Doets, Hendrik C., Bart Th. M. Bierman, and Renée M. v. Soesbergen. 1989. “Synovectomy of the Rheumatoid-Knee Does Not Prevent Deterioration 7-Year Follow-up of 83 Cases”. Acta Orthopaedica 60 (5):523-25. https://doi.org/10.3109/17453678909150115.