Rader C P, Barthel T, Haase M, Scheidler M, Eulert J
Orthopedic Department, University of Würzburg, Germany.
Acta Orthop Scand. 1997 Feb;68(1):46-50. doi: 10.3109/17453679709003974.
We found heterotopic ossifications in 54 (9%) of 615 cases after total knee arthroplasty. The largest ossifications were located in the anterior distal femur. In 12 cases smaller ossifications were found in other knee regions. The development of heterotopic ossification showed a positive correlation with hypertrophic arthrosis and a negative correlation with rheumatoid arthritis. We propose a new 3-grade classification which refers only to the anterior distal femoral region. Grade III heterotopic ossifications occurred in 4 patients (4 knees) who had clinical symptoms; 2 were successfully reoperated with removal of the ossifications. Prophylaxis should be considered in patients with marked hypertrophic arthrosis or marked periosteal damage to the anterior distal femur.
我们在615例全膝关节置换术后的病例中发现54例（9%）出现异位骨化。最大的骨化位于股骨远端前方。12例在膝关节其他区域发现较小的骨化。异位骨化的发生与肥厚性关节炎呈正相关，与类风湿关节炎呈负相关。我们提出一种仅针对股骨远端前方区域的新的三级分类法。4例（4膝）有临床症状的患者出现III级异位骨化；2例成功进行了再次手术切除骨化。对于有明显肥厚性关节炎或股骨远端前方明显骨膜损伤的患者应考虑预防措施。
