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Methane production from enteric fermentation in cattle is one of the major sources of anthropogenic greenhouse gas emission in the United States and worldwide. National estimates of methane emissions rely on mathematical models such as the one recommended by the Intergovernmental Panel for Climate Change (IPCC). Models used for prediction of methane(More)
STUDY DESIGN This is a prospective randomized and controlled study, approved by the local ethical committee of Saarland (Germany). OBJECTIVE The aim of the current study was to analyze segmental motion following artificial disc replacement using disc prosthesis over 1 year. A second aim was to compare both segmental motion as well as clinical result to(More)
The subchondral bone is involved in a variety of diseases affecting both the articular cartilage and bone. Osteochondral defects in distinct locations and of variable sizes are the final results of different etiologies. These include traumatic osteochondral defects, osteochondritis dissecans, osteonecrosis, and osteoarthritis. Traumatic osteochondral(More)
STUDY DESIGN Prospective, randomized and controlled clinical and radiological study. OBJECTIVE The aim of this study was to assess the segmental kinematics and clinical outcome of disc replacement with ProDisc C versus anterior cervical discectomy and fusion (ACDF) for monosegmental disease 3 years after surgery. SUMMARY OF BACKGROUND DATA Anterior(More)
The review provides an overview of the causes of failure and the many different aetiologies of a painful primary total knee arthroplasty (TKA). They can be classified into extra- and intraarticular disorders, the latter being divided into biological and mechanical origins. Whereas biological aetiologies like infections have remained stable over time, other(More)
HYPOTHESIS Oral and intra-articular injections of cortisone will lead to significant improvement and comparable results in the treatment of adhesive capsulitis of the shoulder. MATERIALS AND METHODS In a prospective randomized evaluation, 40 patients with idiopathic adhesive capsulitis of the shoulder were treated with an oral corticoid treatment regimen(More)
BACKGROUND Double-row repair is suggested to have superior biomechanical properties in rotator cuff reconstruction compared with single-row repair. However, double-row rotator cuff repair is frequently compared with simple suture repair and not with modified suture configurations. HYPOTHESIS Single-row rotator cuff repairs with modified suture(More)
To perform an open-wedge high-tibial osteotomy (HTO), the medial proximal tibia is frequently exposed by partial distal release of the overlying insertion of the medial collateral ligament (MCL). Biomechanically, any release of the MCL can increase knee laxity when valgus stress is applied. Clinically however, post-surgical valgus instability following HTO(More)
Little is known about the etiology of postarthroscopic osteonecrosis of the knee. Its prevalence is probably very low. The most important differential diagnosis is pre-existing and undiagnosed early-stage spontaneous osteonecrosis of the knee. From the medicolegal point of view, orthopaedic surgeons need to be aware of the diagnostic pitfalls in(More)
Arthroscopic techniques still represent the treatment of choice in osteochondral lesions of the talus (OLT). Open techniques may be used as an alternative or may be complementary to arthroscopic treatments. They are especially indicated in cases of large osteochondral lesions, difficult localisations and in cases of recurrent interventions. In addition to(More)