Chitranjan S. Ranawat Award: Motion During Total Knee Cementing Significantly Decreases Tibial Implant Fixation Strength.

Background: Aseptic tibial loosening following primary total knee arthroplasty persists despite technique and device-related advancements. The mechanisms for this mode of failure are not well understood. We hypothesized that knee movement while the cement was curing dispersed lipids at the implant-cement interface and would result in decreased tibial fixation strength.

Patient-reported outcomes after above-knee amputation for prosthetic joint infection.

Background: Prosthetic joint infection (PJI) is a challenging complication after total knee arthroplasty (TKA). Above-knee amputation (AKA) is a salvage procedure that may be performed after revision TKAs fail to eradicate PJI. Few studies have investigated patient-reported outcomes.

A Survey of Physicians' Attitudes toward Decision-Making Authority for Initiating and Withdrawing VA-ECMO: Results and Ethical Implications for Shared Decision Making.

Objective: Although patients exercise greater autonomy than in the past, and shared decision making is promoted as the preferred model for doctor-patient engagement, tensions still exist in clinical practice about the primary locus of decision-making authority for complex, scarce, and resource-intensive medical therapies: patients and their surrogates, or physicians. We assessed physicians' attitudes toward decisional authority for adult venoarterial extracorporeal membrane oxygenation (VA-ECMO), hypothesizing they would favor a medical locus.

Design, Setting, Participants: A survey of resident/fellow physicians and internal medicine attendings at an academic medical center, May to August 2013.