Rater Variation in Ultrasound Detection of Dorsal Cortex Screw Protrusion in Fixed-Angle Volar Plating of the Distal Radius.

This study evaluates rater accuracy and variation for the purpose of using intraoperative ultrasound (US) imaging to detect dorsal screw protrusion during fixed-angle volar plating of distal radius fractures. Stabilizing volar plates and screws with varying lengths of dorsal protrusion were applied to 10 cadaver wrist pairs. After a brief training session, seven surgeons without prior ultrasound experience assessed screw protrusion on two separate occasions using a diagnostic ultrasound machine.

Computed Tomography Analysis of Postsurgery Femoral Component Rotation Based on a Force Sensing Device Method versus Hypothetical Rotational Alignment Based on Anatomical Landmark Methods: A Pilot Study.

Rotation of the femoral component is an important aspect of knee arthroplasty, due to its effects on postsurgery knee kinematics and associated functional outcomes. It is still debated which method for establishing rotational alignment is preferable in orthopedic surgery. We compared force sensing based femoral component rotation with traditional anatomic landmark methods to investigate which method is more accurate in terms of alignment to the true transepicondylar axis.

Electronic measurement of soft-tissue balancing reduces lateral releases in total knee arthroplasty.

Soft tissue balancing during total knee arthroplasty (TKA) has a direct affect on patello-femoral tracking and knee range of motion, which are necessary for a well functioning TKA postoperatively. We report on the use of an electronic pressure sensing instrument for soft tissue balancing of the knee before completion of all intraoperative bone cuts, as a way to improve patellar tracking. In a retrospective study of 99 consecutive TKAs, with intraoperative electronic instrument guided soft tissue balancing performed, a reduction in the incidence of lateral patellar retinacular release was found, as compared with the 100 consecutive TKAs prior to its use (5.