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35th European Photovoltaic Solar Energy Conference and Exhibition; 1778-1781, The paper is focused on state-of the-art methods for local PV yield estimation in middle and very short time horizon. Both numerical weather prediction as well as statistical approaches are discussed and the accuracy for a chosen place is compared. The developed approach for data acquisition of irradiance sensors is discussed together with the method of image processing. In the end general statements are made based on accuracy and suitability of each prediction method.

Fragestellung: Die Azellularisierung von Sehnengewebe mittels verschiedener Substanzen ist eine neue Möglichkeit für das Tissue Engineering des vorderen Kreuzbandes. In vitro Testungen zeigten dabei gute biomechanische Eigenschaften der Scaffolds aber eine in vivo Bestätigung im Tiermodel[for full text, please go to the a.m. URL], Deutscher Kongress für Orthopädie und Unfallchirurgie; 73. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie, 95. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie, 50. Tagung des Berufsverbandes der Fachärzte für Orthopädie

A retrospective study was performed focusing on operative treatment after combined anterior cruciate ligament (ACL)/posterior cruciate ligament (PCL) injuries. The operative treatment included the preservation of one or both cruciate ligaments. Twenty-eight patients, average age 30 years (range: 12-55 years), were evaluated 5.4 years (range: 1-14 years) postoperatively. Twenty-two operations were performed in patients with acute injuries (30 days after trauma) and 6 operations in patients with chronic instabilities (30 days after trauma). Both cruciate ligaments were preserved by suture or refixation in 16 patients. Suture of one and reconstruction of the other cruciate ligament with autologous tendon graft was performed in 12 cases. In addition, 61 procedures (meniscal suture/resection, medial/lateral reconstruction, tendon suture, and open reduction and internal fixation were performed. Postoperative treatment included continuous passive motion and protected weight bearing. Eleven (27% acute, 83% chronic) patients required revision (ACL/PCL reconstruction, osteotomy, and meniscal repair). At follow-up, 43% of the patients were very satisfied and 46% were satisfied. Seventy-one percent (89% preinjury) of the patients were able to maintain intensive and moderate International Knee Documentation Committee (IKDC) activity levels. The IKDC evaluation of the patients (acute %/chronic cases %) was graded for symptoms: A 39% (45/17), B 35% (27/67), C 15% (18/0), and D 11% (9/17); for range of motion: A 42% (36/67), B 42% (50/17), C 16% (14/17), and D 0%; and for ligaments: A 21% (18/17), B 33% (45/0), C 42% (32/83), and D 4% (5/0). Radiographic findings were A 18%, B 41%, and C 41%. Primary repair of acute injuries was superior to the delayed repair of chronic instabilities. Preservation of cruciate ligaments in acute combined ACL/PCL tears results in a satisfying knee function despite distinct residual ligament instability. Although suture of the cruciate ligaments in open technique is a therapeutic option in acute multiligamentous knee injuries, it is not recommended for the treatment of chronic instabilities.