Changes in knee alignment after total knee arthroplasty

Shuichi Matsuda, Hiromasa Miura, Ryuji Nagamine, Ken Urabe, Katsumi Harimaya, Tomoya Matsunobu, Yukihide Iwamoto

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Abstract

Changes in limb alignment after total knee arthroplasty were evaluated in 20 knees replaced with the Miller Galante knee system. The mean follow-up period was 87.4 months. Seventeen of the 20 knees were in the varus position on the initial postoperative radiographs, but the alignment significantly changed to become even more aligned toward varus during the follow-up period. The thickness of the ultra-high-molecular-weight polyethylene (UHMWPE) also decreased significantly in the medial femorotibial joint. The wear of the UHMWPE possibly changed the alignment, and the postoperative alignment had a positive correlation with the wear rate. The components should be implanted so that the mechanical axis intersects the center of the components to prevent worsening of alignment as well as to minimize any such wear.

Original languageEnglish
Pages (from-to)566-570
Number of pages5
JournalJournal of Arthroplasty
Volume14
Issue number5
DOIs
Publication statusPublished - Aug 1999

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All Science Journal Classification (ASJC) codes

  • Orthopedics and Sports Medicine

Cite this

Matsuda, S., Miura, H., Nagamine, R., Urabe, K., Harimaya, K., Matsunobu, T., & Iwamoto, Y. (1999). Changes in knee alignment after total knee arthroplasty. Journal of Arthroplasty, 14(5), 566-570. https://doi.org/10.1016/S0883-5403(99)90078-5