis using color Doppler sonography...

..To investigate the operative techniques and clinical results of repairing the soft tissue defects of forearm and hand with free peroneal perforator-based sural neurofasciocutaneous flap...

..The objective of our work was to investigate the operative technique and clinical results of repairing the soft tissue defects of hand and forearm with free peroneal perforator-based sural neurofasciocutaneous flap...

..approach is used, where the needle passes through or medial to the flexor carpi ulnaris tendon; however, the ulnar artery is at risk because the needle may accidentally penetrate it, causing profuse bleeding...

..Whereas the ulnar artery within Guyon's canal is frequently located radial to the hook of the hamate, injury to this structure has not ..

..In an attempt to improve the versatility of the radial forearm flap, a new design was developed: the transverse radial artery forearm flap...

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..The postoperative examination of our patients' hand function and circulation proved that beside the transient neurological complications chronic hand circulatory disorders may arise...

..However, ulnar nerve compression at Guyon's canal by vascular lesion is rare. Ulnar artery aneurysm, tortous ulnar artery, hemangioma, and thrombosis have been reported in the literature as vascular ..

..To highlight the potential for vascular injury with fracture of the distal radius...

..We wanted to present our experiences for performing transradial cerebral angiography during the learning period, and we also wanted to demonstrate this procedure's technical feasibility and utility in various clinical situations...

..To compare Doppler and oscillometric methods of indirect arterial blood pressure (IBP) with direct arterial measurements in anesthetized and awake red-tailed hawks...

..Wounds on the palmar side of the wrist affecting the median or ulnar nerves are responsible for motor and sensory sequelae, severe pain and cold intolerance...

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..arteriovenous fistula and DASS underwent RUDI as described above using either the proximal radial or ulnar artery as inflow and vein as conduit...

..To determine the level of agreement between direct and indirect blood pressure measurements obtained from healthy Hispaniolan Amazon parrots (Amazona ventralis) anesthetized with isoflurane...

..We present the case of an elderly woman with an intramuscular thrombosed AH on the volar side of the upper right arm. Owing to the close proximity of the ulnar nerve, this lesion was initially identified as a neuroma...

..presented hyperglycemia and serum sickness while the second recipient suffered a thrombosis of the right ulnar artery and an osteomyelitis of left ulna. All the complications were successfully treated...

..In contrast to previous investigators, we documented the presence of abnormalities in younger, asymptomatic individuals...

..forms and types of the "distal" anastomosis and the connections to the dorsal carpal arch and the ulnar artery. A distal anastomosis between the AIA and AIP was found in 65 of the 66 upper extremities...

..We therefore introduced the snuffbox technique, measuring the radial artery at the anatomic snuffbox, which is the most distal area after harvesting. Color Doppler methods were compared with the stump pressure as a criterion standard...

The authors present an extremely rare case of a pseudoaneurysm of the ulnar artery as a complication of a two-portal endoscopic carpal tunnel release (ECTR)...

..Under limited conditions, use of the radial artery (RA) for hemodialysis access in patients with end-stage renal disease is safe and effective...

..To establish an effective approach for diagnosis and treatment of hand ischemia in matured radiocephalic arteriovenous fistulae (AVF)...

..In cases of aneurysm of the ulnar artery, we performed each time an aneurysm resection followed by direct anastomose alone, while three patients had ..

..Sequelae of this syndrome include both true and false aneurysms, as well as thrombosis of the ulnar artery due to its vulnerability to blunt trauma as it exits Guyon's canal...

..were used to calculate vessel dominance by comparing pulse volume plethysmography amplitudes during radial or ulnar artery compression...

..On imaging diagnosis of Guyon's canal syndrome because of tortuous ulnar artery was made with additional findings of DeQuervain's stenosing tenosynovitis and dorsal intercalated segmental ..

..adjacent deep forearm fascia midway between the ulnar margin of the median nerve and the radial margin of the ulnar artery. After ultrasonographic design of a 1.0 to 1...

ABSTRACT: The superficial ulnar artery is a rare variation of the upper limb arterial system that arises from the brachial or axillary artery and runs superficial to the muscles arising from the medial epicondyle 123...

..We report the technique of transradial vertebral artery stenting for two patients in whom severe supra-aortic ectasia prevented ready access to the right vertebral artery origin...

..Dividing one or two distal segmental branches of the ulnar artery to the distal flexor digitorum superficialis exposes the pronator quadratus...

..Angiography demonstrated a 13- x 11-mm aneurysm and a capped rupture of the ulnar artery. Because of the complicated soft-tissue condition, interventional treatment was indicated...

..The clinical case, techniques, results are described and discussed. We consider it a useful technique, especially for those with a rather severe vascular defect...

..We performed a radical surgical excision of the lesion and covered the defect with a distal ulnar artery skin island flap. Adjuvant radiation therapy followed the surgical treatment...

..This work will provide novel information about the pathogenesis and management of PAD. ..

..data show that removal of the radial artery for use as a bypass conduit produces a marked increase in ulnar artery flow as it accommodates the required supply of blood to the hand...

..End of Abstract) ..

..3) Identify and characterize additional protein modifications stimulated by low concentrations of H202, and use this information to establish signaling pathways for sensing H202 in human endothelial cells. ..

..data show that removal of the radial artery for use as a bypass conduit produces a marked increase in ulnar artery flow as it accommodates the required supply of blood to the hand...