Total knee arthroplasty without patellar resurfacing for degenerative osteoarthritis: effects of patellar chondromalacia on clinical outcomes

doi:10.3969/j.issn.2095-4344.2014.31.004

Abstract

Abstract:

BACKGROUND: There remains controversy that whether patellar resurfacing in total knee arthroplasty and whether patellar chondromalacia has influence on clinical outcomes.
OBJECTIVE: To evaluate anterior knee pain, clinical function and effects of patellar chondromalacia on clinical outcomes after total knee arthroplasty without patellar resurfacing for degenerative osteoarthritis.
METHODS: Clinical data of 162 patients (162 knees) with degenerative osteoarthritis undergoing total knee arthroplasty without patellar resurfacing from June 2008 to February 2010 were retrospectively analyzed. Outerbridge classification was used for patellar chondromalacia, Visual Analogue Scale for anterior knee pain, and the Knee Society clinical scoring system for clinical function.
RESULTS AND CONCLUSION: The incision of all patients reached stage-I healing. The patellar chondromalacia: grade I in 18 patients, grade II in 36 patients, grade III in 62 patients, and grade IV in 35 patients. At the final follow-up, there were six (4.0%) patients with anterior knee pain, including four cases of mild pain and two cases of moderate pain, no severe pain. The mean Knee Society clinical scoring system scores and patellar score were obviously elevated. Outerbridge classification did not affect the incidence of anterior knee pain after replacement (χ2=0.42, P=0.94), the Knee Society clinical scoring system score (knee score: F=1.83, P=0.14; functional score: F=0.56, P=0.64) and partellar score (F=0.78, P=0.51). These data suggested that total knee arthroplasty without patellar resurfacing for degenerative osteoarthritis can obtain satisfactory clinical outcomes, and the patellar chondromalacia may not affect the clinical outcomes.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

全文链接：

Key words: patella, knee joint, knee prosthesis, arthroplasty, replacement

CLC Number:

R318

Xu Chao, Hou Yan-jie, Yilihamu•Tuoheti, Guan Zhen-peng, Li Shan-zhu1, Wang Xin . Total knee arthroplasty without patellar resurfacing for degenerative osteoarthritis: effects of patellar chondromalacia on clinical outcomes[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(31): 4939-4943.

Figures/Tables 3

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