Tibiofemoral joint contact area and biomechanical changes after partial meniscectomy

doi:10.3969/j.issn.2095-4344.2014.24.002

Abstract

Abstract:

BACKGROUND: Biomechanical experiments contribute to elucidate the progressive cartilage lesions following meniscectomy. The causes of articular cartilage degeneration are very complex, including biology, mechanics and structural pathway.
OBJECTIVE: To observe the changes of tibiofemoral joint contact area, pressure and strain after serial meniscectomies of the caudal pole of the medial meniscus.
METHODS: Unpaired pelvic limbs were harvested from eight hybrid adult dogs. All specimens underwent sequential meniscectomy, and the range of resected meniscus in each specimen was calculated as the percentage: a 30% radial width partial meniscectomy, a 75% radial width partial meniscectomy, and a segmental caudal pole hemi-meniscectomy. Biomechanical tests were performed using MTS 858. The difference between groups was compared with statistical analysis using SPSS 18.0 software.
RESULTS AND CONCLUSION: More tissues removed after meniscectomy, more obviously the medial and lateral tibiofemoral joint contact area declined. After a 70% radial width meniscectomy and total meniscectomy, the medial contact area showed no significant difference (P > 0.05); after the total meniscectomy, the lateral contact area was significantly reduced. After a 70% radial width meniscectomy and total meniscectomy, the medial contact pressure was significantly increased, showing significant differences compared with control group (P < 0.05); after the total meniscectomy, the lateral contact pressure was significantly decreased (P < 0.058). A meniscectomy resulted in a decrease in medial meniscal strain, but there was no significant difference between groups. The range of meniscectomy determines the biomechanical function post-operation; as for the meniscus tear, we suggest meniscal suture, to reduce the range of meniscectomy, avoid or delay the degeneration of knee joint.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

全文链接：

Key words: menisci, tibial, biomechanics, pressure, allostasis

CLC Number:

R318

Zhang Yuan-min, Wang Guo-dong, Zhang Yu-ge, Zhao Xiao-wei, Wang Lei, Li Bing-liang, Kong Ying. Tibiofemoral joint contact area and biomechanical changes after partial meniscectomy[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(24): 3779-3784.

Figures/Tables 1

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