Preference Signaling for Orthopaedic Surgery Applicants: A Survey of Residency Program Directors.

INTRODUCTION: On March 30, 2022, the American Orthopaedic Association's Council of Orthopaedic Residency Directors announced its endorsement for a preference signaling program (PSP) for the 2022 to 2023 orthopaedic residency application cycle. The purpose of our study was to assess orthopaedic surgery residency program director (PD) perceptions of the PSP and analyze potential effects of the PSP on the residency application process. METHODS: A 19-question survey was distributed to 98 PDs (40.8% response rate). Contact information was obtained from a national database. RESULTS: Most programs plan to participate in the PSP (87.5%). Preference signaling is highly regarded for residency selection, with PDs ranking its relative importance just below away rotation performance and personal knowledge of the applicant. Most PDs agreed that applicants will have increased chances of receiving interviews at programs they send a preference signal (65%). Most PDs also do not think that the PSP will help improve diversity (42.5%) and combat the overapplication phenomenon (67.5%). A majority think that an application cap limiting the total number of applications submitted should be initiated in future application cycles (85%). CONCLUSION: Preference signaling will be one of the most important factors considered during orthopaedic residency selection. A signal will likely improve applicants' chance of receiving an interview. Thus, students should be selective about where they send their preference signals and invest time in creating strong, personal connections with a few, select programs to increase their success in the orthopaedic residency match.

Malunion of Pediatric Forearm Shaft Fractures: Management Principles and Techniques.

PURPOSE OF REVIEW: Clinically significant malunion of forearm diaphyseal fractures is an uncommon but potentially disabling condition amongst children and adolescents. We present the preoperative evaluation, including imaging, and discuss surgical indications and contemporary approaches to manage such patients, including an illustrative case. RECENT FINDINGS: While advances in three-dimensional (3D) simulation, modeling, and patient-specific instrumentation have expanded the surgical armamentarium, their impact on long-term outcomes compared to traditional methods remains unknown. Successful outcome following surgical correction of malunion following a both-bone forearm fracture can be achieved with careful patient selection, appropriate indications, and a well-planned surgical execution.

Sources of lumbar back pain during aging and potential therapeutic targets.

Lumbar back pain during aging is a major clinical problem, the origins and underlying mechanisms of which are challenging to study. Degenerative changes occur in various parts of the functional spinal unit, such the vertebral endplate and intervertebral disc. The homeostasis of these structural components is regulated by signaling molecules, such as transforming growth factor-ß and parathyroid hormone. Previous efforts to understand sources of lumbar back pain focused on sensory innervation in the degenerative intervertebral disc, but intervertebral disc degeneration is frequently asymptomatic. An in vivo mouse model of lumbar spine aging and degeneration, combined with genetic technology, has identified endplate innervation as a major source of lumbar back pain and a potential therapeutic target. In this review, we consider how each structural component of the functional spinal unit contributes to lumbar back pain, how the homeostasis of each component is regulated, and how these findings can be used to develop potential therapies.