Recovery of the joint space in degenerative hip disease after osteotomy has been described on several occasions and the literature includes reports by Adam and Spence (1958), Nissen (1963), and Harris and Kirwan (1964), but there is much less documentation on spontaneous recovery of the joint space, which forms the subject of this paper. Danielson (1964) reported real or apparent regression of ...

AIM To develop and demonstrate the efficacy of a computed tomography arthrography (CTA) protocol for the hip that enables accurate three-dimensional reconstructions of cartilage and excellent visualization of the acetabular labrum. MATERIALS AND METHODS Ninety-three subjects were imaged (104 scans); 68 subjects with abnormal anatomy, 11 patients after periacetabular osteotomy surgery, and 25 ...

In articulated tracking, one is concerned with estimating the pose of a person in every frame of a film. This pose is most often represented as a kinematic skeleton where the joint angles are the degrees of freedom. Least-committed predictive models are then phrased as a Brownian motion in joint angle space. However, the metric of the joint angle space is rather unintuitive as it ignores both b...

In this paper, we propose a new framework for joint encryption encoding scheme based on polar codes, namely efficient and secure joint secret key encryption channel coding scheme. The issue of using new coding structure, i.e. polar codes in Rao-Nam (RN) like schemes is addressed. Cryptanalysis methods show that the proposed scheme has an acceptable level of security with a relatively smaller ke...

1063-4584/$ – see front matter 2011 Osteoarthritis doi:10.1016/j.joca.2011.10.008 The challenge of disease definition in osteoarthritis (OA) continues to grow. As described by Pereira et al., in a recent issue of Osteoarthritis and Cartilage (OAC), there are substantial differences in prevalence and incidence estimates when defining OA by radiographic changes alone, as symptomatic OA (requiring...