Anastasiadis A, Magnissalis E, Tsakonas A
Department of Orthopaedic Surgery, St. Lukes Hospital, Pylaia, Thessaloniki, Greece.
J Med Eng Technol. 2010 Oct-Nov;34(7-8):448-54. doi: 10.3109/03091902.2010.517898. Epub 2010 Sep 21.
Ligament balancing during total knee arthroplasty (TKA) is a controllable and critical procedure necessary for the longevity of the prosthesis. Intraoperative knowledge of the magnitude and location of tibiofemoral forces, can guide the surgeon to an accurate balancing throughout the operation. We developed a novel sensor device in order to monitor tibiofemoral forces during TKA ligament balancing procedure. The device predicts loads with an error of ± 1.5%, following a linear trend of slope = 0.9933 and R(2) = 0.9987; while the location of load is predicted with a practically acceptable error of ± 0.5 mm. The device was subjected to a surgical validation with in situ application during simulated TKAs on composite and cadaveric knees, with a very satisfactory outcome and no operative time elongation. The device can be a useful intraoperative instrument for accurate TKA ligament balancing procedures based on objective and graphically demonstrated and recorded evidence.
全膝关节置换术（TKA）中的韧带平衡是一个可控且关键的步骤，对假体的长期使用寿命至关重要。术中了解胫股关节力的大小和位置，可引导外科医生在整个手术过程中进行精确的平衡操作。我们开发了一种新型传感器设备，用于在TKA韧带平衡手术过程中监测胫股关节力。该设备预测载荷的误差为±1.5%，遵循斜率为0.9933且R² = 0.9987的线性趋势；而载荷位置的预测误差在实际可接受范围内，为±0.5毫米。该设备在复合膝关节和尸体膝关节的模拟TKA手术中进行了原位应用的手术验证，结果非常令人满意，且未延长手术时间。基于客观且有图形展示和记录的证据，该设备可以成为TKA韧带精确平衡手术中有用的术中器械。
