Prosthetic matching of knee valgus for total knee arthroplasty: three-dimensional digital measurement and analysis

doi:10.3969/j.issn.2095-4344.2015.17.026

Abstract

Abstract:

BACKGROUND: Knee valgus deformity often needs total knee arthroplasty. The choice of prosthesis in total knee arthroplasty significantly affects the long-term effects. The currently used prosthesis is designed based on the data of western countries, which cannot well match with Chinese data.

OBJECTIVE: To observe the abnormality of anatomical morphology of the femoral condyle and tibial plateau, and provide anatomical data for total knee arthroplasty in treatment of knee valgus deformity.

METHODS: 41 adult patients (53 knees) with knee valgus deformity were detected with CT scan, the obtained images were imported into Mimics 10.01 software, and digital three-dimensional model was established. The anatomical parameters were measured, and the distribution and correlation were analyzed. The knee joint parameters between knee valgus deformity patients and healthy normal knee in single deformity patients (control group, n=29) were compared

RESULTS AND CONCLUSION: X-ray findings showed that, tibiofemoral angle of knee valgus was (15.4±5.1)°, anatomical lateral distal femoral angle at coronal plane (76.6±1.2)° was decreased, and anatomical medial posterior tibia angle (95.8±0.5)° was increased. CT findings showed that, the distal condylar angle (6.5±1.3)° was increased, the poster condylar angle (5.2±1.2)° was also increased. There were significant differences compared with the control group (P < 0.05). In the total knee arthroplasty of knee valgus deformity, anatomical abnormality of femoral condyle and tibial plateau should be noted.

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: Knee Valgus, Arthroplasty, Replacement, Knee, Imaging, Three-dimensional, Anatomy

CLC Number:

R318

Yuan Jing, Zhen Ping, Song Yan-feng, Wang De-gui, Gao Ming-xuan, Li Sheng-gui. Prosthetic matching of knee valgus for total knee arthroplasty: three-dimensional digital measurement and analysis[J]. Chinese Journal of Tissue Engineering Research, 2015, 19(17): 2768-2774.

Figures/Tables 1

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