Department of Orthopaedics and Traumatology, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong.
Hong Kong Med J. 2011 Feb;17(1):20-5.
To review the epidemiology of total knee arthroplasty for primary osteoarthritis and the change of patient characteristics over the last decade.
Retrospective review.
A tertiary referral centre for joint replacement surgery in a teaching hospital in Hong Kong.
All patients who underwent primary total knee arthroplasty for primary knee osteoarthritis from January 2000 to December 2009.
In all, 1157 total knee arthroplasties (589 left and 568 right) were performed on 588 females and 162 males. The annual number of total knee arthroplasties increased from 91 in 2000 to 181 in 2009. The annual number of patients increased from 58 (46 female, 12 male) in 2000 to 159 (117 female, 42 male) in 2009. When compared yearly results, there were no significant changes in the preoperative Knee Society Knee Score, Knee Society Functional Assessment, and passive range of motion of these patients. However, there was a significant decreasing trend with regard to lower limb mechanical axis mal-alignment, from 15.1° deviation from the neutral axis in 2000, to 14.8° deviation in 2004, and then 12.9° deviation in 2009 (mostly varus deformity). There was no difference between left knees and right knees, and between females and males. The mean age of the patients did not show significant change over the past decade, but the number and proportion of patients over 80 years old showed an increase from 4.8% (2000 to 2004) to 13.8% (2005 to 2009). On the other hand, the number and proportion of patients under the age of 60 years did not change.
There was an increasing trend towards total knee arthroplasties, both in terms of number of operations and patients. The number of younger patients having total knee arthroplasty did not increase over the last 10 years, whereas the number of those older than 80 years increased significantly over that period.
回顾原发性骨关节炎全膝关节置换术的流行病学情况，以及过去十年间患者特征的变化。
回顾性研究。
香港一所教学医院的关节置换手术三级转诊中心。
2000 年 1 月至 2009 年 12 月期间，所有因原发性膝关节骨关节炎接受初次全膝关节置换术的患者。
共对 588 名女性和 162 名男性的 1157 例（589 例左侧和 568 例右侧）全膝关节置换术进行了研究。全膝关节置换术的年手术量从 2000 年的 91 例增加到 2009 年的 181 例。患者的年手术量从 2000 年的 58 例（46 例女性，12 例男性）增加到 2009 年的 159 例（117 例女性，42 例男性）。对每年的结果进行比较时，这些患者的术前膝关节协会膝关节评分、膝关节协会功能评估和被动活动范围均无显著变化。然而，下肢机械轴对线不良的情况呈显著下降趋势，从 2000 年的偏离中立轴 15.1°，到 2004 年的 14.8°，再到 2009 年的 12.9°（多为内翻畸形）。左右膝关节之间、男女之间均无差异。过去十年间，患者的平均年龄无显著变化，但 80 岁以上患者的数量和比例从 4.8%（2000 年至 2004 年）增加到 13.8%（2005 年至 2009 年）。另一方面，60 岁以下患者的数量和比例没有变化。
在手术数量和患者数量方面，全膝关节置换术均呈上升趋势。过去 10 年，年轻患者接受全膝关节置换术的数量没有增加，而 80 岁以上患者的数量显著增加。
