Total knee replacement with an accelerometer-based, hand-held navigation system improves knee alignment: reliable in all patients.

Background: Achieving adequate alignment has traditionally been an important goal in total knee arthroplasty to achieve long-term implant survival. While accelerometer-based hand-held navigation systems (ABN) has been introduced as a way to achieve alignment, there is a limited body of evidence on its accuracy, especially in patients under 65 years with differing etiologies for knee arthritis. This study aimed to assess the precision of a specific ABN system in restoring the mechanical axis and report surgical variables and complications, with particular attention to younger patients.

Combined Anteversion Technique for Total Hip Arthroplasty With Handheld Accelerometer-Based Navigation System.

Unlabelled: Aiming for a combined cup and stem anteversion within a target range is one way to assess appropriate prosthetic component orientation and restoration of functional range of motion. We describe a surgical technique that allows the surgeon to assess the combined anteversion using a handheld accelerometer-based navigation system for total hip arthroplasty through a posterior approach. The femur is prepared first, at which time the femoral version is estimated by the surgeon.

Short Course of Oral Antibiotic Treatment After Two-Stage Exchange Arthroplasty Appears to Decrease Early Reinfection.

Background: Recent evidence has suggested a benefit to extended postoperative prophylactic oral antibiotics after two-stage exchange arthroplasty for treatment of periprosthetic joint infections. We sought to determine reinfection rates with and without a short course of oral antibiotics after two-stage exchange procedures.

Methods: A retrospective review identified patients undergoing two-stage exchange arthroplasty for periprosthetic joint infection of the hip or knee.

Incidence of Leg-Length Discrepancy After Index Hinge Total Knee Arthroplasty.

Background: Leg-length discrepancies are not commonly associated with total knee arthroplasty (TKA); however, hinge TKA is a complex form of knee reconstruction where functionality of all knee ligaments is replaced by the TKA construct. The purpose of this study is to evaluate the incidence of leg-length discrepancies after unilateral index hinge TKA and association with patient outcomes.

Methods: A retrospective review was performed of all patients who underwent unilateral index hinge TKA at a single academic institution from 1999 to 2019.

Eye Tracking as a Proxy for Perceptual Evaluation of Repaired Cleft Lip.

Human interactions begin with near-instantaneous visual evaluation of the face, modifying emotional responses and social behavior toward the person. Eye-tracking technology can provide a potential window into how humans undertake this evaluation, and the threshold of whether a face containing a craniofacial difference is perceived as "normal." This study's main questions were whether gaze patterns differ from normal when evaluating children with craniofacial differences, and whether these gaze patterns vary with different levels of craniofacial deformity.