固定平台与活动平台单髁置换术对线校正角度的比较
Comparison of Alignment Correction Angles Between Fixed-Bearing and Mobile-Bearing UKA.
作者信息
Inoue Atsuo, Arai Yuji, Nakagawa Shuji, Inoue Hiroaki, Yamazoe Shoichi, Kubo Toshikazu
机构信息
Department of Orthopaedics, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Japan; Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
出版信息
J Arthroplasty. 2016 Jan;31(1):142-5. doi: 10.1016/j.arth.2015.07.024. Epub 2015 Jul 17.
Good outcomes have been reported with both fixed-bearing and mobile-bearing unicompartmental knee arthroplasty (UKA). However, overcorrected alignment could induce the progression of arthritis on the non-arthroplasty side. Changes of limb alignment after UKA with both types of bearings (fixed bearing: 24 knees, mobile bearing: 28 knees) were investigated. The mean difference between the preoperative standing femoral-tibial angle (FTA) and postoperative standing FTA was significantly larger in mobile bearing UKA group. In fixed-bearing UKA, there must be some laxity in MCL tension so that a 2-mm tension gauge can be inserted. In mobile-bearing UKA, appropriate MCL tension is needed to prevent bearing dislocation. This difference in MCL tension may have caused the difference in the correction angle between the groups.
固定平台和活动平台单髁膝关节置换术（UKA）均已报道有良好的治疗效果。然而，过度矫正的对线可能会导致非置换侧关节炎的进展。对两种平台类型（固定平台：24例膝关节，活动平台：28例膝关节）的UKA术后肢体对线变化进行了研究。活动平台UKA组术前站立位股胫角（FTA）与术后站立位FTA的平均差值显著更大。在固定平台UKA中，内侧副韧带（MCL）张力必须有一定松弛度，以便能插入2毫米的张力测量仪。在活动平台UKA中，需要适当的MCL张力以防止平台脱位。MCL张力的这种差异可能导致了两组之间矫正角度的差异。
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