Kim Sungmin, Ryu Changhyun, Jung Sung-Taek
Department of Orthopedic Surgery, Chonnam National University Medical School and Hospital, 42 Jebong-ro, Dong-gu, Gwangju 61469, Korea.
J Clin Med. 2021 Sep 10;10(18):4100. doi: 10.3390/jcm10184100.
Modular endoprostheses are frequently used to reconstruct skeletal and knee defects from bone tumor resection and preserve joint function in patients with bone tumors around the knee. Depending on the tumor location, the muscles and extent of the tumor can vary, which can affect gait function. This study aimed to analyze kinetic and kinematic characteristics according to tumor location in patients with endoprosthetic knee replacements after bone tumor resection. Gait analyses were performed in 16 patients who underwent knee endoprosthesis due to tumors around the knee. We divided the patients into distal femur ( = 7) and proximal tibia ( = 9) groups and conducted between-group comparisons and comparisons with healthy participants. Compared with the control group, the distal femur group showed a tendency for knee extension, and the proximal tibia group showed increased maximal dorsiflexion during stance. The proximal tibia group maintained a flexed hip during the entire gait cycle, compared with the distal femur group. In summary, our results suggest a difference in gait between the distal femur and proximal tibia groups. Patients who have undergone knee prosthesis after knee tumor resection may require different rehabilitation strategies according to the tumor location.
模块化内置假体常用于重建因骨肿瘤切除造成的骨骼和膝关节缺损，并保留膝关节周围骨肿瘤患者的关节功能。根据肿瘤位置的不同，肿瘤累及的肌肉和范围会有所差异，进而可能影响步态功能。本研究旨在分析骨肿瘤切除术后接受膝关节置换术的患者，根据肿瘤位置的不同所呈现的动力学和运动学特征。对16例因膝关节周围肿瘤接受膝关节假体植入术的患者进行了步态分析。我们将患者分为股骨远端组（n = 7）和胫骨近端组（n = 9），并进行组间比较以及与健康参与者的比较。与对照组相比，股骨远端组表现出膝关节伸展的趋势，而胫骨近端组在站立期最大背屈增加。与股骨远端组相比，胫骨近端组在整个步态周期中保持髋关节屈曲。总之，我们的结果表明股骨远端组和胫骨近端组在步态上存在差异。膝关节肿瘤切除术后接受膝关节假体植入的患者可能需要根据肿瘤位置采取不同的康复策略。
