Total knee arthroplasty in the treatment of pigmented villonodular synovitis
XU Fu-sheng
QI Wei
LI Huan-yi
KE Rong-jun
GU Yong-fu
LIU Fang-gang
Abstract：Objective To retrospective analyze the efifcacy of total knee arthroplasty ( TKA ) in patients with late-stage pigmented villonodular synovitis ( PVNS ) of the knee.Methods From January 2000 to December 2011, 8 patients of late-stage PVNS were retrospectively reviewed. Six patients were of diffuse type, and 2 of focal type. The mean age was 54.3 years ( range: 34-80 years ). All patients were managed with a complete synovectomy and total knee arthroplasty. Preoperative and postoperative Keen Society Score ( KSS ), prosthetic loosening, infection and recurrence were analyzed.Results All patients were available for an average duration of follow-up 9.2 years ( range: 1.5- 12.5 years ). The average KSS improved from preoperative 39.8 ( range: 25-45 points ) to postoperative 82.3 ( range: 70-90 points ). Average functional score improved from preoperative 35 ( range: 15-55 points ) to postoperative 73.8 ( range: 60-90 points ). Five of the 8 total knee prostheses were well ifxed and functioning satisfactorily. Three patients were of diffuse type and 2 of focal type. Three failures were in patients of diffuse type. One of the failures was due to infection, and 2 were due to the recurrence of the disease. In one of these patients, the recurrence was diagnosed at the time of the revision arthroplasty performed because of aseptic loosening.Conclusions Total knee arthroplasty can achieve well effects in the treatment of late-stage and focal type PVNS. The diffuse type may be related to the prosthetic loosening and infection after the TKA.
Keywords：SynovitisPigmented villonodularArthroplastyReplacementKneeKnee jointJoint diseases
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 276-279 )