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Lateral Arms (lateral + arm)

Distribution by Scientific Domains

Medical Sciences	40%

Selected Abstracts

Linezolid-induced purpuric medication reaction

JOURNAL OF CUTANEOUS PATHOLOGY, Issue 7 2009
Flora S. Kim
A 64-year-old Caucasian male was seen in consultation for a petechial eruption that began 9 days after he started linezolid therapy for a retroperitoneal abscess. Skin findings included confluent non-blanching petechiae and purpura covering his entire body, without any active bleeding. A punch biopsy from the left lateral arm was performed and showed a perivascular inflammatory infiltrate composed of lymphocytes, histiocytes and rare eosinophils, and extravasated erythrocytes. Changes of leukocytoclastic vasculitis were not noted. Linezolid was promptly discontinued. To our knowledge, this is the first report of a biopsy-proven purpuric medication reaction secondary to linezolid therapy. [source]

Free osteocutaneous lateral arm flap: Anatomy and clinical applications

MICROSURGERY, Issue 2 2003
Franz Haas M.D.
For many surgeons, the potential to reconstruct skin, fascia, tendon, or bone in a single-stage procedure has made the lateral arm flap the technique of choice for reconstruction of complex defects. The aim of this study was to examine more closely how the humeral bone is supplied by the posterior collateral radial artery. To this end, we dissected 30 cadaver arms to determine the vascular relationship of the lateral arm flap to the humerus. The number of directly supplying vessels, and height to the lateral epicondyle of the humerus, were examined. The reconstructive potential of the osteocutaneous flap in different indications is analyzed in a series of five clinical cases. In all dissected extremities, we found one or two branches of the posterior collateral artery directly and constantly supplying the bone between 2,7 cm proximal to the lateral epicondyle. In five cases, combined defects, including bone, were successfully reconstructed with lateral arm flaps, including vascularized bone. © 2003 Wiley-Liss, Inc. MICROSURGERY 23:87,95 2003 [source]

Multilayer Analytic Element Modeling of Radial Collector Wells

GROUND WATER, Issue 6 2005
Mark Bakker
A new multilayer approach is presented for the modeling of ground water flow to radial collector wells. The approach allows for the inclusion of all aspects of the unique boundary condition along the lateral arms of a collector well, including skin effect and internal friction losses due to flow in the arms. The hydraulic conductivity may differ between horizontal layers within the aquifer, and vertical anisotropy can be taken into account. The approach is based on the multilayer analytic element method, such that regional flow and local three-dimensional detail may be simulated simultaneously and accurately within one regional model. Horizontal flow inside a layer is computed analytically, while vertical flow is approximated with a standard finite-difference scheme. Results obtained with the proposed approach compare well to results obtained with three-dimensional analytic element solutions for flow in unconfined aquifers. The presented approach may be applied to predict the yield of a collector well in a regional setting and to compute the origin and residence time, and thus the quality, of water pumped by the collector well. As an example, the addition of three lateral arms to a collector well that already has three laterals is investigated. The new arms are added at an elevation of 2 m above the existing laterals. The yield increase of the collector well is computed as a function of the lengths of the three new arms. [source]

Sperm ultrastructure of the spider crab Maja brachydactyla (Decapoda: Brachyura)

JOURNAL OF MORPHOLOGY, Issue 4 2010
Carles G. Simeó
Abstract This study describes the morphology of the sperm cell of Maja brachydactyla, with emphasis on localizing actin and tubulin. The spermatozoon of M. brachydactyla is similar in appearance and organization to other brachyuran spermatozoa. The spermatozoon is a globular cell composed of a central acrosome, which is surrounded by a thin layer of cytoplasm and a cup-shaped nucleus with four radiating lateral arms. The acrosome is a subspheroidal vesicle composed of three concentric zones surrounded by a capsule. The acrosome is apically covered by an operculum. The perforatorium penetrates the center of the acrosome and has granular material partially composed of actin. The cytoplasm contains one centriole in the subacrosomal region. A cytoplasmic ring encircles the acrosome in the subapical region of the cell and contains the structures-organelles complex (SO-complex), which is composed of a membrane system, mitochondria with few cristae, and microtubules. In the nucleus, slightly condensed chromatin extends along the lateral arms, in which no microtubules have been observed. Chromatin fibers aggregate in certain areas and are often associated with the SO-complex. During the acrosomal reaction, the acrosome could provide support for the penetration of the sperm nucleus, the SO-complex could serve as an anchor point for chromatin, and the lateral arms could play an important role triggering the acrosomal reaction, while slightly decondensed chromatin may be necessary for the deformation of the nucleus. J. Morphol., 2010. © 2009 Wiley-Liss, Inc. [source]