BACKGROUND AND PURPOSE In Norway, the proportion of revision knee arthroplasties increased from 6.9% in 1994 to 8.5% in 2011. However, there is limited information on the epidemiology and causes of subsequent failure of revision knee arthroplasty. We therefore studied survival rate and determined the modes of failure of aseptic revision total knee arthroplasties. METHOD This study was based o...

OBJECTIVES Few studies have assessed outcomes following non-metal-on-metal hip arthroplasty (non-MoMHA) revision surgery performed for adverse reactions to metal debris (ARMD). We assessed outcomes following non-MoMHA revision surgery performed for ARMD, and identified predictors of re-revision. METHODS We performed a retrospective observational study using data from the National Joint Regist...

OF DISSERTATION Inna Valentinovna Pivkina The Graduate School University of Kentucky 2001 REVISION PROGRAMMING: A KNOWLEDGE REPRESENTATION FORMALISM ABSTRACT OF DISSERTATION A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the University of KentuckyOF DISSERTATION A dissertation submitted in partial fulfillment of the requirements for...

BACKGROUND AND PURPOSE Coating of acetabular revision implants with hydroxyapatite (HA) has been proposed to improve ingrowth and stability. We investigated whether HA coating of revision cups can reduce the risk of any subsequent re-revision. METHODS We studied uncemented cups either with or without HA coating that were used at a primary acetabular revision and registered in the Swedish Hip ...

The AGM postulates ([1]) are for the belief revision (revision by a single belief), and the DP postulates ([2]) are for the iterated revision (revision by a finite sequence of beliefs). Li [3] gave an R-calculus for R-configurations ,   where Δ is a set of literals, and Γ is a finite set of formulas. We shall give two -calculi such that for any consistent set Γ and finite consistent set of fo...

In this paper, we present a general revision model on epistemic states based on plausibility measures proposed by Friedman and Halpern. We propose our revision strategy and give some desirable properties, e.g., the reversible and commutative properties. Moreover, we develop a notion called plausibility kinematics and show that our revision strategy follows plausibility kinematics. Furthermore, ...

The framework of belief revision has been studied for years in the context of logic theories. It has been considered several times for description logics and more recently for aligned ontologies. We consider more generally the problem of revising a network of ontologies: given a set of ontologies connected by alignments, how to evolve them such that they account for new information, i.e., new f...

BACKGROUND AND PURPOSE Revision total hip arthroplasty (THA) due to recurrent dislocations is associated with a high risk of persistent instability. We hypothesized that the use of dual-mobility cups would reduce the risk of re-revision due to dislocation after revision THA. PATIENTS AND METHODS 228 THA cup revisions (in 228 patients) performed due to recurrent dislocations and employing a sp...

This paper investigates belief revision where the underlying logic is that governing Horn clauses. We show that classical (AGM) belief revision doesn’t immediately generalise to the Horn case. In particular, a standard construction based on a total preorder over possible worlds may violate the accepted (AGM) postulates. Conversely, in the obvious extension to the AGM approach, Horn revision fun...

We address the problem of belief revision in (nonmonotonic) logic programming under answer set semantics: given logic programs P and Q, the goal is to determine a program R that corresponds to the revision of P by Q, denoted P ∗ Q. Unlike previous approaches in logic programming, our formal techniques are analogous to those of distance-based belief revision in propositional logic. In developing...