Robertsson, O.; Borgquist, L.; Knutson, K.; Lewold, S.; Lidgren, L. Use of Unicompartmental Instead of Tricompart-Mental Prostheses for Unicompartmental Arthrosis in the Knee Is a Cost-Effective Alternative: 15,437 Primary Tricompartmental Prostheses Were Compared With 10,624 Primary Medial or Lateral Unicompartmental Prostheses. ActaO 1999, 70, 170-175.