The increase in the number of shoulder arthroplasties has also created a paradoxical increase in the number of revision procedures. These revision surgeries can be complicated by well-fixed humeral components that require removal. In this article, we report a representative revision arthroplasty that involved a novel technique, vertical humeral osteotomy, which allowed for safe and effective hu...

We present a new approach to revising extended programs, based on the coherence theory initially advocated by Gardenfors for belief revision. We deene the skeptical and credulous coherence semantics and show that both semantics can be characterized in terms of the xpoint semantics of a revised program using a simple program revision technique. Semantical properties and advantages of the propose...

BACKGROUND Most research on failure leading to revision total hip arthroplasty (THA) is reported from single centers. We searched PubMed between January 2000 and August 2010 to identify population- or community-based studies evaluating ten-year revision risks. We report ten-year revision risk using the Kaplan-Meier method, stratifying by age and fixation technique. RESULTS Thirteen papers met...

AIM Failed cranioplasty attempts may lead to numerous complications in a broad spectrum including cosmetic problems, infection, neurological deterioration and even death. Selection of the most appropriate surgical technique for second and further surgical attempts for these patients still remains a debate. We aimed to share our experience and technical pitfalls on management of failed craniopla...

BACKGROUND AND PURPOSE Very little has been published on the outcome of femoral cemented revisions using a third-generation cementing technique. We report the medium-term outcome of a consecutive series of patients treated in this way. PATIENTS AND METHODS This study included 92 consecutive cemented femoral revisions performed in our department with a third-generation cementing technique and ...

STUDY DESIGN Biomechanical analysis. OBJECTIVE To determine the relative strengths of 2 different forms of revision spinal instrumentation using a validated, constant load, cyclic testing mechanism. SUMMARY OF BACKGROUND DATA Spinal fusion with instrumentation procedures are on the rise. As such, so are revision procedures. A few studies have looked at revision instrumentation techniques. B...