China
Africa
Explore chapters and articles related to this topic
Pediatric hand trauma
Published in David E. Wesson, Bindi Naik-Mathuria, Pediatric Trauma, 2017
Jeffrey G. Trost, Ann L. Licht, John D. Potochny, Larry H. Hollier
The deep palmar arch gives off the palmar metacarpal arteries. These, in turn, become the digital arteries that travel alongside corresponding digital nerves along the volar aspect of each side of the fingers. The ulnar artery supplies two additional named arteries that supply the thumb muscle and index finger, namely, the princeps pollicis artery and the radialis indicis artery, respectively. The princeps pollicis artery runs between the flexor pollicis brevis muscle and the tendon of the FPL while the radialis indicis artery travels along the radial side of the index finger. Finally, tendons receive their blood supply in the digits from vincula, folds of mesotendon that contain small blood vessels and may additionally act as anchors to prevent proximal retraction of a severed tendon. When there is a question of injury, a Doppler should be used to test for a signal.
The Heart (HT)
Published in Narda G. Robinson, Interactive Medical Acupuncture Anatomy, 2016
Superficial palmar arch: This constitutes the main termination of the ulnar artery. The superficial palmar arch gives rise to three common palmar digital arteries. These arteries anastomose with the palmar metacarpal arteries, which arise from the deep palmar arterial arch. In contrast to the superficial palmar arch which arises mainly from the ulnar artery, the radial artery provides the main arterial basis for the deep palmar arch. The superficial and deep palmar arterial arches serve as the main sources of blood supply to all structures in the human hand. Preservation of fetal arteries in dominant hands may account for the preservation of complete superficial arterial arches into adulthood.5
Spontaneous necrosis of a single digit: watershed necrosis
Published in Case Reports in Plastic Surgery and Hand Surgery, 2021
Alain J. Azzi, Gabriel Bouhadana, Fanyi Meng, Peter G. Davison
Classically, the radial and ulnar arteries enter the hand and anastomose across the palm to form the superficial and deep palmar arches. Normally, the main supply of the deep palmar arch (DPA) is the radial artery, whereas the superficial palmar arch (SPA) is ulnar-dominant. The DPA usually branches to form the princeps pollicis and the radial digital artery of the second digit. The SPA gives off the ulnar digital artery of the fifth digit and the common palmar digital arteries in the second, third and fourth web spaces. Vascular redundancy and interconnections render the blood supply to the hand and digits robust. Examples include interconnections between the deep and superficial arches, between the palmar metacarpal arteries and the digital arteries, between the dorsal metacarpal arteries and the digital arteries, etc. Anatomical variations are common and do not usually pose a risk to digit blood supply due to this network of interconnections. We present a case of spontaneous ‘watershed’ necrosis of a single digit caused by arterial disease, a pathology that would have otherwise been benign in patients with normal anatomy. To our knowledge, this mechanism of digit necrosis has yet to be reported in the literature.