Validity of a smartphone protractor to measure sagittal parameters in adult spinal deformity.

Background Context: Smartphones have become an integral tool in the daily life of health-care professionals (Franko 2011). Their ease of use and wide availability often make smartphones the first tool surgeons use to perform measurements. This technique has been validated for certain orthopedic pathologies (Shaw 2012; Quek 2014; Milanese 2014; Milani 2014), but never to assess sagittal parameters in adult spinal deformity (ASD).

Esophageal Perforation Following Anterior Cervical Spine Surgery: Case Report and Review of the Literature.

Study Design: Multicenter retrospective case series and review of the literature.

Objective: To determine the rate of esophageal perforations following anterior cervical spine surgery.

Methods: As part of an AOSpine series on rare complications, a retrospective cohort study was conducted among 21 high-volume surgical centers to identify esophageal perforations following anterior cervical spine surgery.

Arthroscopic Approach to Osteochondral Defects, Impingement, and Instability.

Osteochondral defects, impingement, and instability of the ankle are common injuries in athletes. In this article, we review these diagnoses and their treatment options, with a focus on arthroscopic approaches. The treatment options continue to evolve, supported by innovation and outcome studies.

Effects of supplementation on voluntary forage intake, diet digestibility, and animal performance.

A data base was constructed to describe and estimate supplementation effects in nonlactating cattle consuming forage ad libitum. The data base included 66 publications on 126 forages (73 harvested and 53 grazed) and a total of 444 comparisons between a control, unsupplemented treatment and a supplemented treatment. Daily gains were reported for 301 comparisons and voluntary intake for 258.