High-quality dietary protein (essential amino acids matched to reproductive needs) partially breaks the lifespan and reproduction trade-off in lubber grasshoppers.

Finding interventions to break the trade-off between reproduction and lifespan can provide insight into physiological limitations of animals. Effects of dietary protein quality on the trade-off are currently unclear, but clarity could lead to better designed diets that match animal needs. Dietary amino acid blends matching yolk proteins support reproduction and extend lifespan in fruit flies.

Two-Year Survivorship and Patient-Reported Outcomes of a Prospectively Enrolled Cohort of INFINITY Total Ankle Arthroplasties.

Background: The INFINITY total ankle implant is a widely and successfully used option for total ankle arthroplasty. The purpose of this study is to assess the 2-year survivorship, complication rates, patient-reported outcomes, and radiologic findings of prospectively enrolled patients undergoing a fixed-bearing total ankle arthroplasty (TAA). This study sought to determine if factors such as traditional vs patient-specific instrumentation, preoperative degree of arthritis, deformity, or etiology of arthritis impact surgical or clinical outcomes.

The effects of dietary amino acid balance on post-embryonic development in a lubber grasshopper.

Effects of dietary protein quality on insect development (not just growth) are unclear. Dietary amino acid blends matching yolk proteins support reproduction and juvenile development in Drosophila melanogaster. We matched amino acids to vitellogenin and tested development of juvenile male lubber grasshoppers, which do not produce vitellogenin.

Injury Surveillance and Evaluation of Medical Services Utilized During the 2016 Track and Field Olympic Trials.

Background: Injury surveillance systems have been implemented at world championships, yet no previous work has determined the burden of injuries during the United States Track and Field Olympic Trials. Additionally, the type of medical service providers utilized throughout the meet has not been reported, leaving it unclear whether optimal staffing needs are being met.

Purpose: To describe the incidence of injuries presenting to the medical team at the 2016 US Track and Field Olympic Trials (Eugene, Oregon) by event type and competitor demographics.

Minimal Preoperative Degenerative Arthritis May Not Predict Poor TKA Outcome.

Although most orthopedic surgeons presume that patients with more severe degenerative osteoarthritis are better candidates for total knee arthroplasty (TKA), few data have compared outcomes based on the extent of radiographic osteoarthritis. The authors tested the hypothesis that patients with minimal radiographic osteoarthritis would have worse outcomes compared with a matched cohort with severe osteoarthritis. The authors identified 29 patients (31 knees) with minimal degenerative changes who underwent TKA between 2000 and 2004.

Peroneal tendon displacement accompanying intra-articular calcaneal fractures.

Background: Peroneal tendon displacement (subluxation or dislocation) accompanying an intra-articular calcaneal fracture is often undetected and under-treated. The goals of this study were to determine (1) the prevalence of peroneal tendon displacement accompanying intra-articular calcaneal fractures, (2) the association of tendon displacement with fracture classifications, (3) the association of tendon displacement with heel width, and (4) the rate of missed diagnosis of the tendon displacement on radiographs and computed tomography (CT) scans and the resulting treatment rate.

Methods: A retrospective radiographic review of all calcaneal fractures presenting at three institutions from June 30, 2006, to June 30, 2011, was performed.

Functional outcomes after ankle arthrodesis in elderly patients.

Background: Ankle arthrodesis has been the gold standard operative treatment for ankle arthritis refractory to nonoperative treatment. Although multiple studies have evaluated the outcomes after ankle fusion, none has focused on outcomes in elderly patients. The purpose of this study was to evaluate outcomes of ankle fusion in patients over the age of 70.