PurposeAlthough single-radius (SR) designs have a theoretical advantage in quadriceps recovery following total knee arthroplasty (TKA), there has been a paucity of objective evaluation studies.Materials and MethodsOne hundred and twenty minimally invasive TKAs were prospectively randomized by a single surgeon into 2 groups: SR design TKA group and multi-radius design TKA group. Quadriceps force and power were assessed using a dynamometer, and clinical data were investigated preoperatively and 6 weeks, 3 months, 6 months and 1 year postoperatively.ResultsThere were no differences between two groups in quadriceps recovery and clinical results throughout the follow-up period. Furthermore, the proportion of patients whose postoperative quadriceps force and power reached preoperative level was similar in both groups.ConclusionsFemoral component design itself would not significantly influence quadriceps recovery after TKA.

PurposeThe purpose of this study was to evaluate the results of the treatment of Schatzker type V and VI tibial plateau fractures using a midline longitudinal incision and dual-plate fixation.Materials and MethodsTen patients with Schatzker type V and VI tibial plateau fractures treated with a midline longitudinal incision and dual plating were analyzed. The patients were followed for a minimum of one year. Clinical outcomes were evaluated using range of motion, visual analogue scale (VAS) and Knee Society Score. Radiological outcomes were evaluated using the bony union time, medial proximal tibial angle (MPTA) and posterior proximal tibial angle (PPTA).ResultsThe mean VAS score was 2.2 points, and the mean Knee Society function score was 85 points at the final follow-up. The mean flexion contracture was 2.5° and the mean further flexion was 125°. It took an average of 4 months until bony union occurred. The mean MPTA and PPTA were 90.5° and 4.4°, respectively. There was one case of delayed wound healing, but no other complications were observed.ConclusionsThe treatment of Schatzker type V and VI tibial plateau fractures with a midline longitudinal incision and dual-plate fixation resulted in satisfactory clinical and radiological outcomes. This can be an option when treating Schatzker type V and VI tibial plateau fractures.

INTRODUCTIONA collaborative network (CN) is 'an alliance constituted by a variety of entities (e.g., organizations and people) that are largely autonomous, geographically distributed, and heterogeneous, but that collaborate to better achieve common or compatible goals, and whose interactions are supported by computer network' (CamarinhaMatos et aI., 2006). Collaborative networked organizations (CNOs) (e.g., virtual organizations, dynamic supply chains) are manifestations ofCN. Recently, lots of CNOs, networked organizations, or joint ventures appear in industry, government, academia, and society (Camarinha-Matos and Afsarmanesh, 2004;Tapia, 2006). In business sense, it comes from digitization or virtualization of business and organizations for agility against increasing competition in (global) markets. In technology sense, it owes to the rapid development and diffusion of ICT including the Internet and web technology. With the advancement of emerging technologies including ubiquitous computing and networking CNOs will be more popular in all around the world soon. 'A reference model is an abstract representation of the entities and relationships involved in a problem space, and it forms the conceptual basis for the development of more concrete models of the space and ultimately implementations, in a computing context' (refer. www.wikipedia.org). Enterprise architecture (EA) is the practice of applying a reference model for describing strategy, business, applications, information/data, technology, and outcomes of an enterprise (e.g., CN or CNO). A modeling language of enterprise architecture (EAML) is a conceptual or logical representation of EA. To build an information system for a CNO, an EA of the CNO needs to be developed based on a reference model or an EA framework; and the EA needs to be implemented into information systems through an EAML.EA frameworks have been developed and applied to many enterprise applications. Examples of EA frameworks include Zachman Framework, GERAM, RM-ODP, Federal Enterprise Architecture, DODAF, TOGAF, Model-Driven Architecture (MDA), etc. EAMLs also have been developed accompanying with EA

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