A cost-utility analysis comparing the cost-effectiveness of simultaneous and staged bilateral total knee arthroplasty.

Background: The safety and efficacy of simultaneous or staged bilateral total knee arthroplasty have long been debated among orthopaedic surgeons. Advocates for simultaneous bilateral total knee arthroplasty posit that the benefits of decreased costs and recovery time, with no difference in functional outcomes, outweigh the economic costs of potential complications. The purpose of the study was to conduct a cost-utility analysis comparing simultaneous bilateral total knee arthroplasty with staged bilateral total knee arthroplasty.

MRI issues for ballistic objects: information obtained at 1.5-, 3- and 7-Tesla.

Background Context: Few studies exist for magnetic resonance imaging (MRI) issues and ballistics, and there are no studies addressing movement, heating, and artifacts associated with ballistics at 3-tesla (T). Movement because of magnetic field interactions and radiofrequency (RF)-induced heating of retained bullets may injure nearby critical structures. Artifacts may also interfere with the diagnostic use of MRI.

Comparison of pediatric outcomes data collection instrument scores and range of motion before and after shoulder tendon transfers for children with brachial plexus birth palsy.

Background: Children with brachial plexus birth palsy (BPBP) may undergo shoulder external rotation tendon transfers (ERTT) to improve function. In terms of outcome measurements, and according to the World Health Organization International Classification of Functioning, Disability, and Health model, ERTT reduces impairment as measured by range of motion (ROM), but has not been shown to improve activity and participation. Furthermore, correlation between these outcome measures has not been established.