Augmentation with transcortical wiring of an onlay-type prosthesis for a deficient patella during revision total knee arthroplasty.

The management of patellae with a severe bony deficiency during revision total knee arthroplasty is a challenging problem. However, using a technique of augmentation with transcortical wiring of an onlay-type prosthesis allowed the authors to revise a deficient patellae successfully. After making the decision to revise the existing patellar component, the procedure was found to be technically straightforward.

Mechanical axis-derived femoral component rotation in extramedullary total knee arthroplasty: a comparison between femoral transverse axis and transepicondylar axis.

Purpose: Correct rotational alignment of the femoral component is paramount to the success of total knee arthroplasty, but debate continues as to which method is the most reliable. The purpose of this study was to evaluate mechanical axis-derived rotational axis of the femoral component using an extramedullary femoral alignment guide system.

Methods: Between 2009 and 2010, 60 patients (120 knees) underwent simultaneous bilateral total knee arthroplasty.

Systematic analysis of synchronized oscillatory neuronal networks reveals an enrichment for coupled direct and indirect feedback motifs.

Motivation: Synchronized bursting behavior is a remarkable phenomenon in neural dynamics. So, identification of the underlying functional structure is crucial to understand its regulatory mechanism at a system level. On the other hand, we noted that feedback loops (FBLs) are commonly used basic building blocks in engineering circuit design, especially for synchronization, and they have also been considered as important regulatory network motifs in systems biology.

Prognostic factors influencing the functional outcome of total hip arthroplasty for hip infection sequelae.

To investigate factors influencing functional prognosis for patients who have undergone total hip arthroplasty for late sequelae of infective arthritis of the hip, we conducted a retrospective analysis of 75 hips. All patients had had pyogenic or tuberculous infection and later underwent total hip arthroplasty. The average follow-up period was 5.