Robertson D D, Armfield D R, Towers J D, Irrgang J J, Maloney W J, Harner C D
University of Pittsburgh, Pittsburgh, PA, USA.
J Bone Joint Surg Br. 2009 Feb;91(2):190-5. doi: 10.1302/0301-620X.91B2.21097.
We describe injuries to the posterior root of the medial meniscus in patients with spontaneous osteonecrosis of the medial compartment of the knee. We identified 30 consecutive patients with spontaneous osteonecrosis of the medial femoral condyle. The radiographs and MR imaging were reviewed. We found tears of the posterior root of the medial meniscus in 24 patients (80%). Of these, 15 were complete and nine were partial. Complete tears were associated with > 3 mm of meniscal extrusion. Neither the presence of a root tear nor the volume of the osteonecrotic lesion were associated with age, body mass index (BMI), gender, side affected, or knee alignment. The grade of osteoarthritis was associated with BMI. Although tears of the posterior root of the medial meniscus were frequently present in patients with spontaneous osteonecrosis of the knee, this does not prove cause and effect. Further study is warranted.
我们描述了膝关节内侧间室自发性骨坏死患者内侧半月板后根损伤的情况。我们纳入了30例连续的股骨内侧髁自发性骨坏死患者。回顾了其X线片和磁共振成像（MR）。我们发现24例患者（80%）存在内侧半月板后根撕裂。其中，15例为完全撕裂，9例为部分撕裂。完全撕裂与半月板挤出超过3mm相关。根性撕裂的存在以及骨坏死病变的大小均与年龄、体重指数（BMI）、性别、患侧或膝关节对线无关。骨关节炎的分级与BMI相关。虽然膝关节自发性骨坏死患者经常出现内侧半月板后根撕裂，但这并不能证明存在因果关系。有必要进一步研究。
