Primary and Revision Hip Replacement. A University Hospital Database and Registry Study

Large-headed total hip arthroplasty (THA) and hip resurfacing arthroplasty (HRA) with metal-on-metal (MoM) bearings became popular during the last decade. Recently, it has become evident that the large-head MoM hip implants are associated with increased revision rates despite their theoretical advantages. The purpose of this study was to evaluate the early results of primary MoM hip replacements and of acetabular revisions. I analyzed retrospectively the results of four MoM implant designs and the survival rate of acetabular revisions with impaction bone grafting, as documented in the Turku University Hospital database. Further, I evaluated the correlation between femoral head size and dislocation rate, and used the Finnish Arthroplasty Register data to compare the survival of three large-head MoM THAs to analogous HRAs. The early results for the Magnum M2A–ReCap THA were good. A larger head size decreased the risk of dislocation. Articular surface replacement (ASR) THA yielded inferior results compared to analogous HRA. For two other designs the results were similar. The R3–Synergy THA yielded inferior results compared to the reference implants. The survival of acetabular reconstructions with impaction bone grafting was inferior compared to previous reports. In conclusion, the early results of the Biomet ReCap–Magnum design were promising, and large head sizes decreased the dislocation rate. The survival of different MoM hip implant designs varied. The survival of new designs and techniques may be inferior to those reported by the clinics where implants are developed. An important caveat is that early promising results of new devices may rapidly worsen. New implants need to be introduced in a controlled fashion to the market; here, arthroplasty registers are a valuable tool that needs to be used.

Foreign Operation Mode Strategies of Finnish Companies in Russia

The object of this study was to examine foreign operation mode strategies used by Finnish companies in Russia. Thus, it was necessary to understand how Finnish companies have used foreign operation modes and which factors have influenced on their foreign operation mode strategies in Russia. Moreover, the purpose was also to find out that have Finnish companies switched, stretched or combined their foreign operation modes. The study's empirical part was conducted as a semi structured qualitative within-case and cross-case analysis of seven case companies that are selected to represent different industries. There are five Finnish LSEs and two Finnish SMEs as case companies. The results of this study indicated that Finnish companies have mainly used exporting as their initial entry mode to the Russian market. After they had gained understanding and experience of the Russian market, they switched from non-equity and simple foreign operation modes to more challenging and equity demanding foreign operation modes, and established wholly owned operations.

The dominions of the Czar of Russia Alba or Great Duke of Moscovia in which are the Dukedoms of Moscow, Wolodimer, Rezan, Worotin, Novogorod-Sewierski, Czernihow, Smolensko, Reschow, Twer, Novogorod-Weliki, Biele Jezora, Wologda, .. /

1 kartta :, käsinvär. ;, 57 x 88 cm, lehti 62,5 x 92,5 cm

La Lapponia Russa coi Governi di Olonechoi, Carelia, Bielozero, ed Ingria Nella Russia Europea di nuova projezione

1 kartta :, käsinvär. ;, 40,5 x 31 cm, lehti 47,7 x 38,8 cm

Schonlandia XIII : nova tabula : Nortue [i. e. Nortuegia], Gothia, Suecia, Rusia [i. e. Russia] Alba

Julkaisussa: Geographia universalis, vetus et nova, complectens Claudii Ptolemaei Alexandrini enarrationis libros VIII

Suecia, Norvegia, Russia Moscovitica 1699

Julkaisussa: Tabellae geographicae

Carta particolare del Mare Settentrionale di Moscovia è Russia con iistreto [i.e. istreto] di Wigats è finisce con il fiume Oby : la longitudine comincia da l'isola di Pico d'Asores [i.e. Pico Azores] : di Europa carta XXXXVII

Julkaisussa: Dell' arcano del mare di Ruberto Dudleo ... parte seconda del tomo terzo contenente il libro sesto. Vol III

Anthonius Wied candido lectori S. Moscovia quae & Alba Russia non contenta Europae Sarmatiae parte ... vale ex Wilda Lihuaniae anno 1555

Nimeke- ja tekijätiedot nimiönkehyksissä

A map of Russia

Kartta kuuluu A. E. Nordenskiöldin kokoelmaan

Travels in Russia - Vol. 1

Illustrated by engravings

Travels in Russia - Vol. 2

Illustrated by engravings