Lokale Kooperation öffentlicher Bibliotheken unterschiedlicher Träger in Bezug auf ein Konzept für einen gemeinsamen Online-Katalog am Beispiel der ÖBs in Willich

Dargestellt wird ein Konzept für eine lokale Kooperation kleiner öffentlicher Bibliotheken verschiedener Träger mit einem gemeinsamen WWW-OPAC. Das Konzept wird für eine verbundweite Recherche mit systematischer Sacherschließung durch eine Konkordanzklassifikation, für die Organisation eines lokalen Leihverkehrs und für die Organisation einer teilweise koordinierten Erwerbung entwickelt. Den Rahmen bilden die Funktionen und Leitbilder dieser Bibliotheken und mögliche Modelle für eine Kooperationsarchitektur, für die Software auf dem Markt angeboten wird

Open Access meets Saxony!

Open Access steht für den freien Zugang zu wissenschaftlichen Publikationen über das Internet. Die Open-Access-Tage, kurz OA-Tage, sind die zentrale jährliche Konferenz zu diesem Thema im deutschsprachigen Raum. In diesem Jahr findet die Tagung erstmals in Dresden statt

Open Access meets Saxony!

Open Access steht für den freien Zugang zu wissenschaftlichen Publikationen über das Internet. Die Open-Access-Tage, kurz OA-Tage, sind die zentrale jährliche Konferenz zu diesem Thema im deutschsprachigen Raum. In diesem Jahr findet die Tagung erstmals in Dresden statt

Measuring standing hindfoot alignment: reliability of different approaches in conventional x-ray and cone-beam CT

Introduction!#!Currently there is no consensus how hindfoot alignment (HA) should be assessed in CBCT scans. The aim of this study is to investigate how the reliability is affected by the anatomical structures chosen for the measurement.!##!Materials and methods!#!Datasets consisting of a Saltzman View (SV) and a CBCT of the same foot were acquired prospectively and independently assessed by five raters regarding HA. In SVs the HA was estimated as follows: transversal shift between tibial shaft axis and heel contact point (1); angle between tibial shaft axis and a tangent at the medial (2) or lateral (3) calcaneal wall. In CBCT the HA was estimated as follows: transversal shift between the centre of the talus and the heel contact point (4); angle between a perpendicular line and a tangent at the medial (5) or lateral (6) calcaneal wall; angle between the distal tibial surface and a tangent at the medial calcaneal wall (7). Intraclass correlation coefficients (ICC) were calculated to assess inter-rater reliability. A linear regression was performed to compare the different measurement regarding their correlation.!##!Results!#!32 patients were included in the study. The ICCs for the measurements 1-7 were as follows: (1) 0.924 [95% CI 0.876-0.959] (2) 0.533 [95% CI 0.377-0.692], (3) 0.553 [95% CI 0.399-0.708], (4) 0.930 [95% CI 0.866-0.962], (5) 0.00 [95% CI - 0.111 to 0.096], (6) 0.00 [95% CI - 0.103 to 0.111], (7) 0.152 [95% CI 0.027-0.330]. A linear regression between measurement 1 and 4 showed a correlation of 0.272 (p = 0.036).!##!Conclusions!#!It could be shown that reliability of measuring HA depends on the investigated anatomical structure. Placing a tangent along the calcaneus (2, 3, 5, 6, 7) was shown to be unreliable, whereas determining the weight-bearing heel point (1, 4) appeared to be a reliable approach. The correlation of the measurement workflows is significant (p = 0.036), but too weak (0.272) to be used clinically

Patellofemoral cartilage defects are acceptable in patients undergoing high tibial osteotomy for medial osteoarthritis of the knee

Background: Patients suffering cartilage defects of the medial compartment with underlying varus deformity do benefit from high tibial osteotomy (HTO) even in the long term. Nonetheless, kinematic and geometric changes especially in the patellofemoral joint have been described. Purpose of the present study was to evaluate the influence of patellofemoral cartilage defects detected during the diagnostic arthroscopy and their influence on HTO's postoperative outcome. Methods: Ninety patients with a mean follow-up of 10.08 +/- 2.33 years after surgery were included. Patients were divided into four groups according to their cartilage status in the patellofemoral joint (A= no defects, B = isolated lesions of the patella, C = isolated lesions of the trochlea, D = kissing lesions). Functional outcome was evaluated before surgery and about ten years thereafter by relying on the IKDC, Lysholm, and KOOS scores. Radiological parameters were assessed pre- and six weeks postoperatively. Results: In groups A to D, the HTO led to significant patellar distalisation in the sagittal view, with the mean indices remaining at or above the limit to a patella baja. All patients in all groups profited significantly from HTO (higher Lysholm score, lower VAS p< 0.001), patients in group D had the lowest outcome scores. Patella height negatively influenced outcome scores in group C (Blackburne-Peel-Index-VAS p= 0.033) and D (Caton-Deschamps-Index-Tegner p= 0.018), a larger valgus correction was associated with lower outcome scores in group D (Lysholm p= 0.044, KOOSpain 0.028, KOOSQOL p= 0.004). Conclusion: Long-term results of HTO for varus medial compartment osteoarthritis remain good to excellent even in the presence of patellofemoral defects. Overcorrection should be avoided. Distal biplanar HTO should be considered for patients presenting trochlear or kissing lesions of the patellofemoral joint