Perspektiven der Nutzung von Methanhydraten als Energieträger – Eine Bestandsaufnahme

Methane hydrates are the largest existing carbon resource, and their broad geographic distribution, especially in comparison to oil and conventional gas, make them a promising future source of energy. On the other hand, there is a danger of forcing the greenhouse effect in the event of a release of methane in the atmosphere as well as causing a destabilisation of the oceanic sediments. Also the technical difficulties in the extraction of methane are not yet fully resolved. Nevertheless, the research on methane hydrates has been forced both based on political as well as economic considerations in recent years and methane hydrates have practical advantages, which make them a noteworthy transitional solution on the way to a renewable energy based future energy supply. The knowledge of the potentials and risks of methane hydrates, however, is still poor; especially in the German-speaking public and policy. This deficiency will be solved by a focused analysis of the current state of research and an outlook, based on the most important findings.

Tension in Peripheral Nerve Suture

Avoiding suture tension in peripheral nerve coaptation seems to be a clinical dogma since 30 years, although experimental data are weak and clinical practice shows good functional outcome after peripheral nerve repair by direct coaptation under “reasonable” tension, defined by local anatomic feasibility and the use of specific suture material. In this article, we focus on the microsurgical technique of nerve stump coaptation and the distribution of tension through epineural sutures with various suture materials; we also analyze the impact on the different nerve tissue layers, the limit of this approach and its combination with other tissue releasing techniques like paraneurolysis, adjacent joint flexion, or bone shortening

LE PIED DE MADURA

SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Canal pressures before, during, and after endoscopic release for idiopathic carpal tunnel syndrome

A special transducer was used to measure in situ carpal tunnel pressures in 20 patients who had surgery for idiopathic carpal tunnel syndrome (CTS) by one-portal endoscopic section of the flexor retinaculum. Pressures were elevated initially. The pressures were maximal (mean, 93 mm Hg) with full passive wrist extension. Peaks of high pressures, on average 97 mm Hg, were recorded with the Agee (MicroAire, Charlottesville, VA) endoscopic device in the canal. Release of the endoscopic flexor retinaculum resulted in a marked decrease of the pressures. Copyright © 2002 by the American Society for Surgery of the Hand.SCOPUS: ar.jinfo:eu-repo/semantics/publishe

Transmission des forces au niveau du poignet: application d'une technique analytique de calcul des pressions articulaires de contact

Doctorat en sciences médicalesinfo:eu-repo/semantics/nonPublishe

Advances in objective assessment of hand function and outcome: Preface

SCOPUS: ed.jinfo:eu-repo/semantics/publishe

Biomecanique du coude normal et apres arthroplastie totale semi-contrainte

The elbow possesses two degrees of freedom: flexion-extension and pronation-supination. The axis of flexion-extension joins the centers of the capitellum and of the trochlea. The axis of pronation-supination passes through the head of the radius, and through the distal ulnar dome. The functional elbow mobilities include 100 degrees of elbow flexion (30 to 130°) and 100 degrees of forearm rotation (50°of pronation and 50°of supination). The elbow is submitted to high articular contact forces. The joint stability depends on the articular surfaces, capsuloligamentous restraints and dynamic muscular contractions. As a practical application of this fundamental knowledge, an experimental study of the effects of total elbow arthroplasty on joint stability and muscle moment arms is reported, insisting on the deleterious effects of implant malpositioning.SCOPUS: cp.jinfo:eu-repo/semantics/publishe

Revue Medicale de Bruxelles: Editorial

SCOPUS: ed.jinfo:eu-repo/semantics/publishe

Post-traumatic or postoperative upper extremity algodystrophy

This article presents a review of the presentations and discussions held during an international symposium organized in April 1996 in Belgium on postoperative or post-traumatic upper extremity algodystrophy. Algodystrophy was defined as a local or regional pain syndrome with dysesthesiae, frequent allodynia, vasomotor disturbances, and dystrophy changes involving all tissues. New concepts on physiopathology (including possible causes as neurogenic inflammation or stenosis of the subclavian vein), imaging, prevention and treatment of the affection are discussed.SCOPUS: re.jinfo:eu-repo/semantics/publishe

Transplantation de main et allotransplantations vascularisées composites en Orthopédie-Traumatologie

SCOPUS: re.jinfo:eu-repo/semantics/publishe