Effect of glenoid concavity loss on shoulder stability- a case report in a professional wrestler

Background Current glenoid defect measurement techniques only quantify bone loss in terms of defect diameter or surface. However, the glenoid depth plays an important role in shoulder stabilization by means of concavity compression. Case presentation We present a case of a professional wrestler who suffered from anterior shoulder instability after sustaining a bony Bankart lesion without loss of glenoid surface area but flattening of the concavity due to medialization of the fragment. The patient’s glenoid concavity was reconstructed arthroscopically by reduction and percutaneous screw fixation of the bony fragment along with a capsulo-ligamentous shift. Changes of the glenoid concavity with according alterations in the Bony Shoulder Stability Ratio (BSSR) were analyzed on pre-op, post-op, and follow-up CT scans. Postoperative CT scans revealed a deepened concavity (3.3 mm) and improved BSSR (46.1 %) compared to pre-op scans (0.7 mm; 11.3 %). Follow-up CT scans showed a slight remodeling of the glenoid concavity (3.2 mm) with steady BSSR (44.7 %). Conclusion This case shows that the passive stabilizing effect of the glenoid can be compromised by loss of concavity despite the absence of loss of articular surface. Therefore, addressing the concavity loss and resulting reduction of the BSSR is recommended in these cases. Bony Bankart repair was successful in restoring the BSSR of the patients shoulder as determined by mathematical calculations based on CT scans

Evaluating Workflow Management Systems

In this paper we describe a project focusing on the evaluation of workflow management systems for a large Austrian bank. In the first part we establish a catalogue of evaluation criteria. It summarizes the huge amount of criteria into smaller classes (criteria categories) and orders the classes in a semantically structured directory. In the second part, we describe a tool implementing the evaluation framework. A database stores the criteria classes along with associated questions as well as the appropriate answers for a set of workflow products. The tool allows to extend the database as well as to perform a customized evaluation process. In the third part of the paper, we describe some of the results of using the tool for evaluating workflow management systems for the First Austrian Savings Bank. 1. Introduction Observing the market of Workflow-ManagementSystems (WfMS), it will quickly be noticed that the market is young and promising, for this reason steadily growing and changing ver..