A radiologic classification of talocalcaneal coalitions based on 3D reconstruction

Talocalcaneal coalitions can be difficult to detect on plain radiographs, despite obvious clinical findings. The purpose of this study is two-fold: (1) to delineate the benefits of thin-cut computed tomography (CT) and 3D reconstructions and (2) to develop a classification scheme for talocalcaneal coalitions that will provide valuable information for surgical planning. From 2005 to 2009, 54 feet (35 patients) with a talocalcaneal coalition were evaluated with thin-cut (1 mm) CT, using multi-planar 2D and 3D reconstructions. The talocalcaneal coalitions were classified into five types based on the cartilaginous or bony nature, location, and facet joint orientation. Bilateral coalitions were found in 22/35 patients. Types I and II were fibrocartilaginous coalitions, which was the most common type, comprising 40.7 and 16.7% of the coalitions, respectively. Of the patients, 14.8% had a shingled Type III coalition, while 11.1% of the feet examined had a complete bony coalition (Type IV). Small peripheral posterior bony coalitions (Type V), which are heretofore not described, were found in 16.7% of feet. CT scans can provide valuable information regarding the bony or cartilaginous nature of coalitions, as well as the facet orientation, which is helpful in diagnosis and treatment. In this study, the 2D and 3D reconstructions revealed previously unreported peripheral posterior bony coalitions (Type V), as well as coalitions that are in the same plane as the standard CT cuts or Harris view radiographs (Type I). The CT scan also improved the crucial pre-operative planning of the resection in the more complex vertical and combined horizontal and vertical fibrocartilaginous coalitions (Type I and II). Additionally, the complete bony coalitions (Type IV) can be sized accurately, which is helpful in decision-making on the resectability of the coalition

Spinal supports and physical therapy in patients with low back pain: a case series

The association of low back pain with physical workload in seated workstation related jobs has been debated and remains controversial. Clinical studies eliciting the natural history of the disease in this emerging population are insufficient to make definitive conclusions. We report four consecutive cases of patients suffering from low back pain presenting to a tertiary spine clinic with severe non-specific low back pain. Two patients as age-matched controls with persistent low back pain were followed for 6 months after receiving conventional treatment. In comparison, two test patients received parallel conventional treatment along with orthopaedic full spinal supports as an additional treatment modality. Outcomes analysed demonstrate the efficacy of orthopaedic full spinal supports for treating low back pain

Why Do People Sometimes Wear an Anonymous Mask? Motivations for Seeking Anonymity Online

Anonymous environments are more accessible than ever. As such, it is important to understand not only how anonymity can change human behavior but also why people are motivated to seek anonymity in online spaces. In four studies, we investigated differences in motivations for seeking anonymity online and their associations with related dispositional factors and online behavior. We found that some people were motivated to seek anonymity to self-express or behave toxically. Both motivations to seek anonymity were associated with low self-concept clarity and high Machiavellianism but differed in their relation to traits such as self-consciousness and psychopathy. Further analyses suggested that people selectively engage in behaviors in anonymous online environments, in line with the specific gratifications they seek through anonymity. We conclude that people seek anonymity to pursue self- or other-related goals that are otherwise more difficult or costly to pursue when identifiable.</p

A radiologic classification of talocalcaneal coalitions based on 3D reconstruction

Talocalcaneal coalitions can be difficult to detect on plain radiographs, despite obvious clinical findings. The purpose of this study is two-fold: (1) to delineate the benefits of thin-cut computed tomography (CT) and 3D reconstructions and (2) to develop a classification scheme for talocalcaneal coalitions that will provide valuable information for surgical planning. From 2005 to 2009, 54 feet (35 patients) with a talocalcaneal coalition were evaluated with thin-cut (1 mm) CT, using multi-planar 2D and 3D reconstructions. The talocalcaneal coalitions were classified into five types based on the cartilaginous or bony nature, location, and facet joint orientation. Bilateral coalitions were found in 22/35 patients. Types I and II were fibrocartilaginous coalitions, which was the most common type, comprising 40.7 and 16.7% of the coalitions, respectively. Of the patients, 14.8% had a shingled Type III coalition, while 11.1% of the feet examined had a complete bony coalition (Type IV). Small peripheral posterior bony coalitions (Type V), which are heretofore not described, were found in 16.7% of feet. CT scans can provide valuable information regarding the bony or cartilaginous nature of coalitions, as well as the facet orientation, which is helpful in diagnosis and treatment. In this study, the 2D and 3D reconstructions revealed previously unreported peripheral posterior bony coalitions (Type V), as well as coalitions that are in the same plane as the standard CT cuts or Harris view radiographs (Type I). The CT scan also improved the crucial pre-operative planning of the resection in the more complex vertical and combined horizontal and vertical fibrocartilaginous coalitions (Type I and II). Additionally, the complete bony coalitions (Type IV) can be sized accurately, which is helpful in decision-making on the resectability of the coalition

sj-docx-2-psp-10.1177_01461672231210465 – Supplemental material for Why Do People Sometimes Wear an Anonymous Mask? Motivations for Seeking Anonymity Online

Supplemental material, sj-docx-2-psp-10.1177_01461672231210465 for Why Do People Sometimes Wear an Anonymous Mask? Motivations for Seeking Anonymity Online by Lewis Nitschinsk, Stephanie J. Tobin, Deanna Varley and Eric J. Vanman in Personality and Social Psychology Bulletin</p

sj-docx-1-psp-10.1177_01461672231210465 – Supplemental material for Why Do People Sometimes Wear an Anonymous Mask? Motivations for Seeking Anonymity Online

Supplemental material, sj-docx-1-psp-10.1177_01461672231210465 for Why Do People Sometimes Wear an Anonymous Mask? Motivations for Seeking Anonymity Online by Lewis Nitschinsk, Stephanie J. Tobin, Deanna Varley and Eric J. Vanman in Personality and Social Psychology Bulletin</p