Outcomes of Humerus Nonunion Surgery in Patients With Initial Operative Fracture Fixation.

Objectives: To describe outcomes following humerus aseptic nonunion surgery in patients whose initial fracture was treated operatively and to identify risk factors for nonunion surgery failure in the same population.

Design: Retrospective case series.

Setting: Eight, academic, level 1 trauma centers.

Adaptation of the Centers for Disease Control Surgical Wound Classification System for Orthopaedic Trauma Surgery.

Objectives: To evaluate a proposed orthopaedic-specific surgical wound classification system (SWCS) and the current Centers for Disease Control (CDC) system in a series of detailed clinical vignettes and to identify the degree of satisfaction with CDC SWCS and desire for institution of an orthopaedic-specific SWCS.

Methods: Forty-five clinical vignettes and a 5-question survey were distributed to current and past members of the Orthopaedic Trauma Association's Classification Committee. Respondents were asked to provide wound class for each vignette using the CDC system and orthopaedic-specific SWCS.

Robotically Simulated Pivot Shift That Represents the Clinical Exam.

A thorough understanding of anterior cruciate ligament (ACL) function and the effects of surgical interventions on knee biomechanics requires robust technologies and simulation paradigms that align with clinical insight. In vitro orthopedic biomechanical testing for the elucidation of ACL integrity doesn't have an established testing paradigm to simulate the clinical pivot shift exam on cadaveric specimens. The study aim was to develop a robotically simulated pivot shift that represents the clinical exam.

Transcription-coupled repair of UV damage in the halophilic archaea.

Transcription-coupled repair (TCR) is a subpathway of nucleotide excision repair (NER) in which excision repair proteins are targeted to RNA polymerase-arresting lesions located in the transcribed strand of active genes. TCR has been documented in a variety of bacterial and eukaryotic organisms but has yet to be observed in the Archaea. We used Halobacterium sp.