Bröll H, Machacek E
II. Medizinischen Abteilung mit Rheumatologie und Osteologie, Kaiser Franz Josef Spitals der Stadt Wien.
Acta Med Austriaca. 1988;15(5):135-6.
In patients with rheumatoid arthritis according to the criteria of the American Rheumatism Association (ARA) (4) the head of the femur was resected during reconstructive hip joint operation. The area of increased radiological translucence near to the joint space was histologically investigated. The rarefication of the trabecula was found distal of the articular cartilage. In this radiologically translucent area numerous osteoclasts and inflammatory cells could be found.
根据美国风湿病协会（ARA）标准（4）诊断为类风湿性关节炎的患者，在髋关节重建手术中切除了股骨头。对关节间隙附近放射透亮度增加的区域进行了组织学研究。在关节软骨远端发现小梁稀疏。在这个放射学半透明区域发现了大量破骨细胞和炎性细胞。
