Fahmy N R, Wroblewski B M
Acta Orthop Scand. 1982 Oct;53(5):799-802. doi: 10.3109/17453678208992296.
In 23 hips with a Charnley Low Friction Arthroplasty (L.F.A.), revised for mechanical reasons, a planimeter was used to study areas of ectopic ossification and their recurrence after excision. In two cases some bone resorption had taken place. In the remaining 21 hips the average area of recurrence was greater than the average area excised. There was no correlation between the time elapsed and the extent of ossification; once established, the ossification did not seem to progress. Revision of L.F.A. for excision of ectopic bone is not indicated.
在23例行Charnley低摩擦关节成形术（L.F.A.）且因机械原因进行翻修的髋关节中，使用面积计研究异位骨化区域及其切除后的复发情况。2例出现了一定程度的骨质吸收。在其余21例髋关节中，复发的平均面积大于切除的平均面积。时间流逝与骨化程度之间无相关性；一旦形成，骨化似乎不再进展。不建议因切除异位骨而对L.F.A.进行翻修。
