Immediate Postoperative Ultrasound Assessment of Quadriceps Muscle and Femoral Nerve Morphology After Total Knee Arthroplasty: A Methodological Feasibility Study

Robot‐assisted total knee arthroplasty (rTKA) has been introduced to improve surgical accuracy, but its effects on periarticular soft tissues in the early postoperative period remain insufficiently described. Ultrasound imaging allows non‐invasive assessment of muscle and nerve morphology after surgery. The primary objective of this exploratory case series was to demonstrate the feasibility of early postoperative ultrasound assessment and to describe quadriceps muscle and femoral nerve morphological findings, thereby providing a methodological framework for future longitudinal studies.