Odgaard A, Pedersen C M, Bentzen S M, Jørgensen J, Hvid I
Biomechanics Laboratory, Orthopaedics Hospital, Aarhus, Denmark.
J Orthop Res. 1989;7(5):744-53. doi: 10.1002/jor.1100070517.
Trabecular bone density changes at the proximal tibia were studied after total and partial meniscectomy using quantitative computerized tomography. Thirty-seven medially meniscectomized patients (5- and 10-year follow-up) and 10 control persons were included. In the partially and the totally meniscectomized knees, the area of maximal density in the medial tibial condyle was displaced approximately 4 mm in a posteromedial direction relative to the position in the intact knees. In both partially and totally meniscectomized knees, the density in the region of tibiofemoral contact in the medial tibial condyle was higher compared with the density in the same region in the contralateral intact knees. This difference was of the same order in the 5- and 10-year follow-up groups. The density difference between the meniscectomized and the intact knees in the region of tibiofemoral contact in the medial condyle was significantly higher in totally than in partially meniscectomized patients. It is concluded that not only total but also partial medial meniscectomy is followed by density changes, occurring within the first 5 years after meniscectomy. The results emphasize the importance of the utmost conservatism in surgery on the meniscus.
采用定量计算机断层扫描技术，研究了全半月板切除术和部分半月板切除术后胫骨近端小梁骨密度的变化。研究纳入了37例内侧半月板切除患者（随访5年和10年）和10名对照者。在部分和全半月板切除的膝关节中，内侧胫骨髁最大密度区域相对于完整膝关节的位置向后内侧移位约4毫米。在部分和全半月板切除的膝关节中，内侧胫骨髁胫股接触区域的密度均高于对侧完整膝关节相同区域的密度。在5年和10年随访组中，这种差异程度相同。内侧髁胫股接触区域全半月板切除患者的膝关节与完整膝关节之间的密度差异明显高于部分半月板切除患者。研究得出结论，不仅全半月板切除术，部分内侧半月板切除术之后也会出现密度变化，且这种变化发生在半月板切除术后的前5年内。研究结果强调了半月板手术中采取极度保守态度的重要性。
