Asymmetry of the Leg Alignment Affects Trunk Bending in the Coronal Plane After Unilateral Total Knee Arthroplasty

作者：Harato Kengo^*; Yoshida Hiroki; Otani Toshiro

来源：Journal of Arthroplasty, 2013, 28(7): 1089-1093.

DOI：10.1016/j.arth.2012.07.028

• asymmetry
• leg alignment
• unilateral TKA
• bilateral end-stage OA
• radiograph

Unilateral total knee arthroplasty (TKA) would produce asymmetric changes of lower extremity in patients with bilateral varus deformity. Our purpose was to investigate whether asymmetry of the leg alignment would affect trunk bending in the coronal plane after unilateral MA. Twenty patients (mean 76 years old) with bilateral end-stage knee osteoarthritis (OA) participated. Spine images during relaxed standing were obtained on pre- and postoperative day 21. As a result, the shoulder tilted more to the MA side and the pelvis inclined more to the contralateral OA side. These results suggested that the trunk would bend away from the contralateral OA side after unilateral TKA in patients with bilateral end-stage knee OA and varus deformity. Asymmetry of the leg alignment led to asymmetric trunk bending.

• 出版日期2013-8