期刊
KNEE
卷 24, 期 1, 页码 107-115出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.knee.2016.09.023
关键词
Radiographs; Alignment; Ankle; Knee; Osteoarthritis; Total knee arthroplasty
资金
- National Natural Science Foundation of China [81372013]
- Research Fund of China Japan Friendship Hospital [2013-MS-27, 2014-4-QN-29]
- China-Japan Friendship Hospital Youth Science and Technology Excellence Project [2014-QNYC-A-06]
Background: There are unanswered questions about knee-ankle alignment after total knee arthroplasty (TKA) for varus and valgus osteoarthritis (OA) of the knee. The aim of this retrospective study was to assess knee-ankle alignment after TKA. Methods: The study consisted of 149 patients who had undergone TKA due to varus and valgus knee OA. The alignment and angles in the selected knees and ankles were measured on full-length standing anteroposterior radiographs, both pre-operatively and post-operatively. The paired t-test and Pearson's correlation tests were used for statistical analysis. Results: The results showed that ankle alignment correlated with knee alignment both preoperatively and postoperatively (P < 0.05). The pre-operative malalignment of the knee was corrected (P < 0.05), and the ankle tilt angle was accordingly improved in the operative side after TKA (P < 0.05). In addition, TKA had little effect on knee-ankle alignment on the non-operative side (P> 0.05). Conclusion: These findings indicated that routine TKA could correct the varus or valgus deformity of a knee, and improve the tilt of the ankle. Ankle alignment correlated with knee alignment both pre-operatively and postoperatively. Both pre-operative knee and anlde malalignment can be simultaneously corrected following TKA. (C) 2016 Elsevier B.V. All rights reserved.
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